Zildžović, Snežana

Link to this page

Authority KeyName Variants
orcid::0000-0002-0214-8119
  • Zildžović, Snežana (38)
Projects
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200023 (Institute of Technology of Nuclear and Other Mineral Row Materials - ITNMS, Belgrade) Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200135 (University of Belgrade, Faculty of Technology and Metallurgy)
The development of glasses with controlled ions release for application in agriculture and medicine Phenomena and processes of the synthesis of new glassy and nano-structured glass-ceramics materials
Simultaneous Bioremediation and Soilification of Degraded Areas to Preserve Natural Resources of Biologically Active Substances, and Development and Production of Biomaterials and Dietetic Products Development of technologies and products based on mineral raw materials and waste biomass for protection of natural resources for safe food production
FP7 project FCUB ERA Oxide-based environmentally-friendly porous materials for genotoxic substances removal
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200168 (University of Belgrade, Faculty of Chemistry)
Fizičko-hemijski fenomeni površina alumosilikatnih minerala - osnova za razvoj novih ekoloških materijala Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection
Development of technological processes for obtaining of ecological materials based on nonmetallic minerals

Author's Bibliography

The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass

Matijašević, Srđan; Topalović, Vladimir; Savić, Veljko; Labus, Nebojša; Nikolić, Jelena; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Association for ETRAN Society, 2023)

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Labus, Nebojša
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/1221
AB  - The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established 
temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the 
chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined 
experimentally and theoretically.
PB  - Belgrade : Association for ETRAN Society
T2  - Science of Sintering
T1  - The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass
EP  - 547
IS  - 4
SP  - 539
VL  - 55
DO  - 10.2298/SOS220809022M
ER  - 
@article{
author = "Matijašević, Srđan and Topalović, Vladimir and Savić, Veljko and Labus, Nebojša and Nikolić, Jelena and Zildžović, Snežana and Grujić, Snežana",
year = "2023",
abstract = "The crystal growth rate of LiGe2(PO4)3 phase from lithium germanium-phosphate glass was studied. The glass have been homogenized using the previously established 
temperature-time conditions, which make it possible to remove volatile substances from the glass melt. The atomic absorption spectrophotometry (AAS) was used to determine the 
chemical content of the obtained glass and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth. The crystal growth rates were determined 
experimentally and theoretically.",
publisher = "Belgrade : Association for ETRAN Society",
journal = "Science of Sintering",
title = "The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass",
pages = "547-539",
number = "4",
volume = "55",
doi = "10.2298/SOS220809022M"
}
Matijašević, S., Topalović, V., Savić, V., Labus, N., Nikolić, J., Zildžović, S.,& Grujić, S.. (2023). The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass. in Science of Sintering
Belgrade : Association for ETRAN Society., 55(4), 539-547.
https://doi.org/10.2298/SOS220809022M
Matijašević S, Topalović V, Savić V, Labus N, Nikolić J, Zildžović S, Grujić S. The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass. in Science of Sintering. 2023;55(4):539-547.
doi:10.2298/SOS220809022M .
Matijašević, Srđan, Topalović, Vladimir, Savić, Veljko, Labus, Nebojša, Nikolić, Jelena, Zildžović, Snežana, Grujić, Snežana, "The Crystal Growth of NASICON Phase from the Lithium Germanium Phosphate Glass" in Science of Sintering, 55, no. 4 (2023):539-547,
https://doi.org/10.2298/SOS220809022M . .

Nanocrystallization of potassium niobium germanate glasses

Matijašević, Srđan; Grujić, Snežana; Topalović, Vladimir; Stojanović, Jovica; Nikolić, Jelena; Savić, Veljko; Zildžović, Snežana

(University of Belgrade, Technical Faculty in Bor, 2023)

TY  - CONF
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Topalović, Vladimir
AU  - Stojanović, Jovica
AU  - Nikolić, Jelena
AU  - Savić, Veljko
AU  - Zildžović, Snežana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/671
AB  - This paper presents the effect of K2O content on phase composition of the nanocrystallized niobium germanate glasses. It was shown that the exothermal peak temperature, Tp, shifted toward the higher temperatures with increasing content of K2O. Such increase of K2O content causes a decrease of GeO2 content in the primary phases. The crystals below 100 nm were detected in the samples.
PB  - University of Belgrade, Technical Faculty in Bor
C3  - XV International Mineral Processing and Recycling Conference-IMPRC 2023
T1  - Nanocrystallization of potassium niobium germanate glasses
EP  - 337
SP  - 333
ER  - 
@conference{
author = "Matijašević, Srđan and Grujić, Snežana and Topalović, Vladimir and Stojanović, Jovica and Nikolić, Jelena and Savić, Veljko and Zildžović, Snežana",
year = "2023",
abstract = "This paper presents the effect of K2O content on phase composition of the nanocrystallized niobium germanate glasses. It was shown that the exothermal peak temperature, Tp, shifted toward the higher temperatures with increasing content of K2O. Such increase of K2O content causes a decrease of GeO2 content in the primary phases. The crystals below 100 nm were detected in the samples.",
publisher = "University of Belgrade, Technical Faculty in Bor",
journal = "XV International Mineral Processing and Recycling Conference-IMPRC 2023",
title = "Nanocrystallization of potassium niobium germanate glasses",
pages = "337-333"
}
Matijašević, S., Grujić, S., Topalović, V., Stojanović, J., Nikolić, J., Savić, V.,& Zildžović, S.. (2023). Nanocrystallization of potassium niobium germanate glasses. in XV International Mineral Processing and Recycling Conference-IMPRC 2023
University of Belgrade, Technical Faculty in Bor., 333-337.
Matijašević S, Grujić S, Topalović V, Stojanović J, Nikolić J, Savić V, Zildžović S. Nanocrystallization of potassium niobium germanate glasses. in XV International Mineral Processing and Recycling Conference-IMPRC 2023. 2023;:333-337..
Matijašević, Srđan, Grujić, Snežana, Topalović, Vladimir, Stojanović, Jovica, Nikolić, Jelena, Savić, Veljko, Zildžović, Snežana, "Nanocrystallization of potassium niobium germanate glasses" in XV International Mineral Processing and Recycling Conference-IMPRC 2023 (2023):333-337.

Crystallization characteristics of bioactive polyphosphate glasses

Topalović, Vladimir; Matijašević, Srđan; Savić, Veljko; Nikolić, Jelena; Stojanović, Jovica; Zildžović, Snežana; Grujić, Snežana

(Bor : University of Belgrade, Technical Faculty in Bor, 2023)

TY  - CONF
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Savić, Veljko
AU  - Nikolić, Jelena
AU  - Stojanović, Jovica
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/685
AB  - The essence of this paper is to present the effect of adding TiO2 and SrO to the crystallization characteristics of polyphosphate glasses. The crystallization of glasses has been studied by using DTA, HSM and XRD methods. Sintered phosphate glass-ceramics containing bioactive β-CaP2O6 and β-Ca3(PO4)2 phases were successfully prepared. The increasing presence of Sr (1-5 %), as well as Ti at the expense of phosphate mole fraction in polyphosphate bioactive glass increases the density of these glasses, transformation temperature and resistance to crystallization.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - 30th International Conference Ecological Truth & Environmental Research – EcoTER’23
T1  - Crystallization characteristics of bioactive polyphosphate glasses
EP  - 604
SP  - 599
ER  - 
@conference{
author = "Topalović, Vladimir and Matijašević, Srđan and Savić, Veljko and Nikolić, Jelena and Stojanović, Jovica and Zildžović, Snežana and Grujić, Snežana",
year = "2023",
abstract = "The essence of this paper is to present the effect of adding TiO2 and SrO to the crystallization characteristics of polyphosphate glasses. The crystallization of glasses has been studied by using DTA, HSM and XRD methods. Sintered phosphate glass-ceramics containing bioactive β-CaP2O6 and β-Ca3(PO4)2 phases were successfully prepared. The increasing presence of Sr (1-5 %), as well as Ti at the expense of phosphate mole fraction in polyphosphate bioactive glass increases the density of these glasses, transformation temperature and resistance to crystallization.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "30th International Conference Ecological Truth & Environmental Research – EcoTER’23",
title = "Crystallization characteristics of bioactive polyphosphate glasses",
pages = "604-599"
}
Topalović, V., Matijašević, S., Savić, V., Nikolić, J., Stojanović, J., Zildžović, S.,& Grujić, S.. (2023). Crystallization characteristics of bioactive polyphosphate glasses. in 30th International Conference Ecological Truth & Environmental Research – EcoTER’23
Bor : University of Belgrade, Technical Faculty in Bor., 599-604.
Topalović V, Matijašević S, Savić V, Nikolić J, Stojanović J, Zildžović S, Grujić S. Crystallization characteristics of bioactive polyphosphate glasses. in 30th International Conference Ecological Truth & Environmental Research – EcoTER’23. 2023;:599-604..
Topalović, Vladimir, Matijašević, Srđan, Savić, Veljko, Nikolić, Jelena, Stojanović, Jovica, Zildžović, Snežana, Grujić, Snežana, "Crystallization characteristics of bioactive polyphosphate glasses" in 30th International Conference Ecological Truth & Environmental Research – EcoTER’23 (2023):599-604.

Recycling of glass waste into foam glass: A review

Savić, Veljko; Topalović, Vladimir; Nikolić, Jelena; Matijašević, Srđan; Đošić, Marija; Zildžović, Snežana; Grujić, Snežana

(Belgrade : University of Belgrade, Faculty of Mining and Geology, 2023)

TY  - CONF
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Đošić, Marija
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2023
UR  - https://ritnms.itnms.ac.rs/handle/123456789/784
AB  - Waste glass can be transformed into a foam by addition of suitable substance (foaming agent) which generated gaseous products by decomposition or reaction at temperatures above its softening temperature (corresponding to a viscosity of 106.6 Pas). This paper provides a concise overview of the latest research in the field of improving the glass foam production process. Some of the possibilities for reducing the environmental impact of glass foam production are also presented. Some of the new production techniques, new foaming agents as well as the possibility of including other solid waste in the composition of glass foams are presented. At the end, the glass foam produced in the Laboratory for glass and ceramics, Institute for Technology of Nuclear and other Mineral Raw Materials, was shown.
PB  - Belgrade : University of Belgrade, Faculty of Mining and Geology
C3  - 9th International Conference Mining and Environmental Protection MEP-23
T1  - Recycling of glass waste into foam glass: A review
EP  - 272
SP  - 267
ER  - 
@conference{
author = "Savić, Veljko and Topalović, Vladimir and Nikolić, Jelena and Matijašević, Srđan and Đošić, Marija and Zildžović, Snežana and Grujić, Snežana",
year = "2023",
abstract = "Waste glass can be transformed into a foam by addition of suitable substance (foaming agent) which generated gaseous products by decomposition or reaction at temperatures above its softening temperature (corresponding to a viscosity of 106.6 Pas). This paper provides a concise overview of the latest research in the field of improving the glass foam production process. Some of the possibilities for reducing the environmental impact of glass foam production are also presented. Some of the new production techniques, new foaming agents as well as the possibility of including other solid waste in the composition of glass foams are presented. At the end, the glass foam produced in the Laboratory for glass and ceramics, Institute for Technology of Nuclear and other Mineral Raw Materials, was shown.",
publisher = "Belgrade : University of Belgrade, Faculty of Mining and Geology",
journal = "9th International Conference Mining and Environmental Protection MEP-23",
title = "Recycling of glass waste into foam glass: A review",
pages = "272-267"
}
Savić, V., Topalović, V., Nikolić, J., Matijašević, S., Đošić, M., Zildžović, S.,& Grujić, S.. (2023). Recycling of glass waste into foam glass: A review. in 9th International Conference Mining and Environmental Protection MEP-23
Belgrade : University of Belgrade, Faculty of Mining and Geology., 267-272.
Savić V, Topalović V, Nikolić J, Matijašević S, Đošić M, Zildžović S, Grujić S. Recycling of glass waste into foam glass: A review. in 9th International Conference Mining and Environmental Protection MEP-23. 2023;:267-272..
Savić, Veljko, Topalović, Vladimir, Nikolić, Jelena, Matijašević, Srđan, Đošić, Marija, Zildžović, Snežana, Grujić, Snežana, "Recycling of glass waste into foam glass: A review" in 9th International Conference Mining and Environmental Protection MEP-23 (2023):267-272.

Complex crystallization of the potassium-niobium-germanate system

Matijašević, Srđan; Savić, Veljko; Topalović, Vladimir; Stojanović, Jovica; Nikolić, Jelena; Zildžović, Snežana; Grujić, Snežana

(Bor : Mining and Metallurgy Institute Bor, 2022)

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Stojanović, Jovica
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/780
AB  - Potassium germanate glass with the molar ratio 30K2O·34Nb2O·36GeO2 have been synthesized by the standard melt-quenching method. The crystallization behavior under the non-isothermal crystallization conditions was investigated by the DTA and XRD methods. The results showed that this glass exposed a complex primary crystallization.
PB  - Bor : Mining and Metallurgy Institute Bor
T2  - 53rd International October Conference on Mining and Metallurgy IOC 2022
T1  - Complex crystallization of the potassium-niobium-germanate system
EP  - 100
SP  - 97
ER  - 
@article{
author = "Matijašević, Srđan and Savić, Veljko and Topalović, Vladimir and Stojanović, Jovica and Nikolić, Jelena and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "Potassium germanate glass with the molar ratio 30K2O·34Nb2O·36GeO2 have been synthesized by the standard melt-quenching method. The crystallization behavior under the non-isothermal crystallization conditions was investigated by the DTA and XRD methods. The results showed that this glass exposed a complex primary crystallization.",
publisher = "Bor : Mining and Metallurgy Institute Bor",
journal = "53rd International October Conference on Mining and Metallurgy IOC 2022",
title = "Complex crystallization of the potassium-niobium-germanate system",
pages = "100-97"
}
Matijašević, S., Savić, V., Topalović, V., Stojanović, J., Nikolić, J., Zildžović, S.,& Grujić, S.. (2022). Complex crystallization of the potassium-niobium-germanate system. in 53rd International October Conference on Mining and Metallurgy IOC 2022
Bor : Mining and Metallurgy Institute Bor., 97-100.
Matijašević S, Savić V, Topalović V, Stojanović J, Nikolić J, Zildžović S, Grujić S. Complex crystallization of the potassium-niobium-germanate system. in 53rd International October Conference on Mining and Metallurgy IOC 2022. 2022;:97-100..
Matijašević, Srđan, Savić, Veljko, Topalović, Vladimir, Stojanović, Jovica, Nikolić, Jelena, Zildžović, Snežana, Grujić, Snežana, "Complex crystallization of the potassium-niobium-germanate system" in 53rd International October Conference on Mining and Metallurgy IOC 2022 (2022):97-100.

The analysis of the crystal growth process of the lithium germanium phosphate glass

Matijašević, Srđan; Topalović, Vladimir; Savić, Veljko; Labus, Nebojsa; Nikolić, Jelena; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Serbian Ceramic Society, 2022)

TY  - CONF
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Labus, Nebojsa
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/802
AB  - The crystal growth rate of lithium germanium-phosphate glass was studied. The glasses have been homogenized using the previously established temperature-time conditions, which make it possible to remove a volatile substances from the glass melt. The AAS was used to determine the chemical content of obtained glass, the differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth, respectively. It has been found that the experimental determined crystal growth rate has a tendency toward of exponentially increase with an increase the temperature.
PB  - Belgrade : Serbian Ceramic Society
C3  - Serbian Ceramic Society Conference-Advance Ceramics and Application X-New Frontiers in Multifunctional Material Science and Processing
T1  - The analysis of the crystal growth process of the lithium germanium phosphate glass
EP  - 42
SP  - 42
ER  - 
@conference{
author = "Matijašević, Srđan and Topalović, Vladimir and Savić, Veljko and Labus, Nebojsa and Nikolić, Jelena and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "The crystal growth rate of lithium germanium-phosphate glass was studied. The glasses have been homogenized using the previously established temperature-time conditions, which make it possible to remove a volatile substances from the glass melt. The AAS was used to determine the chemical content of obtained glass, the differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the isothermal process of crystal growth, respectively. It has been found that the experimental determined crystal growth rate has a tendency toward of exponentially increase with an increase the temperature.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Serbian Ceramic Society Conference-Advance Ceramics and Application X-New Frontiers in Multifunctional Material Science and Processing",
title = "The analysis of the crystal growth process of the lithium germanium phosphate glass",
pages = "42-42"
}
Matijašević, S., Topalović, V., Savić, V., Labus, N., Nikolić, J., Zildžović, S.,& Grujić, S.. (2022). The analysis of the crystal growth process of the lithium germanium phosphate glass. in Serbian Ceramic Society Conference-Advance Ceramics and Application X-New Frontiers in Multifunctional Material Science and Processing
Belgrade : Serbian Ceramic Society., 42-42.
Matijašević S, Topalović V, Savić V, Labus N, Nikolić J, Zildžović S, Grujić S. The analysis of the crystal growth process of the lithium germanium phosphate glass. in Serbian Ceramic Society Conference-Advance Ceramics and Application X-New Frontiers in Multifunctional Material Science and Processing. 2022;:42-42..
Matijašević, Srđan, Topalović, Vladimir, Savić, Veljko, Labus, Nebojsa, Nikolić, Jelena, Zildžović, Snežana, Grujić, Snežana, "The analysis of the crystal growth process of the lithium germanium phosphate glass" in Serbian Ceramic Society Conference-Advance Ceramics and Application X-New Frontiers in Multifunctional Material Science and Processing (2022):42-42.

Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review

Topalović, Vladimir; Nikolić, Jelena; Savić, Veljko; Matijašević, Srđan; Đošić, Marija; Zildžović, Snežana; Grujić, Snežana

(Banja Luka : University in Banja Luka, Faculty of Technology, 2022)

TY  - CONF
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Savić, Veljko
AU  - Matijašević, Srđan
AU  - Đošić, Marija
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/800
AB  - Global trends are moving towards a circular economy to replace the deeply grounded one linear economics and waste management. Circular economy implies and the protection of human rights through sustainable development, global security natural resources, combating climate change, energy security, insurance sufficient amounts of food, reducing inequalities, preservation of health and a cleaner environment and the rights of future generations to resources, etc. The policy of procurement of raw materials in the circular economy is focused on the use of secondary raw materials. A big challenge for modern production is to use different types of waste to obtain new products without the use of raw materials. This kind of production requires new knowledge, adaptation of existing technologies or new technologies, new jobs, etc. Large amounts of vegetative residues are produced annually by agriculture. Agricultural waste is very often incinerated or disposed of on land and is still not used.  Most of the agricultural waste ashes consist of silicon dioxide along with other oxides which may vary according to region and atmosphere of the local conditions.  This paper gives an overview of the possibilities of using agricultural waste for obtaining glass and glass ceramics.   Previous research has shown that various types of glass and glass-ceramics can be successfully obtained from agricultural waste, which can be used in construction, medicine, various composites, etc.
PB  - Banja Luka : University in Banja Luka, Faculty of Technology
C3  - XIV Conference of chemists, technologists and environmentalists of Republic of srpska
T1  - Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review
EP  - 241
SP  - 237
ER  - 
@conference{
author = "Topalović, Vladimir and Nikolić, Jelena and Savić, Veljko and Matijašević, Srđan and Đošić, Marija and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "Global trends are moving towards a circular economy to replace the deeply grounded one linear economics and waste management. Circular economy implies and the protection of human rights through sustainable development, global security natural resources, combating climate change, energy security, insurance sufficient amounts of food, reducing inequalities, preservation of health and a cleaner environment and the rights of future generations to resources, etc. The policy of procurement of raw materials in the circular economy is focused on the use of secondary raw materials. A big challenge for modern production is to use different types of waste to obtain new products without the use of raw materials. This kind of production requires new knowledge, adaptation of existing technologies or new technologies, new jobs, etc. Large amounts of vegetative residues are produced annually by agriculture. Agricultural waste is very often incinerated or disposed of on land and is still not used.  Most of the agricultural waste ashes consist of silicon dioxide along with other oxides which may vary according to region and atmosphere of the local conditions.  This paper gives an overview of the possibilities of using agricultural waste for obtaining glass and glass ceramics.   Previous research has shown that various types of glass and glass-ceramics can be successfully obtained from agricultural waste, which can be used in construction, medicine, various composites, etc.",
publisher = "Banja Luka : University in Banja Luka, Faculty of Technology",
journal = "XIV Conference of chemists, technologists and environmentalists of Republic of srpska",
title = "Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review",
pages = "241-237"
}
Topalović, V., Nikolić, J., Savić, V., Matijašević, S., Đošić, M., Zildžović, S.,& Grujić, S.. (2022). Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review. in XIV Conference of chemists, technologists and environmentalists of Republic of srpska
Banja Luka : University in Banja Luka, Faculty of Technology., 237-241.
Topalović V, Nikolić J, Savić V, Matijašević S, Đošić M, Zildžović S, Grujić S. Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review. in XIV Conference of chemists, technologists and environmentalists of Republic of srpska. 2022;:237-241..
Topalović, Vladimir, Nikolić, Jelena, Savić, Veljko, Matijašević, Srđan, Đošić, Marija, Zildžović, Snežana, Grujić, Snežana, "Use of agricultural waste as raw materials for obtaining glass and glass-ceramics: A review" in XIV Conference of chemists, technologists and environmentalists of Republic of srpska (2022):237-241.

Sinter-crystallization of coal fly ash based glass

Savić, Veljko; Topalović, Vladimir; Nikolić, Jelena; Matijašević, Srđan; Zildžović, Snežana; Grujić, Snežana

(Bor : Mining and Metallurgy Institute Bor, 2022)

TY  - CONF
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/778
AB  - The increasing production of coal fly ash waste from thermal power plants has compounded environmental and economical problems worldwide. In this research coal fly ash was mixed with glass cullet and CaCO3 and melted at T= 1500 °C. The glass was milled, pressed and sintered at T= 900 °C to obtain glass- ceramic. Obtained glass- ceramic was well sintered with low crystallinity. This material, produced from secondary raw materials, could find potential application in building industry as substitute for commercial wall and floor tiles.
PB  - Bor : Mining and Metallurgy Institute Bor
C3  - 53rd International October Conference on Mining and Metallurgy IOC 2022
T1  - Sinter-crystallization of coal fly ash based glass
EP  - 104
SP  - 101
ER  - 
@conference{
author = "Savić, Veljko and Topalović, Vladimir and Nikolić, Jelena and Matijašević, Srđan and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "The increasing production of coal fly ash waste from thermal power plants has compounded environmental and economical problems worldwide. In this research coal fly ash was mixed with glass cullet and CaCO3 and melted at T= 1500 °C. The glass was milled, pressed and sintered at T= 900 °C to obtain glass- ceramic. Obtained glass- ceramic was well sintered with low crystallinity. This material, produced from secondary raw materials, could find potential application in building industry as substitute for commercial wall and floor tiles.",
publisher = "Bor : Mining and Metallurgy Institute Bor",
journal = "53rd International October Conference on Mining and Metallurgy IOC 2022",
title = "Sinter-crystallization of coal fly ash based glass",
pages = "104-101"
}
Savić, V., Topalović, V., Nikolić, J., Matijašević, S., Zildžović, S.,& Grujić, S.. (2022). Sinter-crystallization of coal fly ash based glass. in 53rd International October Conference on Mining and Metallurgy IOC 2022
Bor : Mining and Metallurgy Institute Bor., 101-104.
Savić V, Topalović V, Nikolić J, Matijašević S, Zildžović S, Grujić S. Sinter-crystallization of coal fly ash based glass. in 53rd International October Conference on Mining and Metallurgy IOC 2022. 2022;:101-104..
Savić, Veljko, Topalović, Vladimir, Nikolić, Jelena, Matijašević, Srđan, Zildžović, Snežana, Grujić, Snežana, "Sinter-crystallization of coal fly ash based glass" in 53rd International October Conference on Mining and Metallurgy IOC 2022 (2022):101-104.

Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass

Nikolić, Jelena; Topalović, Vladimir; Matijašević, Srđan; Savić, Veljko; Đošić, Marija; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Serbian Chemical Society, 2022)

TY  - CONF
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Savić, Veljko
AU  - Đošić, Marija
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/788
AB  - Fosfatna stakla imaju jedinstveno svojstvo da se mogu potpuno rastvoriti u vodenim rastvorima, a brzina rastvaranja može da se kontroliše. Proces rastvaranja stakla počinje razmenom katjona sa površine stakla sa protonima iz rastvora (H+ ili H3O+) i hidratacijom staklene mreže. Početna brzina rastvaranja je osnovna karakteristika rastvaranja stakla. Analiza početnih brzina rastvaranja fosfatnog stakla, koje je dobijeno topljenjem,  pokazuje da su brzine značajno veće u kiseloj sredini u odnosu na brzine rastvaranja u neutralnoj. Granulacija uzorka ima veći uticaj na početne brzine u neutralnoj sredini. Granulacija uzorka ne utiče na vrednost energije aktivacija početnih brzina rastvaranja u obe sredine. U neutralnoj sredini temperatura manje utiče na hidrolizu, a više na difuziju katjona, dok je u kiseloj sredini suprotno.
PB  - Belgrade : Serbian Chemical Society
C3  - 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society
T1  - Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass
EP  - 119
SP  - 119
ER  - 
@conference{
author = "Nikolić, Jelena and Topalović, Vladimir and Matijašević, Srđan and Savić, Veljko and Đošić, Marija and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "Fosfatna stakla imaju jedinstveno svojstvo da se mogu potpuno rastvoriti u vodenim rastvorima, a brzina rastvaranja može da se kontroliše. Proces rastvaranja stakla počinje razmenom katjona sa površine stakla sa protonima iz rastvora (H+ ili H3O+) i hidratacijom staklene mreže. Početna brzina rastvaranja je osnovna karakteristika rastvaranja stakla. Analiza početnih brzina rastvaranja fosfatnog stakla, koje je dobijeno topljenjem,  pokazuje da su brzine značajno veće u kiseloj sredini u odnosu na brzine rastvaranja u neutralnoj. Granulacija uzorka ima veći uticaj na početne brzine u neutralnoj sredini. Granulacija uzorka ne utiče na vrednost energije aktivacija početnih brzina rastvaranja u obe sredine. U neutralnoj sredini temperatura manje utiče na hidrolizu, a više na difuziju katjona, dok je u kiseloj sredini suprotno.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society",
title = "Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass",
pages = "119-119"
}
Nikolić, J., Topalović, V., Matijašević, S., Savić, V., Đošić, M., Zildžović, S.,& Grujić, S.. (2022). Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass. in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 119-119.
Nikolić J, Topalović V, Matijašević S, Savić V, Đošić M, Zildžović S, Grujić S. Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass. in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society. 2022;:119-119..
Nikolić, Jelena, Topalović, Vladimir, Matijašević, Srđan, Savić, Veljko, Đošić, Marija, Zildžović, Snežana, Grujić, Snežana, "Ispitivanje uticaja pH i granulacije na početnu brzinu rastvaranja fosfatnog stakla/ Investigation of the influence of pH and granulation on the initial dissolution rate of phosphate glass" in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society (2022):119-119.

Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds

Topalović, Vladimir; Savić, Veljko; Nikolić, Jelena; Matijašević, Srđan; Đošić, Marija; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Serbian Chemical Society, 2022)

TY  - CONF
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Đošić, Marija
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/787
AB  - Staklokeramički nosači koji oponašaju strukturu kostiju dobijeni su korišćenjem poliuretanske (PU) pene i polifosfatnog stakla u prahu. Osnovno staklo je pripremljeno standardnom tehnikom izlivanja rastopa i njegovog hlađenja na sobnoj temperaturi. Kocke pene su potapane u koloidni rastvor stakla, presovane i osušene. Poliuretanska pena obložena staklenim česticama je termički obrađena i staklo je sinterovano 3 h na 620 ⁰C. Mikrostruktura, morfologija i fazni sastav pripremljenih staklokeramičkih nosača ispitivani su metodama skenirajuće elektronske mikroskopije (SEM) i rendgenske difrakcije (XRD). Dobijeni su 3D porozni staklokeramički nosači koji sadrže bioaktivne kristalne faze β-Ca3(PO4)2 i β-Ca2P2O7. Struktura sinterovanih nosača je veoma porozna, a stubovi između pora su dobro sinterovani. Dobijeni fazni sastav i mikrostruktura nosača ukazuju na mogućnost njihove primene kao bioaktivnih materijala za inženjering koštanih tkiva.
PB  - Belgrade : Serbian Chemical Society
C3  - 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society
T1  - Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds
EP  - 108
SP  - 108
ER  - 
@conference{
author = "Topalović, Vladimir and Savić, Veljko and Nikolić, Jelena and Matijašević, Srđan and Đošić, Marija and Zildžović, Snežana and Grujić, Snežana",
year = "2022",
abstract = "Staklokeramički nosači koji oponašaju strukturu kostiju dobijeni su korišćenjem poliuretanske (PU) pene i polifosfatnog stakla u prahu. Osnovno staklo je pripremljeno standardnom tehnikom izlivanja rastopa i njegovog hlađenja na sobnoj temperaturi. Kocke pene su potapane u koloidni rastvor stakla, presovane i osušene. Poliuretanska pena obložena staklenim česticama je termički obrađena i staklo je sinterovano 3 h na 620 ⁰C. Mikrostruktura, morfologija i fazni sastav pripremljenih staklokeramičkih nosača ispitivani su metodama skenirajuće elektronske mikroskopije (SEM) i rendgenske difrakcije (XRD). Dobijeni su 3D porozni staklokeramički nosači koji sadrže bioaktivne kristalne faze β-Ca3(PO4)2 i β-Ca2P2O7. Struktura sinterovanih nosača je veoma porozna, a stubovi između pora su dobro sinterovani. Dobijeni fazni sastav i mikrostruktura nosača ukazuju na mogućnost njihove primene kao bioaktivnih materijala za inženjering koštanih tkiva.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society",
title = "Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds",
pages = "108-108"
}
Topalović, V., Savić, V., Nikolić, J., Matijašević, S., Đošić, M., Zildžović, S.,& Grujić, S.. (2022). Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds. in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 108-108.
Topalović V, Savić V, Nikolić J, Matijašević S, Đošić M, Zildžović S, Grujić S. Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds. in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society. 2022;:108-108..
Topalović, Vladimir, Savić, Veljko, Nikolić, Jelena, Matijašević, Srđan, Đošić, Marija, Zildžović, Snežana, Grujić, Snežana, "Dobijanje poroznih 3D bioaktivnih staklokeramičkih nosača/Fabrication of porous 3D bioactive phosphate glass-ceramic scaffolds" in 58. Savetovanje Srpskog hemijskog društva/ 58th Meeting of the Serbian Chemical Society (2022):108-108.

The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass

Matijašević, Srđan; Grujić, Snežana R.; Nikolić, Jelena; Topalović, Vladimir; Savić, Veljko; Zildžović, Snežana; Labus, Nebojša

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2022)

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Grujić, Snežana R.
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Savić, Veljko
AU  - Zildžović, Snežana
AU  - Labus, Nebojša
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/619
AB  - The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass
EP  - 334
IS  - 3
SP  - 321
VL  - 54
DO  - 10.2298/SOS2203321M
UR  - conv_960
UR  - https://hdl.handle.net/21.15107/rcub_dais_13580
ER  - 
@article{
author = "Matijašević, Srđan and Grujić, Snežana R. and Nikolić, Jelena and Topalović, Vladimir and Savić, Veljko and Zildžović, Snežana and Labus, Nebojša",
year = "2022",
abstract = "The nucleation process of lithium germanium-phosphate glass was studied to determine the temperature range of nucleation and the temperature of the maximum nucleation rate. The differential thermal analysis (DTA), and scanning electron microscope (SEM) were used to reveal the nonisothermal and isothermal process of nucleation, respectively. The crystallization process occurred at a high homogeneous nucleation rate and the spherulitic crystal growth morphology. Nanostructured samples were obtained.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass",
pages = "334-321",
number = "3",
volume = "54",
doi = "10.2298/SOS2203321M",
url = "conv_960, https://hdl.handle.net/21.15107/rcub_dais_13580"
}
Matijašević, S., Grujić, S. R., Nikolić, J., Topalović, V., Savić, V., Zildžović, S.,& Labus, N.. (2022). The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 54(3), 321-334.
https://doi.org/10.2298/SOS2203321M
conv_960
Matijašević S, Grujić SR, Nikolić J, Topalović V, Savić V, Zildžović S, Labus N. The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass. in Science of Sintering. 2022;54(3):321-334.
doi:10.2298/SOS2203321M
conv_960 .
Matijašević, Srđan, Grujić, Snežana R., Nikolić, Jelena, Topalović, Vladimir, Savić, Veljko, Zildžović, Snežana, Labus, Nebojša, "The Analysis of the Nucleation Process of the Lithium Germanium Phosphate Glass" in Science of Sintering, 54, no. 3 (2022):321-334,
https://doi.org/10.2298/SOS2203321M .,
conv_960 .
1

The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5

Topalović, Vladimir; Matijašević, Srđan; Grujić, Snežana; Stojanović, Jovica; Nikolić, Jelena; Savić, Veljko; Zildžović, Snežana

(University of Belgrade, Technical Faculty in Bor, 2021)

TY  - CONF
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Stojanović, Jovica
AU  - Nikolić, Jelena
AU  - Savić, Veljko
AU  - Zildžović, Snežana
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/669
AB  - The glass was prepared by standard melt-quenching technique. The crystallization of powder glass from the system Li2O-Al2O3-GeO2-P2O5 was studied. The investigations were performed under non-isothermal and isothermal conditions using DTA and XRD methods. The results showed that the glass crystallize by primary crystallization. As a primary phase the LiGe2(PO4)3 is formed. The influence of particle size of the glass powder samples in the range 0-1 mm on the temperature of the DTA crystallization peak, Tp, the peak height (δT)p and the parameter Tp2/(ΔT)p was studied. It was indicated that for the particle size in the range 0.05-0.4 mm, surface and volume crystallization are significant, while for the particle size >0.4 mm the volume crystallization is dominant.
PB  - University of Belgrade, Technical Faculty in Bor
C3  - 52th International October Conference on Mining and Metalurgy-IOC 2021
T1  - The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5
EP  - 38
SP  - 35
ER  - 
@conference{
author = "Topalović, Vladimir and Matijašević, Srđan and Grujić, Snežana and Stojanović, Jovica and Nikolić, Jelena and Savić, Veljko and Zildžović, Snežana",
year = "2021",
abstract = "The glass was prepared by standard melt-quenching technique. The crystallization of powder glass from the system Li2O-Al2O3-GeO2-P2O5 was studied. The investigations were performed under non-isothermal and isothermal conditions using DTA and XRD methods. The results showed that the glass crystallize by primary crystallization. As a primary phase the LiGe2(PO4)3 is formed. The influence of particle size of the glass powder samples in the range 0-1 mm on the temperature of the DTA crystallization peak, Tp, the peak height (δT)p and the parameter Tp2/(ΔT)p was studied. It was indicated that for the particle size in the range 0.05-0.4 mm, surface and volume crystallization are significant, while for the particle size >0.4 mm the volume crystallization is dominant.",
publisher = "University of Belgrade, Technical Faculty in Bor",
journal = "52th International October Conference on Mining and Metalurgy-IOC 2021",
title = "The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5",
pages = "38-35"
}
Topalović, V., Matijašević, S., Grujić, S., Stojanović, J., Nikolić, J., Savić, V.,& Zildžović, S.. (2021). The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5. in 52th International October Conference on Mining and Metalurgy-IOC 2021
University of Belgrade, Technical Faculty in Bor., 35-38.
Topalović V, Matijašević S, Grujić S, Stojanović J, Nikolić J, Savić V, Zildžović S. The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5. in 52th International October Conference on Mining and Metalurgy-IOC 2021. 2021;:35-38..
Topalović, Vladimir, Matijašević, Srđan, Grujić, Snežana, Stojanović, Jovica, Nikolić, Jelena, Savić, Veljko, Zildžović, Snežana, "The influence of the particle size on crystallization of glass powders from the system Li2O-Al2O3-GeO2-P2O5" in 52th International October Conference on Mining and Metalurgy-IOC 2021 (2021):35-38.

Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials

Savić, Veljko; Matijašević, Srđan; Topalović, Vladimir; Nikolić, Jelena; Smiljanić, Sonja; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Society of Physical Chemists of Serbia, 2021)

TY  - CONF
AU  - Savić, Veljko
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Smiljanić, Sonja
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/797
AB  - Glass foams were produced from a green beer bottle and sugar beet factory lime (SBFL) as the foaming agent. The sintering temperature was in 750-900 oC range. Porosity and compressive strength were determined. Results showed that glass foam sintered at 750 °C has the best compressive strength and even distribution of pores throughout the volume of the sample. The increase of temperature from 800 to 900 °C compressive strength was improved while porosity has slightly dropped. Pores with diameters greater than 1000 µm were formed due to pore agglomeration. Obtained glass foams have properties comparable to commercial ones and could be used for sound and thermal insulation.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials
EP  - 433
SP  - 430
ER  - 
@conference{
author = "Savić, Veljko and Matijašević, Srđan and Topalović, Vladimir and Nikolić, Jelena and Smiljanić, Sonja and Zildžović, Snežana and Grujić, Snežana",
year = "2021",
abstract = "Glass foams were produced from a green beer bottle and sugar beet factory lime (SBFL) as the foaming agent. The sintering temperature was in 750-900 oC range. Porosity and compressive strength were determined. Results showed that glass foam sintered at 750 °C has the best compressive strength and even distribution of pores throughout the volume of the sample. The increase of temperature from 800 to 900 °C compressive strength was improved while porosity has slightly dropped. Pores with diameters greater than 1000 µm were formed due to pore agglomeration. Obtained glass foams have properties comparable to commercial ones and could be used for sound and thermal insulation.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "15th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials",
pages = "433-430"
}
Savić, V., Matijašević, S., Topalović, V., Nikolić, J., Smiljanić, S., Zildžović, S.,& Grujić, S.. (2021). Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Society of Physical Chemists of Serbia., 430-433.
Savić V, Matijašević S, Topalović V, Nikolić J, Smiljanić S, Zildžović S, Grujić S. Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials. in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2021;:430-433..
Savić, Veljko, Matijašević, Srđan, Topalović, Vladimir, Nikolić, Jelena, Smiljanić, Sonja, Zildžović, Snežana, Grujić, Snežana, "Effect of sintering temperature on the compressive strength and microstructure of glass foam made from waste materials" in 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry (2021):430-433.

Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate

Savić, Veljko; Topalović, Vladimir; Nikolić, Jelena; Matijašević, Srđan; Zildžović, Snežana; Grujić, Snežana; Smiljanić, Sonja

(Bor : University of Belgrade, Technical Faculty in Bor, 2021)

TY  - CONF
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Nikolić, Jelena
AU  - Matijašević, Srđan
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
AU  - Smiljanić, Sonja
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/795
AB  - Coal fly ash represents huge ecological problem and its reutilization should be considered. Vitrification of coal fly ash could be one of the solutions. The glass was obtained by melting a mixture of coal fly ash, glass cullet and CaCO3 at T = 1500 oC and quenching the melt in air. The chemical durability of the glass was determined by dissolution test in distilled water, HCl and NaOH at T = 95 0C for t = 2 h. It was shown that dissolution rate of glass in distillated water and NaOH is negligible, while in HCl solution was shown significant mass loss.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XIV International Mineral Processing and Recycling Conference-IMPRC 2021
T1  - Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate
EP  - 362
SP  - 357
ER  - 
@conference{
author = "Savić, Veljko and Topalović, Vladimir and Nikolić, Jelena and Matijašević, Srđan and Zildžović, Snežana and Grujić, Snežana and Smiljanić, Sonja",
year = "2021",
abstract = "Coal fly ash represents huge ecological problem and its reutilization should be considered. Vitrification of coal fly ash could be one of the solutions. The glass was obtained by melting a mixture of coal fly ash, glass cullet and CaCO3 at T = 1500 oC and quenching the melt in air. The chemical durability of the glass was determined by dissolution test in distilled water, HCl and NaOH at T = 95 0C for t = 2 h. It was shown that dissolution rate of glass in distillated water and NaOH is negligible, while in HCl solution was shown significant mass loss.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XIV International Mineral Processing and Recycling Conference-IMPRC 2021",
title = "Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate",
pages = "362-357"
}
Savić, V., Topalović, V., Nikolić, J., Matijašević, S., Zildžović, S., Grujić, S.,& Smiljanić, S.. (2021). Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate. in XIV International Mineral Processing and Recycling Conference-IMPRC 2021
Bor : University of Belgrade, Technical Faculty in Bor., 357-362.
Savić V, Topalović V, Nikolić J, Matijašević S, Zildžović S, Grujić S, Smiljanić S. Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate. in XIV International Mineral Processing and Recycling Conference-IMPRC 2021. 2021;:357-362..
Savić, Veljko, Topalović, Vladimir, Nikolić, Jelena, Matijašević, Srđan, Zildžović, Snežana, Grujić, Snežana, Smiljanić, Sonja, "Dissolution of glass made from coal fly ash, glass cullet and calcium carbonate" in XIV International Mineral Processing and Recycling Conference-IMPRC 2021 (2021):357-362.

Thermal properties of lithium germanate phosphate glass studied by DTA

Topalović, Vladimir; Matijašević, Srđan; Grujić, Snežana; Savić, Veljko; Nikolić, Jelena; Smiljanić, Sonja; Zildžović, Snežana

(Bor : University of Belgrade, Technical Faculty in Bor, 2021)

TY  - CONF
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Savić, Veljko
AU  - Nikolić, Jelena
AU  - Smiljanić, Sonja
AU  - Zildžović, Snežana
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/794
AB  - The DTA data collected for 22.5Li2O·10Al2O3∙30GeO2∙37.5P2O5 (mol%) glass sample was reported and discussed. The ease of glass formation has been studied. It was determined that the DTA exothermal temperature peaks revealed the crystallization of LiGe2(PO4)3 and GeO2 phases. The activation energy of crystallization and viscous flow was determined. The value of the Avrami exponent and reduced glass transition temperature indicates that the LiGe2(PO4)3 phase has three-dimensional growth.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XIV International Mineral Processing and Recycling Conference-IMPRC 2021
T1  - Thermal properties of lithium germanate phosphate glass studied by DTA
EP  - 256
SP  - 251
ER  - 
@conference{
author = "Topalović, Vladimir and Matijašević, Srđan and Grujić, Snežana and Savić, Veljko and Nikolić, Jelena and Smiljanić, Sonja and Zildžović, Snežana",
year = "2021",
abstract = "The DTA data collected for 22.5Li2O·10Al2O3∙30GeO2∙37.5P2O5 (mol%) glass sample was reported and discussed. The ease of glass formation has been studied. It was determined that the DTA exothermal temperature peaks revealed the crystallization of LiGe2(PO4)3 and GeO2 phases. The activation energy of crystallization and viscous flow was determined. The value of the Avrami exponent and reduced glass transition temperature indicates that the LiGe2(PO4)3 phase has three-dimensional growth.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XIV International Mineral Processing and Recycling Conference-IMPRC 2021",
title = "Thermal properties of lithium germanate phosphate glass studied by DTA",
pages = "256-251"
}
Topalović, V., Matijašević, S., Grujić, S., Savić, V., Nikolić, J., Smiljanić, S.,& Zildžović, S.. (2021). Thermal properties of lithium germanate phosphate glass studied by DTA. in XIV International Mineral Processing and Recycling Conference-IMPRC 2021
Bor : University of Belgrade, Technical Faculty in Bor., 251-256.
Topalović V, Matijašević S, Grujić S, Savić V, Nikolić J, Smiljanić S, Zildžović S. Thermal properties of lithium germanate phosphate glass studied by DTA. in XIV International Mineral Processing and Recycling Conference-IMPRC 2021. 2021;:251-256..
Topalović, Vladimir, Matijašević, Srđan, Grujić, Snežana, Savić, Veljko, Nikolić, Jelena, Smiljanić, Sonja, Zildžović, Snežana, "Thermal properties of lithium germanate phosphate glass studied by DTA" in XIV International Mineral Processing and Recycling Conference-IMPRC 2021 (2021):251-256.

The effect of composition on chemical durability of phophate glass fertilizers

Nikolić, Jelena; Topalović, Vladimir; Matijašević, Srđan; Đošić, Marija; Zildžović, Snežana; Grujić, Snežana

(Belgrade : University of Belgrade, Faculty of Mining and Geology, 2021)

TY  - CONF
AU  - Nikolić, Jelena
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Đošić, Marija
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/783
AB  - Phosphate glassy fertilizers are the new type of advanced and controlled released fertilizer, whose glassy matrixes consist of macroelements (K, P, Mg, Ca) most useful for plants and microelements (Fe, Cu, Zn, Mn) which are important to the growth and development of plants. The flexibility of glasses enables the variation of their composition and properties over a wide range. The dissolution behavior of glasses from the P2O5-SiO2-K2O-CaO-MgO system doped with various microelements in bidistilled water and the 2% aqueous solution of citric acid under static conditions was studied. The leaching tests were performed with glass powder samples (0.3–0.65 mm) at T=37 °C for periods up to 480 h. The samples mass loss, the changes of pH, as well as the concentration of elements in solution were determined.
PB  - Belgrade : University of Belgrade, Faculty of Mining and Geology
C3  - 8th International Conference Mining and Environmental Protection MEP-21
T1  - The effect of composition on chemical durability of phophate glass fertilizers
EP  - 182
SP  - 175
ER  - 
@conference{
author = "Nikolić, Jelena and Topalović, Vladimir and Matijašević, Srđan and Đošić, Marija and Zildžović, Snežana and Grujić, Snežana",
year = "2021",
abstract = "Phosphate glassy fertilizers are the new type of advanced and controlled released fertilizer, whose glassy matrixes consist of macroelements (K, P, Mg, Ca) most useful for plants and microelements (Fe, Cu, Zn, Mn) which are important to the growth and development of plants. The flexibility of glasses enables the variation of their composition and properties over a wide range. The dissolution behavior of glasses from the P2O5-SiO2-K2O-CaO-MgO system doped with various microelements in bidistilled water and the 2% aqueous solution of citric acid under static conditions was studied. The leaching tests were performed with glass powder samples (0.3–0.65 mm) at T=37 °C for periods up to 480 h. The samples mass loss, the changes of pH, as well as the concentration of elements in solution were determined.",
publisher = "Belgrade : University of Belgrade, Faculty of Mining and Geology",
journal = "8th International Conference Mining and Environmental Protection MEP-21",
title = "The effect of composition on chemical durability of phophate glass fertilizers",
pages = "182-175"
}
Nikolić, J., Topalović, V., Matijašević, S., Đošić, M., Zildžović, S.,& Grujić, S.. (2021). The effect of composition on chemical durability of phophate glass fertilizers. in 8th International Conference Mining and Environmental Protection MEP-21
Belgrade : University of Belgrade, Faculty of Mining and Geology., 175-182.
Nikolić J, Topalović V, Matijašević S, Đošić M, Zildžović S, Grujić S. The effect of composition on chemical durability of phophate glass fertilizers. in 8th International Conference Mining and Environmental Protection MEP-21. 2021;:175-182..
Nikolić, Jelena, Topalović, Vladimir, Matijašević, Srđan, Đošić, Marija, Zildžović, Snežana, Grujić, Snežana, "The effect of composition on chemical durability of phophate glass fertilizers" in 8th International Conference Mining and Environmental Protection MEP-21 (2021):175-182.

Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand

Savić, Veljko; Topalović, Vladimir; Matijašević, Srđan; Nikolić, Jelena; Grujić, Snežana; Zildžović, Snežana; Radulović, Aleksandra

(Savez inženjera metalurgije Srbije, Beograd, 2021)

TY  - JOUR
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Nikolić, Jelena
AU  - Grujić, Snežana
AU  - Zildžović, Snežana
AU  - Radulović, Aleksandra
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/597
AB  - In this study, the glass-composite was prepared using glass cullet and waste foundry sand as raw materials. The powder technology route was employed. The mixtures containing 10-50 wt% of the sand were sintered at T = 750 degrees C for t =1h. XRD and DTA analyses were performed. The chemical durability of the resulting glass-composite was determined by leaching test in HCl, H2SO4, NaOH and distilled water at T = 95 degrees C for t =1h. It was shown that the sintering process carried out without the crystallization of the glass matrix. The lowest chemical durability was determined in alkali solution of glasscomposite.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metallurgical & Materials Engineering
T1  - Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand
EP  - 113
IS  - 1
SP  - 105
VL  - 27
DO  - 10.30544/477
UR  - conv_906
ER  - 
@article{
author = "Savić, Veljko and Topalović, Vladimir and Matijašević, Srđan and Nikolić, Jelena and Grujić, Snežana and Zildžović, Snežana and Radulović, Aleksandra",
year = "2021",
abstract = "In this study, the glass-composite was prepared using glass cullet and waste foundry sand as raw materials. The powder technology route was employed. The mixtures containing 10-50 wt% of the sand were sintered at T = 750 degrees C for t =1h. XRD and DTA analyses were performed. The chemical durability of the resulting glass-composite was determined by leaching test in HCl, H2SO4, NaOH and distilled water at T = 95 degrees C for t =1h. It was shown that the sintering process carried out without the crystallization of the glass matrix. The lowest chemical durability was determined in alkali solution of glasscomposite.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metallurgical & Materials Engineering",
title = "Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand",
pages = "113-105",
number = "1",
volume = "27",
doi = "10.30544/477",
url = "conv_906"
}
Savić, V., Topalović, V., Matijašević, S., Nikolić, J., Grujić, S., Zildžović, S.,& Radulović, A.. (2021). Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand. in Metallurgical & Materials Engineering
Savez inženjera metalurgije Srbije, Beograd., 27(1), 105-113.
https://doi.org/10.30544/477
conv_906
Savić V, Topalović V, Matijašević S, Nikolić J, Grujić S, Zildžović S, Radulović A. Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand. in Metallurgical & Materials Engineering. 2021;27(1):105-113.
doi:10.30544/477
conv_906 .
Savić, Veljko, Topalović, Vladimir, Matijašević, Srđan, Nikolić, Jelena, Grujić, Snežana, Zildžović, Snežana, Radulović, Aleksandra, "Chemical durability of sintered glass-composite prepared from glass cullet and waste foundry sand" in Metallurgical & Materials Engineering, 27, no. 1 (2021):105-113,
https://doi.org/10.30544/477 .,
conv_906 .
2
2

The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass

Matijašević, Srđan; Topalović, Vladimir; Grujić, Snežana R.; Savić, Veljko; Nikolić, Jelena; Labus, Nebojša; Zildžović, Snežana

(Međunarodni Institut za nauku o sinterovanju, Beograd, 2021)

TY  - JOUR
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Grujić, Snežana R.
AU  - Savić, Veljko
AU  - Nikolić, Jelena
AU  - Labus, Nebojša
AU  - Zildžović, Snežana
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/576
AB  - The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (DIL), differential thermal analysis (DTA), and differential scanning calorimetry (DSC) were used to determine the characteristic temperatures and enthalpies of crystallization and melting of the crystalline phase. The DTA and DIL were used to obtain the viscosity curves by applying the VogelFulcher-Tammann (VFT) equation.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass
EP  - 310
IS  - 3
SP  - 301
VL  - 53
DO  - 10.2298/SOS2103301M
UR  - conv_926
ER  - 
@article{
author = "Matijašević, Srđan and Topalović, Vladimir and Grujić, Snežana R. and Savić, Veljko and Nikolić, Jelena and Labus, Nebojša and Zildžović, Snežana",
year = "2021",
abstract = "The selected lithium germanium-phosphate glass was prepared by a conventional melt-quenching technique. The XRD method was employed to confirm the glass was obtained and to reveal crystalline phases during heat treatment. The dilatometry (DIL), differential thermal analysis (DTA), and differential scanning calorimetry (DSC) were used to determine the characteristic temperatures and enthalpies of crystallization and melting of the crystalline phase. The DTA and DIL were used to obtain the viscosity curves by applying the VogelFulcher-Tammann (VFT) equation.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass",
pages = "310-301",
number = "3",
volume = "53",
doi = "10.2298/SOS2103301M",
url = "conv_926"
}
Matijašević, S., Topalović, V., Grujić, S. R., Savić, V., Nikolić, J., Labus, N.,& Zildžović, S.. (2021). The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 53(3), 301-310.
https://doi.org/10.2298/SOS2103301M
conv_926
Matijašević S, Topalović V, Grujić SR, Savić V, Nikolić J, Labus N, Zildžović S. The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass. in Science of Sintering. 2021;53(3):301-310.
doi:10.2298/SOS2103301M
conv_926 .
Matijašević, Srđan, Topalović, Vladimir, Grujić, Snežana R., Savić, Veljko, Nikolić, Jelena, Labus, Nebojša, Zildžović, Snežana, "The Thermophysical Properties of Primary Phase in Lithium Germanium Phosphate Glass" in Science of Sintering, 53, no. 3 (2021):301-310,
https://doi.org/10.2298/SOS2103301M .,
conv_926 .
1
4

Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching

Pantović-Spajić, Katarina; Marković, Branislav; Pavlović, Miroslav M.; Sokić, Miroslav; Zildžović, Snežana; Đorđević, Nataša; Stojanović, Ksenija

(Srpsko hemijsko društvo, Beograd, 2021)

TY  - JOUR
AU  - Pantović-Spajić, Katarina
AU  - Marković, Branislav
AU  - Pavlović, Miroslav M.
AU  - Sokić, Miroslav
AU  - Zildžović, Snežana
AU  - Đorđević, Nataša
AU  - Stojanović, Ksenija
PY  - 2021
UR  - https://ritnms.itnms.ac.rs/handle/123456789/575
AB  - The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 degrees C.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching
EP  - 1126
IS  - 11
SP  - 1113
VL  - 86
DO  - 10.2298/JSC210719061P
UR  - conv_924
ER  - 
@article{
author = "Pantović-Spajić, Katarina and Marković, Branislav and Pavlović, Miroslav M. and Sokić, Miroslav and Zildžović, Snežana and Đorđević, Nataša and Stojanović, Ksenija",
year = "2021",
abstract = "The study is focused on the determination of the most effective chemical leaching process for the simultaneous demineralization/deashing and desulfurization of subbituminous coal from the Bogovina Basin. Coal was treated for 30 min, at different temperatures, using variable concentrations of hydrochloric, nitric, acetic and citric acids; hydrogen peroxide, mixture of hydrogen peroxide and nitric acid (pH 2), as well as by the stepwise leaching process (nitric acid + mixture of hydrogen peroxide and nitric acid, pH 2). The changes in mineral composition, caused by the chemical leaching, are followed using X-ray diffraction, whereas alterations of coal organic matter are tracked by Fourier-transform infrared spectroscopy and the content of fixed carbon. Inorganic acid leaching, regardless of the temperature and acid concentration, enabled the successful deashing of coal, whereas the percent of desulfurization was insufficient. The organic acid leaching was not satisfactory for both, deashing and desulfurization. Leaching by H2O2 and H2O2/HNO3 mixture (pH 2) resulted in moderate desulfurization, but the ash reduction was low. The most suitable method for the simultaneous effective ash (78 wt.%) and the sulfur (66 wt. %) removal from Bogovina coal is the two-step leaching, combining 10 vol. % HNO3 and mixture of 35 vol. % H2O2/10 vol. % HNO3 of pH 2 at 60 degrees C.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching",
pages = "1126-1113",
number = "11",
volume = "86",
doi = "10.2298/JSC210719061P",
url = "conv_924"
}
Pantović-Spajić, K., Marković, B., Pavlović, M. M., Sokić, M., Zildžović, S., Đorđević, N.,& Stojanović, K.. (2021). Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 86(11), 1113-1126.
https://doi.org/10.2298/JSC210719061P
conv_924
Pantović-Spajić K, Marković B, Pavlović MM, Sokić M, Zildžović S, Đorđević N, Stojanović K. Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching. in Journal of the Serbian Chemical Society. 2021;86(11):1113-1126.
doi:10.2298/JSC210719061P
conv_924 .
Pantović-Spajić, Katarina, Marković, Branislav, Pavlović, Miroslav M., Sokić, Miroslav, Zildžović, Snežana, Đorđević, Nataša, Stojanović, Ksenija, "Deashing and desulfurization of subbituminous coal from the East field (Bogovina Basin, Serbia) - Insights from chemical leaching" in Journal of the Serbian Chemical Society, 86, no. 11 (2021):1113-1126,
https://doi.org/10.2298/JSC210719061P .,
conv_924 .
1
1
2

Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia

Dević, Gordana J.; Ilić, Mila V.; Zildžović, Snežana; Avdalović, Jelena; Miletić, Srdan B.; Bulatović, Sandra S.; Vrvić, Miroslav

(Taylor & Francis Inc, Philadelphia, 2020)

TY  - JOUR
AU  - Dević, Gordana J.
AU  - Ilić, Mila V.
AU  - Zildžović, Snežana
AU  - Avdalović, Jelena
AU  - Miletić, Srdan B.
AU  - Bulatović, Sandra S.
AU  - Vrvić, Miroslav
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/557
AB  - Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 +/- 12.3 mg/kg) and Ni (94.9 +/- 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering
T1  - Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia
EP  - 775
IS  - 6
SP  - 765
VL  - 55
DO  - 10.1080/10934529.2020.1741999
UR  - conv_878
ER  - 
@article{
author = "Dević, Gordana J. and Ilić, Mila V. and Zildžović, Snežana and Avdalović, Jelena and Miletić, Srdan B. and Bulatović, Sandra S. and Vrvić, Miroslav",
year = "2020",
abstract = "Concentrations of 10 potentially toxic trace elements were measured in soil samples collected from 18 sites in urban areas of Belgrade, the capital and the largest city in Serbia. Samples were analysed in order to assess the extent of soil contamination and to distinguish natural and anthropogenic input. The results demonstrated a general Zn, Pb, and Cd enrichment in surface samples, hence, after comparison with guidelines, it has been determined that there is a potential risk for human health. In the surface and buried samples, traces of cooper were detected. The highest concentrations of Cr (121 +/- 12.3 mg/kg) and Ni (94.9 +/- 12.6 mg/kg) were found at a sediment depth of 2 m and should be ascribed to geogenic sources. The results of HCA and PCA analysis supported a natural origin of Co, Cu, Mn, Cr, and Ni, while Cd, Zn, and Pb originated from anthropogenic inputs. Based on the pollution indices, Cd made the most dominant contribution, posing a high contamination risk in the studied area. Results of Nemerow pollution index (PIN) and potential ecological risk index (PER) demonstrated that pollution by heavy metals in sediments on several sites is moderately intense.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering",
title = "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia",
pages = "775-765",
number = "6",
volume = "55",
doi = "10.1080/10934529.2020.1741999",
url = "conv_878"
}
Dević, G. J., Ilić, M. V., Zildžović, S., Avdalović, J., Miletić, S. B., Bulatović, S. S.,& Vrvić, M.. (2020). Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering
Taylor & Francis Inc, Philadelphia., 55(6), 765-775.
https://doi.org/10.1080/10934529.2020.1741999
conv_878
Dević GJ, Ilić MV, Zildžović S, Avdalović J, Miletić SB, Bulatović SS, Vrvić M. Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia. in Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering. 2020;55(6):765-775.
doi:10.1080/10934529.2020.1741999
conv_878 .
Dević, Gordana J., Ilić, Mila V., Zildžović, Snežana, Avdalović, Jelena, Miletić, Srdan B., Bulatović, Sandra S., Vrvić, Miroslav, "Investigation of potentially toxic elements in urban sediments in Belgrade, Serbia" in Journal of Environmental Science and Health Part A-Toxic/Hazardous Substances & Environmental Engineering, 55, no. 6 (2020):765-775,
https://doi.org/10.1080/10934529.2020.1741999 .,
conv_878 .
6
1
5

Corrosion of coal fly ash glass

Savić, Veljko; Topalović, Vladimir; Matijašević, Srđan; Nikolić, Jelena; Zildžović, Snežana; Smiljanić, Sonja; Grujić, Snežana

(Belgrade : Serbian Ceramic Society, 2019)

TY  - CONF
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/804
AB  - The increasing production of coal fly ash waste from thermal power plants has compounded environmental and economical problems worldwide. Considerable research has been undertaken because of the environmental problems presented by the fly ash. The goal is to produce usable material from waste. The aim of this papier is to produce glass from fly ash and limestone that will have high resistance to dissolution and leaching. Obtained glass could have wide application in industry. Coal fly ash was mixed with 37% limestone and melted in electric furnace at T=1500 °C during t=1 h. The obtained glass sample was black, without visible residual gas bubbles. X-ray powder diffraction (XRD)analysis confirmed the quenched melt to be amorphous. To determine the chemical durability, glass sample was crushed and then sieved to grain size 0.3-0.5 mm. The corrosion test was performed in a distilled water, HCl and NaOH solution (0.01 M9 at T=95 °C for t=2h using 2 g of samples and 70 ml of solution. The results of corrosion test revealed a high durability of the glass sample. Potential application of this material would include use as: building blocks, anticorrosive container lining, matrix material in which radioactive wastes and heavy metals could be successfully solidified into the glass structure.
PB  - Belgrade : Serbian Ceramic Society
C3  - ADVANCED CERAMICS AND APPLICATION VIII New Frontiers in Multifunctional Material Science and Processing
T1  - Corrosion of coal fly ash glass
EP  - 59
SP  - 59
ER  - 
@conference{
author = "Savić, Veljko and Topalović, Vladimir and Matijašević, Srđan and Nikolić, Jelena and Zildžović, Snežana and Smiljanić, Sonja and Grujić, Snežana",
year = "2019",
abstract = "The increasing production of coal fly ash waste from thermal power plants has compounded environmental and economical problems worldwide. Considerable research has been undertaken because of the environmental problems presented by the fly ash. The goal is to produce usable material from waste. The aim of this papier is to produce glass from fly ash and limestone that will have high resistance to dissolution and leaching. Obtained glass could have wide application in industry. Coal fly ash was mixed with 37% limestone and melted in electric furnace at T=1500 °C during t=1 h. The obtained glass sample was black, without visible residual gas bubbles. X-ray powder diffraction (XRD)analysis confirmed the quenched melt to be amorphous. To determine the chemical durability, glass sample was crushed and then sieved to grain size 0.3-0.5 mm. The corrosion test was performed in a distilled water, HCl and NaOH solution (0.01 M9 at T=95 °C for t=2h using 2 g of samples and 70 ml of solution. The results of corrosion test revealed a high durability of the glass sample. Potential application of this material would include use as: building blocks, anticorrosive container lining, matrix material in which radioactive wastes and heavy metals could be successfully solidified into the glass structure.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "ADVANCED CERAMICS AND APPLICATION VIII New Frontiers in Multifunctional Material Science and Processing",
title = "Corrosion of coal fly ash glass",
pages = "59-59"
}
Savić, V., Topalović, V., Matijašević, S., Nikolić, J., Zildžović, S., Smiljanić, S.,& Grujić, S.. (2019). Corrosion of coal fly ash glass. in ADVANCED CERAMICS AND APPLICATION VIII New Frontiers in Multifunctional Material Science and Processing
Belgrade : Serbian Ceramic Society., 59-59.
Savić V, Topalović V, Matijašević S, Nikolić J, Zildžović S, Smiljanić S, Grujić S. Corrosion of coal fly ash glass. in ADVANCED CERAMICS AND APPLICATION VIII New Frontiers in Multifunctional Material Science and Processing. 2019;:59-59..
Savić, Veljko, Topalović, Vladimir, Matijašević, Srđan, Nikolić, Jelena, Zildžović, Snežana, Smiljanić, Sonja, Grujić, Snežana, "Corrosion of coal fly ash glass" in ADVANCED CERAMICS AND APPLICATION VIII New Frontiers in Multifunctional Material Science and Processing (2019):59-59.

Production of glass-ceramics from coal fly ash and limestone

Savić, Veljko; Topalović, Vladimir; Matijašević, Srđan; Nikolić, Jelena; Zildžović, Snežana; Smiljanić, Sonja; Grujić, Snežana

(Bor : University of Belgrade, Technical Faculty in Bor, 2019)

TY  - CONF
AU  - Savić, Veljko
AU  - Topalović, Vladimir
AU  - Matijašević, Srđan
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/796
AB  - The results of laboratory scale experiments of vitrification of fly ash collected from the coal fired power plant are presented. The final glassy material was obtained by melting a mixture of ash and limestone at T= 1450 oC and quenching the melt in air. To convert the waste into useful and environmentally acceptable material the crystallization of fly ash glass was performed by powder route processing. The properties of the resultant glass-ceramic indicate a potential various application such as building materials, ceramics tiles, etc.
PB  - Bor : University of Belgrade, Technical Faculty in Bor
C3  - XIII International Mineral Processing and Recycling Conference-IMPRC
T1  - Production of glass-ceramics from coal fly ash and limestone
EP  - 140
SP  - 135
ER  - 
@conference{
author = "Savić, Veljko and Topalović, Vladimir and Matijašević, Srđan and Nikolić, Jelena and Zildžović, Snežana and Smiljanić, Sonja and Grujić, Snežana",
year = "2019",
abstract = "The results of laboratory scale experiments of vitrification of fly ash collected from the coal fired power plant are presented. The final glassy material was obtained by melting a mixture of ash and limestone at T= 1450 oC and quenching the melt in air. To convert the waste into useful and environmentally acceptable material the crystallization of fly ash glass was performed by powder route processing. The properties of the resultant glass-ceramic indicate a potential various application such as building materials, ceramics tiles, etc.",
publisher = "Bor : University of Belgrade, Technical Faculty in Bor",
journal = "XIII International Mineral Processing and Recycling Conference-IMPRC",
title = "Production of glass-ceramics from coal fly ash and limestone",
pages = "140-135"
}
Savić, V., Topalović, V., Matijašević, S., Nikolić, J., Zildžović, S., Smiljanić, S.,& Grujić, S.. (2019). Production of glass-ceramics from coal fly ash and limestone. in XIII International Mineral Processing and Recycling Conference-IMPRC
Bor : University of Belgrade, Technical Faculty in Bor., 135-140.
Savić V, Topalović V, Matijašević S, Nikolić J, Zildžović S, Smiljanić S, Grujić S. Production of glass-ceramics from coal fly ash and limestone. in XIII International Mineral Processing and Recycling Conference-IMPRC. 2019;:135-140..
Savić, Veljko, Topalović, Vladimir, Matijašević, Srđan, Nikolić, Jelena, Zildžović, Snežana, Smiljanić, Sonja, Grujić, Snežana, "Production of glass-ceramics from coal fly ash and limestone" in XIII International Mineral Processing and Recycling Conference-IMPRC (2019):135-140.

Glass-ceramics obtained from copper mine tailings and glass cullets

Savić, Veljko; Matijašević, Srđan; Topalović, Vladimir; Smiljanić, Sonja; Nikolić, Jelena; Zildžović, Snežana; Grujić, Snežana

(Belgrade : Association of Metallurgical Engineers of Serbia, 2019)

TY  - CONF
AU  - Savić, Veljko
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Smiljanić, Sonja
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
AU  - Grujić, Snežana
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/790
AB  - Copper mine tailings is one of the most used secondary raw materials. The most common use is in cement industry and as filler in road construction. The area of secondary raw materials utilization offering the greatest potential is in the development of glass-ceramic compositions, where the waste is melted to form a glass, fabricated using conventional glass forming techniques, and subsequently nucleated and devitrified in a controlled manner through heat treatment. The resultant, partially crystallized material offers improved strength, chemical and abrasion resistance. Copper mine tailings was mixed with 30% glass cullets and melted in electric furnace BLF 17/3 at T=1450 °C during t=0.5 h. The obtained glass sample was black, without visible residual gas bubbles. X-ray powder diffraction (XRD) analysis confirmed the quenched melt to be amorphous. DTA and HSM analysis was performed on the previously prepared glass powder. The glass powder samples were pressed in pellets and sintered in an electric furnace at the temperature of 1040 °C for 2h and a glass- ceramics was obtained. Applications for these glass-ceramic materials would include structural products, pipe or pipeliners to transport abrasive or corrosive fluids, alkali-resistant fibers to replace asbestos in concrete products, and use as a matrix material in which radioactive wastes could be chemically incorporated in a stable, nonleachable, solid form.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
T1  - Glass-ceramics obtained from copper mine tailings and glass cullets
EP  - 33
SP  - 33
ER  - 
@conference{
author = "Savić, Veljko and Matijašević, Srđan and Topalović, Vladimir and Smiljanić, Sonja and Nikolić, Jelena and Zildžović, Snežana and Grujić, Snežana",
year = "2019",
abstract = "Copper mine tailings is one of the most used secondary raw materials. The most common use is in cement industry and as filler in road construction. The area of secondary raw materials utilization offering the greatest potential is in the development of glass-ceramic compositions, where the waste is melted to form a glass, fabricated using conventional glass forming techniques, and subsequently nucleated and devitrified in a controlled manner through heat treatment. The resultant, partially crystallized material offers improved strength, chemical and abrasion resistance. Copper mine tailings was mixed with 30% glass cullets and melted in electric furnace BLF 17/3 at T=1450 °C during t=0.5 h. The obtained glass sample was black, without visible residual gas bubbles. X-ray powder diffraction (XRD) analysis confirmed the quenched melt to be amorphous. DTA and HSM analysis was performed on the previously prepared glass powder. The glass powder samples were pressed in pellets and sintered in an electric furnace at the temperature of 1040 °C for 2h and a glass- ceramics was obtained. Applications for these glass-ceramic materials would include structural products, pipe or pipeliners to transport abrasive or corrosive fluids, alkali-resistant fibers to replace asbestos in concrete products, and use as a matrix material in which radioactive wastes could be chemically incorporated in a stable, nonleachable, solid form.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019",
title = "Glass-ceramics obtained from copper mine tailings and glass cullets",
pages = "33-33"
}
Savić, V., Matijašević, S., Topalović, V., Smiljanić, S., Nikolić, J., Zildžović, S.,& Grujić, S.. (2019). Glass-ceramics obtained from copper mine tailings and glass cullets. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019
Belgrade : Association of Metallurgical Engineers of Serbia., 33-33.
Savić V, Matijašević S, Topalović V, Smiljanić S, Nikolić J, Zildžović S, Grujić S. Glass-ceramics obtained from copper mine tailings and glass cullets. in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019. 2019;:33-33..
Savić, Veljko, Matijašević, Srđan, Topalović, Vladimir, Smiljanić, Sonja, Nikolić, Jelena, Zildžović, Snežana, Grujić, Snežana, "Glass-ceramics obtained from copper mine tailings and glass cullets" in 4th Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2019 (2019):33-33.

Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass

Savić, Veljko; Matijašević, Srđan; Topalović, Vladimir; Zildžović, Snežana; Smiljanić, Sonja; Grujić, Snežana

(Bor : Mining and Metallurgy Institute Bor, 2018)

TY  - CONF
AU  - Savić, Veljko
AU  - Matijašević, Srđan
AU  - Topalović, Vladimir
AU  - Zildžović, Snežana
AU  - Smiljanić, Sonja
AU  - Grujić, Snežana
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/745
AB  - The nucleation of powder glass from the system Li2O-Al2O3-GeO2-P2O5 was studied. The investigations were performed under non-isothermal conditions using the  DTA method. The field of nucleation is determined. It was observed that there is possibility of simultaneous nucleation and crystal growth in glass. Dependence (Tp-1)max of Tn is linear for studied glass system.
PB  - Bor : Mining and Metallurgy Institute Bor
C3  - 50th International October Conference on Mining and Metallurgy-IOCMM 2018
T1  - Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass
EP  - 222
SP  - 219
ER  - 
@conference{
author = "Savić, Veljko and Matijašević, Srđan and Topalović, Vladimir and Zildžović, Snežana and Smiljanić, Sonja and Grujić, Snežana",
year = "2018",
abstract = "The nucleation of powder glass from the system Li2O-Al2O3-GeO2-P2O5 was studied. The investigations were performed under non-isothermal conditions using the  DTA method. The field of nucleation is determined. It was observed that there is possibility of simultaneous nucleation and crystal growth in glass. Dependence (Tp-1)max of Tn is linear for studied glass system.",
publisher = "Bor : Mining and Metallurgy Institute Bor",
journal = "50th International October Conference on Mining and Metallurgy-IOCMM 2018",
title = "Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass",
pages = "222-219"
}
Savić, V., Matijašević, S., Topalović, V., Zildžović, S., Smiljanić, S.,& Grujić, S.. (2018). Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass. in 50th International October Conference on Mining and Metallurgy-IOCMM 2018
Bor : Mining and Metallurgy Institute Bor., 219-222.
Savić V, Matijašević S, Topalović V, Zildžović S, Smiljanić S, Grujić S. Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass. in 50th International October Conference on Mining and Metallurgy-IOCMM 2018. 2018;:219-222..
Savić, Veljko, Matijašević, Srđan, Topalović, Vladimir, Zildžović, Snežana, Smiljanić, Sonja, Grujić, Snežana, "Non-isothermal analysis of nucleation the Li2O-GeO2-Al2O3-P2O5 glass" in 50th International October Conference on Mining and Metallurgy-IOCMM 2018 (2018):219-222.

Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5

Savić, Veljko; Matijašević, Srđan; Grujić, Snežana; Topalović, Vladimir; Smiljanić, Sonja; Nikolić, Jelena; Zildžović, Snežana

(Belgrade : Association of Metallurgical Engineers of Serbia, 2017)

TY  - CONF
AU  - Savić, Veljko
AU  - Matijašević, Srđan
AU  - Grujić, Snežana
AU  - Topalović, Vladimir
AU  - Smiljanić, Sonja
AU  - Nikolić, Jelena
AU  - Zildžović, Snežana
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/789
AB  - Lithium based solid electrolytes are mainly useful for utilization in high energy density batteries, supercapacitors, sensors, displays and electrochemical devices. They generally crystallize in rhombohedral R3-c(167) space group related to open structures and the monovalent Li+ cation can easily migrate in lattice with low activation energy. These materials are usually obtained by powder sintering route and the crystallization of these glasses. The studies of crystallization of Li2O–Al2O3–GeO2–P2O5 glasses showed that one of dominant crystal phase precipitated in glass matrix is NASICON - type LiGe2(PO4)3 crystals. It was detected that this glass crystallizes by the volume crystallization mechanism. The enthalpy of crystallization ΔHcryst= -48.36 kJmol-1 was determined. The density of the crystalline phase was ρ=3.52 gcm-3 and molar volume Vm = 121.09 ·10-6 m3. The ionic conductivity of the test phase which be-longs to the solid solutions is about 6.2· 10−6 Scm-1 at room temperature.
It may be considered that the structure of this glass consists of GeO6 octahedra and PO4 tetrahedra. The basic unit of this glass consists of two GeO6 octahedra and PO4 tetrahedra corresponding to [Ge2(PO4)]. Each GeO6 octahedron is connected to three PO4 tetrahedra, each of which is linked to four GeO6 octahedra.
These units in turn are connected to form `ribbons` along the c-axis and the ribbons are joined together along the a-and b-axis by PO4 tetrahedra. This structure results in cavities where lithium ions reside and in bottlenecks in which they pass through.
PB  - Belgrade : Association of Metallurgical Engineers of Serbia
C3  - Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017
T1  - Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5
EP  - 46
SP  - 46
ER  - 
@conference{
author = "Savić, Veljko and Matijašević, Srđan and Grujić, Snežana and Topalović, Vladimir and Smiljanić, Sonja and Nikolić, Jelena and Zildžović, Snežana",
year = "2017",
abstract = "Lithium based solid electrolytes are mainly useful for utilization in high energy density batteries, supercapacitors, sensors, displays and electrochemical devices. They generally crystallize in rhombohedral R3-c(167) space group related to open structures and the monovalent Li+ cation can easily migrate in lattice with low activation energy. These materials are usually obtained by powder sintering route and the crystallization of these glasses. The studies of crystallization of Li2O–Al2O3–GeO2–P2O5 glasses showed that one of dominant crystal phase precipitated in glass matrix is NASICON - type LiGe2(PO4)3 crystals. It was detected that this glass crystallizes by the volume crystallization mechanism. The enthalpy of crystallization ΔHcryst= -48.36 kJmol-1 was determined. The density of the crystalline phase was ρ=3.52 gcm-3 and molar volume Vm = 121.09 ·10-6 m3. The ionic conductivity of the test phase which be-longs to the solid solutions is about 6.2· 10−6 Scm-1 at room temperature.
It may be considered that the structure of this glass consists of GeO6 octahedra and PO4 tetrahedra. The basic unit of this glass consists of two GeO6 octahedra and PO4 tetrahedra corresponding to [Ge2(PO4)]. Each GeO6 octahedron is connected to three PO4 tetrahedra, each of which is linked to four GeO6 octahedra.
These units in turn are connected to form `ribbons` along the c-axis and the ribbons are joined together along the a-and b-axis by PO4 tetrahedra. This structure results in cavities where lithium ions reside and in bottlenecks in which they pass through.",
publisher = "Belgrade : Association of Metallurgical Engineers of Serbia",
journal = "Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017",
title = "Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5",
pages = "46-46"
}
Savić, V., Matijašević, S., Grujić, S., Topalović, V., Smiljanić, S., Nikolić, J.,& Zildžović, S.. (2017). Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5. in Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017
Belgrade : Association of Metallurgical Engineers of Serbia., 46-46.
Savić V, Matijašević S, Grujić S, Topalović V, Smiljanić S, Nikolić J, Zildžović S. Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5. in Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017. 2017;:46-46..
Savić, Veljko, Matijašević, Srđan, Grujić, Snežana, Topalović, Vladimir, Smiljanić, Sonja, Nikolić, Jelena, Zildžović, Snežana, "Ion conductive glass-ceramics in the system Li2O·Al2O3·GeO2·P2O5" in Metallurgical & Materials Engineering Congress of South-East Europe MME SEE 2017 (2017):46-46.