TY  - JOUR
AU  - Kragović, Milan
AU  - Stojmenović, Marija
AU  - Ristić, Nenad
AU  - Milićević, Sonja
AU  - Živković, Sanja
AU  - Liu, Shanke
AU  - Gulicovski, Jelena
PY  - 2022
UR  - https://ritnms.itnms.ac.rs/handle/123456789/612
AB  - Solving problems with hazardous waste materials is of crucial importance today. In the presented study, the application of waste vitreous enamel as a cement replacement up to 30% in mortar and concrete production was investigated. The chemical and physical-chemical characterization of the starting material was performed, as well as a leaching test and physical-mechanical characterization of mortar and concrete mixes. Obtained results showed that, due to its chemical composition, the vitreous enamel used must be classified as hazardous waste. At the same time, it possesses pozzolanic properties and satisfies minimal criteria for use as a cement replacement. Testing mortars and concrete mixes indicate that waste vitreous enamel can be applied as a construction material for cement replacement in the maximal amount of 20%. The leaching test was performed in accordance with international standard EN 12457-2 on hardened mortar with a maximal cement replacement of 20%. The results showed that there was no significant release of toxic elements, i.e., that the practical application of hazardous waste vitreous enamel in the construction industry may be fully in line with environmental standards.
PB  - MDPI, Basel
T2  - Buildings
T1  - Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement
IS  - 8
VL  - 12
DO  - 10.3390/buildings12081287
UR  - conv_951
ER  - 

@article{
author = "Kragović, Milan and Stojmenović, Marija and Ristić, Nenad and Milićević, Sonja and Živković, Sanja and Liu, Shanke and Gulicovski, Jelena",
year = "2022",
abstract = "Solving problems with hazardous waste materials is of crucial importance today. In the presented study, the application of waste vitreous enamel as a cement replacement up to 30% in mortar and concrete production was investigated. The chemical and physical-chemical characterization of the starting material was performed, as well as a leaching test and physical-mechanical characterization of mortar and concrete mixes. Obtained results showed that, due to its chemical composition, the vitreous enamel used must be classified as hazardous waste. At the same time, it possesses pozzolanic properties and satisfies minimal criteria for use as a cement replacement. Testing mortars and concrete mixes indicate that waste vitreous enamel can be applied as a construction material for cement replacement in the maximal amount of 20%. The leaching test was performed in accordance with international standard EN 12457-2 on hardened mortar with a maximal cement replacement of 20%. The results showed that there was no significant release of toxic elements, i.e., that the practical application of hazardous waste vitreous enamel in the construction industry may be fully in line with environmental standards.",
publisher = "MDPI, Basel",
journal = "Buildings",
title = "Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement",
number = "8",
volume = "12",
doi = "10.3390/buildings12081287",
url = "conv_951"
}

Kragović, M., Stojmenović, M., Ristić, N., Milićević, S., Živković, S., Liu, S.,& Gulicovski, J.. (2022). Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement. in Buildings
MDPI, Basel., 12(8).
https://doi.org/10.3390/buildings12081287
conv_951

Kragović M, Stojmenović M, Ristić N, Milićević S, Živković S, Liu S, Gulicovski J. Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement. in Buildings. 2022;12(8).
doi:10.3390/buildings12081287
conv_951 .

Kragović, Milan, Stojmenović, Marija, Ristić, Nenad, Milićević, Sonja, Živković, Sanja, Liu, Shanke, Gulicovski, Jelena, "Application of the Hazardous Waste Vitreous Enamel Generated in the Production Process of Heating Devices as a Partial Replacement for Cement" in Buildings, 12, no. 8 (2022),
https://doi.org/10.3390/buildings12081287 .,
conv_951 .

TY  - JOUR
AU  - Nedeljković, Andrijana
AU  - Stojmenović, Marija
AU  - Gulicovski, Jelena
AU  - Ristić, Nenad
AU  - Milićević, Sonja
AU  - Krstić, Jugoslav
AU  - Kragović, Milan
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/543
AB  - Numerous factors influence the complexity of environmental and waste management problems, and the most significant goal is the reuse of materials that have completed their "life cycle" and the reduction in the use of new resources. In order to reduce impact of waste slag on the environment, in the present study, waste slag, generated in heating plants after lignite combustion, was characterized in detail and tested for application as a replacement for cement in mortar or concrete production. For physical-chemical characterization of slag, different experimental and instrumental techniques were used such as chemical composition and determination of the content of heavy metals, investigation of morphological and textural properties, thermal analysis, X-ray, and infrared spectroscopy. Physical-mechanical characterization of slag was also performed and included determination of activity index, water requirement, setting time and soundness. A leaching test was also performed. Presented results show that waste slag may be used in mortar and concrete production as a partial cement replacement, but after additional combustion at 650 degrees C and partial replacement of slag with silica fume in the minimal amount of 12%. The maximal obtained cement replacement was 20% (17.8% slag and 2.2% of silica fume).
PB  - MDPI, Basel
T2  - Minerals
T1  - Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I-Physical-Chemical and Physical-Mechanical Characterization of Slag
IS  - 11
VL  - 10
DO  - 10.3390/min10110992
UR  - conv_896
ER  - 

@article{
author = "Nedeljković, Andrijana and Stojmenović, Marija and Gulicovski, Jelena and Ristić, Nenad and Milićević, Sonja and Krstić, Jugoslav and Kragović, Milan",
year = "2020",
abstract = "Numerous factors influence the complexity of environmental and waste management problems, and the most significant goal is the reuse of materials that have completed their "life cycle" and the reduction in the use of new resources. In order to reduce impact of waste slag on the environment, in the present study, waste slag, generated in heating plants after lignite combustion, was characterized in detail and tested for application as a replacement for cement in mortar or concrete production. For physical-chemical characterization of slag, different experimental and instrumental techniques were used such as chemical composition and determination of the content of heavy metals, investigation of morphological and textural properties, thermal analysis, X-ray, and infrared spectroscopy. Physical-mechanical characterization of slag was also performed and included determination of activity index, water requirement, setting time and soundness. A leaching test was also performed. Presented results show that waste slag may be used in mortar and concrete production as a partial cement replacement, but after additional combustion at 650 degrees C and partial replacement of slag with silica fume in the minimal amount of 12%. The maximal obtained cement replacement was 20% (17.8% slag and 2.2% of silica fume).",
publisher = "MDPI, Basel",
journal = "Minerals",
title = "Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I-Physical-Chemical and Physical-Mechanical Characterization of Slag",
number = "11",
volume = "10",
doi = "10.3390/min10110992",
url = "conv_896"
}

Nedeljković, A., Stojmenović, M., Gulicovski, J., Ristić, N., Milićević, S., Krstić, J.,& Kragović, M.. (2020). Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I-Physical-Chemical and Physical-Mechanical Characterization of Slag. in Minerals
MDPI, Basel., 10(11).
https://doi.org/10.3390/min10110992
conv_896

Nedeljković A, Stojmenović M, Gulicovski J, Ristić N, Milićević S, Krstić J, Kragović M. Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I-Physical-Chemical and Physical-Mechanical Characterization of Slag. in Minerals. 2020;10(11).
doi:10.3390/min10110992
conv_896 .

Nedeljković, Andrijana, Stojmenović, Marija, Gulicovski, Jelena, Ristić, Nenad, Milićević, Sonja, Krstić, Jugoslav, Kragović, Milan, "Waste Slag from Heating Plants as a Partial Replacement for Cement in Mortar and Concrete Production. Part I-Physical-Chemical and Physical-Mechanical Characterization of Slag" in Minerals, 10, no. 11 (2020),
https://doi.org/10.3390/min10110992 .,
conv_896 .

TY  - JOUR
AU  - Milićević, Sonja
AU  - Vlahović, Milica
AU  - Kragović, Milan
AU  - Martinović, Sanja
AU  - Milošević, Vladan
AU  - Jovanović, Ivana
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://ritnms.itnms.ac.rs/handle/123456789/536
AB  - The intent in this paper is to define how the batch equilibrium results of copper removal from a synthetic solution on natural zeolite can be used for prediction of the breakthrough curves in the fixed-bed system for both a synthetic solution and wastewater. Natural zeolite from the Vranjska Banja deposit, Serbia, has been fully characterized (XRD, chemical composition, DTA/TG, SEM/EDS) as a clinoptilolite with cation exchange capacity of 146 meq/100 g. The maximum adsorption capacity (q(m)) in the batch of the mono-component system (synthetic copper solution) obtained using the Langmuir isotherm model was 7.30 and 6.10 mg/g for particle size below 0.043 and 0.6-0.8 mm, respectively. Using the flow-through system with the 0.6-0.8 mm zeolite fixed-bed, almost double the adsorption capacity (11.2-12.2 mg/g) has been achieved in a saturation point for the copper removal from the synthetic solution, compared to the batch. Better results are attributed to the constant high concentration gradient in flow-through systems compared to the batch. The complex composition of wastewater and large amounts of earth alkaline metals disturb free adsorption sights on the zeolite surface. This results in a less effective adsorption in flow-through systems with adsorption capacity in breakthrough point of 5.84 mg/g (similar to 0.95 x qm) and in a saturation point of 7.10 mg/g (similar to 1.15 x qm).
PB  - MDPI, Basel
T2  - Minerals
T1  - Removal of Copper from Mining Wastewater Using Natural Raw Material-Comparative Study between the Synthetic and Natural Wastewater Samples
IS  - 9
VL  - 10
DO  - 10.3390/min10090753
UR  - conv_894
ER  - 

@article{
author = "Milićević, Sonja and Vlahović, Milica and Kragović, Milan and Martinović, Sanja and Milošević, Vladan and Jovanović, Ivana and Stojmenović, Marija",
year = "2020",
abstract = "The intent in this paper is to define how the batch equilibrium results of copper removal from a synthetic solution on natural zeolite can be used for prediction of the breakthrough curves in the fixed-bed system for both a synthetic solution and wastewater. Natural zeolite from the Vranjska Banja deposit, Serbia, has been fully characterized (XRD, chemical composition, DTA/TG, SEM/EDS) as a clinoptilolite with cation exchange capacity of 146 meq/100 g. The maximum adsorption capacity (q(m)) in the batch of the mono-component system (synthetic copper solution) obtained using the Langmuir isotherm model was 7.30 and 6.10 mg/g for particle size below 0.043 and 0.6-0.8 mm, respectively. Using the flow-through system with the 0.6-0.8 mm zeolite fixed-bed, almost double the adsorption capacity (11.2-12.2 mg/g) has been achieved in a saturation point for the copper removal from the synthetic solution, compared to the batch. Better results are attributed to the constant high concentration gradient in flow-through systems compared to the batch. The complex composition of wastewater and large amounts of earth alkaline metals disturb free adsorption sights on the zeolite surface. This results in a less effective adsorption in flow-through systems with adsorption capacity in breakthrough point of 5.84 mg/g (similar to 0.95 x qm) and in a saturation point of 7.10 mg/g (similar to 1.15 x qm).",
publisher = "MDPI, Basel",
journal = "Minerals",
title = "Removal of Copper from Mining Wastewater Using Natural Raw Material-Comparative Study between the Synthetic and Natural Wastewater Samples",
number = "9",
volume = "10",
doi = "10.3390/min10090753",
url = "conv_894"
}

Milićević, S., Vlahović, M., Kragović, M., Martinović, S., Milošević, V., Jovanović, I.,& Stojmenović, M.. (2020). Removal of Copper from Mining Wastewater Using Natural Raw Material-Comparative Study between the Synthetic and Natural Wastewater Samples. in Minerals
MDPI, Basel., 10(9).
https://doi.org/10.3390/min10090753
conv_894

Milićević S, Vlahović M, Kragović M, Martinović S, Milošević V, Jovanović I, Stojmenović M. Removal of Copper from Mining Wastewater Using Natural Raw Material-Comparative Study between the Synthetic and Natural Wastewater Samples. in Minerals. 2020;10(9).
doi:10.3390/min10090753
conv_894 .

Milićević, Sonja, Vlahović, Milica, Kragović, Milan, Martinović, Sanja, Milošević, Vladan, Jovanović, Ivana, Stojmenović, Marija, "Removal of Copper from Mining Wastewater Using Natural Raw Material-Comparative Study between the Synthetic and Natural Wastewater Samples" in Minerals, 10, no. 9 (2020),
https://doi.org/10.3390/min10090753 .,
conv_894 .

TY  - CONF
AU  - Kragović, Milan
AU  - Stojmenović, Marija
AU  - Petrović, Jelena
AU  - Loredo, Jorge
AU  - Pasalić, Snežana
AU  - Nedeljković, Andrijana
AU  - Ristović, Ivica
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/497
AB  - In this paper influence of alginate encapsulation on point of zero charge (pH(pzc)) and thermodynamic properties of the natural and Fe(III)-modified zeolite were investigated. The pH(pzc) was determined by using 0.1000 g of the samples and 50 cm(3) of the solution containing KNO3 in concentrations of 0.0001-0.01 mol/dm(3) for initial pH (pH(i)) in range between 2 and 12. The obtained pH(pzc) were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb(2+)/dm(3)) and temperatures of 30, 40 and 60 degrees C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA.
PB  - Elsevier Science Bv, Amsterdam
C3  - 12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018)
T1  - Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite
EP  - 293
SP  - 286
VL  - 32
DO  - 10.1016/j.promfg.2019.02.216
UR  - conv_854
ER  - 

@conference{
author = "Kragović, Milan and Stojmenović, Marija and Petrović, Jelena and Loredo, Jorge and Pasalić, Snežana and Nedeljković, Andrijana and Ristović, Ivica",
year = "2019",
abstract = "In this paper influence of alginate encapsulation on point of zero charge (pH(pzc)) and thermodynamic properties of the natural and Fe(III)-modified zeolite were investigated. The pH(pzc) was determined by using 0.1000 g of the samples and 50 cm(3) of the solution containing KNO3 in concentrations of 0.0001-0.01 mol/dm(3) for initial pH (pH(i)) in range between 2 and 12. The obtained pH(pzc) were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb(2+)/dm(3)) and temperatures of 30, 40 and 60 degrees C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018)",
title = "Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite",
pages = "293-286",
volume = "32",
doi = "10.1016/j.promfg.2019.02.216",
url = "conv_854"
}

Kragović, M., Stojmenović, M., Petrović, J., Loredo, J., Pasalić, S., Nedeljković, A.,& Ristović, I.. (2019). Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite. in 12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018)
Elsevier Science Bv, Amsterdam., 32, 286-293.
https://doi.org/10.1016/j.promfg.2019.02.216
conv_854

Kragović M, Stojmenović M, Petrović J, Loredo J, Pasalić S, Nedeljković A, Ristović I. Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite. in 12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018). 2019;32:286-293.
doi:10.1016/j.promfg.2019.02.216
conv_854 .

Kragović, Milan, Stojmenović, Marija, Petrović, Jelena, Loredo, Jorge, Pasalić, Snežana, Nedeljković, Andrijana, Ristović, Ivica, "Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite" in 12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018), 32 (2019):286-293,
https://doi.org/10.1016/j.promfg.2019.02.216 .,
conv_854 .

TY  - JOUR
AU  - Kragović, Milan
AU  - Pasalić, Snežana
AU  - Marković, Marija
AU  - Petrović, Marija
AU  - Nedeljković, Blagoje
AU  - Momcilović, Miloš
AU  - Stojmenović, Marija
PY  - 2018
UR  - https://ritnms.itnms.ac.rs/handle/123456789/461
AB  - In present paper, the influence of the initial pH and concentration of Pb2+ on its adsorption by the natural (NZA) and Fe(III)-modified zeolite-alginate beads (FeA) was studied. Results showed that modification of the starting materials have a positive effect on their adsorption capacities (102 and 136 mg/g for the NZA and FeA, respectively). After encapsulation, the mechanism of lead adsorption by both adsorbents was changed and ion exchange dominates. The best adsorption was achieved for initial pH > 3.8. Cation exchange capacity, structural properties, and hydrophobicity of samples were also determined, and the presence of the alginate has no significant influence on investigated properties of samples. Experiments on wastewater from tailings of lead and zinc mine Grot, Serbia, showed that after treatment with both adsorbents, the content of the most abundant heavy metals (Pb, Zn, Hg, and Mn) significantly decreased.
PB  - MDPI, Basel
T2  - Minerals
T1  - Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions
IS  - 1
VL  - 8
DO  - 10.3390/min8010011
UR  - conv_817
ER  - 

@article{
author = "Kragović, Milan and Pasalić, Snežana and Marković, Marija and Petrović, Marija and Nedeljković, Blagoje and Momcilović, Miloš and Stojmenović, Marija",
year = "2018",
abstract = "In present paper, the influence of the initial pH and concentration of Pb2+ on its adsorption by the natural (NZA) and Fe(III)-modified zeolite-alginate beads (FeA) was studied. Results showed that modification of the starting materials have a positive effect on their adsorption capacities (102 and 136 mg/g for the NZA and FeA, respectively). After encapsulation, the mechanism of lead adsorption by both adsorbents was changed and ion exchange dominates. The best adsorption was achieved for initial pH > 3.8. Cation exchange capacity, structural properties, and hydrophobicity of samples were also determined, and the presence of the alginate has no significant influence on investigated properties of samples. Experiments on wastewater from tailings of lead and zinc mine Grot, Serbia, showed that after treatment with both adsorbents, the content of the most abundant heavy metals (Pb, Zn, Hg, and Mn) significantly decreased.",
publisher = "MDPI, Basel",
journal = "Minerals",
title = "Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions",
number = "1",
volume = "8",
doi = "10.3390/min8010011",
url = "conv_817"
}

Kragović, M., Pasalić, S., Marković, M., Petrović, M., Nedeljković, B., Momcilović, M.,& Stojmenović, M.. (2018). Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions. in Minerals
MDPI, Basel., 8(1).
https://doi.org/10.3390/min8010011
conv_817

Kragović M, Pasalić S, Marković M, Petrović M, Nedeljković B, Momcilović M, Stojmenović M. Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions. in Minerals. 2018;8(1).
doi:10.3390/min8010011
conv_817 .

Kragović, Milan, Pasalić, Snežana, Marković, Marija, Petrović, Marija, Nedeljković, Blagoje, Momcilović, Miloš, Stojmenović, Marija, "Natural and Modified Zeolite-Alginate Composites. Application for Removal of Heavy Metal Cations from Contaminated Water Solutions" in Minerals, 8, no. 1 (2018),
https://doi.org/10.3390/min8010011 .,
conv_817 .