TY  - CONF
AU  - Kragović, Milan
AU  - Daković, Aleksandra
AU  - Marković, Marija
AU  - Petković, Anđela
AU  - Sekulić, Živko
AU  - Stojanović, Mirjana
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/694
AB  - In presented paper removal of lead ions from water solutions by the natural and Fe(III)-
modified zeolite encapsulated with alginate was investigated. Experiments were performed for
the initial lead concentrations in the range from 330 to 3100 mgPb(II)/dm3 and for three
temperatures: 25, 40 and 60oC. Results showed increase of adsorbed amount of lead with
increasing temperature and the initial lead concentrations. Much better removal of lead was
obtained with Fe(III)-modified zeolite encapsulated with alginate. The maximal removed
amounts of lead obtained for highest initial concentration were: 103, 113 and 124 mg/g for NZA
and 137, 153 and 173 mg/g for FeA at 30, 40 and 60oC, respectively. Obtained results were
fitted with Freundlich and Langmuir model, and for all temperatures the best fits were obtained
with Freundlich model (R2>0.97).
PB  - Croatian Zeolite Association
C3  - 7th Slovenian-Serbian-Croatian Symposium on Zeolites
T1  - Lead removal from water solutions by natural and Fe(III)-modified zeolite encapsulated with alginate
EP  - 58
SP  - 55
ER  - 

@conference{
author = "Kragović, Milan and Daković, Aleksandra and Marković, Marija and Petković, Anđela and Sekulić, Živko and Stojanović, Mirjana",
year = "2017",
abstract = "In presented paper removal of lead ions from water solutions by the natural and Fe(III)-
modified zeolite encapsulated with alginate was investigated. Experiments were performed for
the initial lead concentrations in the range from 330 to 3100 mgPb(II)/dm3 and for three
temperatures: 25, 40 and 60oC. Results showed increase of adsorbed amount of lead with
increasing temperature and the initial lead concentrations. Much better removal of lead was
obtained with Fe(III)-modified zeolite encapsulated with alginate. The maximal removed
amounts of lead obtained for highest initial concentration were: 103, 113 and 124 mg/g for NZA
and 137, 153 and 173 mg/g for FeA at 30, 40 and 60oC, respectively. Obtained results were
fitted with Freundlich and Langmuir model, and for all temperatures the best fits were obtained
with Freundlich model (R2>0.97).",
publisher = "Croatian Zeolite Association",
journal = "7th Slovenian-Serbian-Croatian Symposium on Zeolites",
title = "Lead removal from water solutions by natural and Fe(III)-modified zeolite encapsulated with alginate",
pages = "58-55"
}

Kragović, M., Daković, A., Marković, M., Petković, A., Sekulić, Ž.,& Stojanović, M.. (2017). Lead removal from water solutions by natural and Fe(III)-modified zeolite encapsulated with alginate. in 7th Slovenian-Serbian-Croatian Symposium on Zeolites
Croatian Zeolite Association., 55-58.

Kragović M, Daković A, Marković M, Petković A, Sekulić Ž, Stojanović M. Lead removal from water solutions by natural and Fe(III)-modified zeolite encapsulated with alginate. in 7th Slovenian-Serbian-Croatian Symposium on Zeolites. 2017;:55-58..

Kragović, Milan, Daković, Aleksandra, Marković, Marija, Petković, Anđela, Sekulić, Živko, Stojanović, Mirjana, "Lead removal from water solutions by natural and Fe(III)-modified zeolite encapsulated with alginate" in 7th Slovenian-Serbian-Croatian Symposium on Zeolites (2017):55-58.

TY  - CONF
AU  - Marković, Marija
AU  - Daković, Aleksandra
AU  - Rottinghaus, George E.
AU  - Petković, Anđela
AU  - Mercurio, Mariano
AU  - de Gennaro, Bruno
AU  - Langella, Alessio
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/692
AB  - Two different surfactants, cetylpyridinum chloride (CP) and
hexadecyltrimethylammonium bromide (HDTMA) were used to modify the surface of a natural
zeolite - phillipsite (PHI) and adsorption of ochratoxin A (OCHRA) was investigated.
Adsorption experiments were done with different amounts of adsorbents and with different
initial OCHRA concentrations at pH 3 and pH 7. Results showed that modification of phillipsite
surface with CP and HDTMA significantly improved adsorption of OCHRA in comparison to
unmodified phillipsite. CP modified phillipsite showed similar adsorption behavior as HDTMA
modified phillipsite. The highest adsorption capacity for OCHRA was obtained with CP
modified phillipsite at pH 3.
PB  - Croatian Zeolite Association
C3  - 7th Slovenian-Serbian-Croatian Symposium on Zeolites
T1  - Adsorption of ochratoxin A by surfactant modified phillipsite
EP  - 106
SP  - 103
ER  - 

@conference{
author = "Marković, Marija and Daković, Aleksandra and Rottinghaus, George E. and Petković, Anđela and Mercurio, Mariano and de Gennaro, Bruno and Langella, Alessio",
year = "2017",
abstract = "Two different surfactants, cetylpyridinum chloride (CP) and
hexadecyltrimethylammonium bromide (HDTMA) were used to modify the surface of a natural
zeolite - phillipsite (PHI) and adsorption of ochratoxin A (OCHRA) was investigated.
Adsorption experiments were done with different amounts of adsorbents and with different
initial OCHRA concentrations at pH 3 and pH 7. Results showed that modification of phillipsite
surface with CP and HDTMA significantly improved adsorption of OCHRA in comparison to
unmodified phillipsite. CP modified phillipsite showed similar adsorption behavior as HDTMA
modified phillipsite. The highest adsorption capacity for OCHRA was obtained with CP
modified phillipsite at pH 3.",
publisher = "Croatian Zeolite Association",
journal = "7th Slovenian-Serbian-Croatian Symposium on Zeolites",
title = "Adsorption of ochratoxin A by surfactant modified phillipsite",
pages = "106-103"
}

Marković, M., Daković, A., Rottinghaus, G. E., Petković, A., Mercurio, M., de Gennaro, B.,& Langella, A.. (2017). Adsorption of ochratoxin A by surfactant modified phillipsite. in 7th Slovenian-Serbian-Croatian Symposium on Zeolites
Croatian Zeolite Association., 103-106.

Marković M, Daković A, Rottinghaus GE, Petković A, Mercurio M, de Gennaro B, Langella A. Adsorption of ochratoxin A by surfactant modified phillipsite. in 7th Slovenian-Serbian-Croatian Symposium on Zeolites. 2017;:103-106..

Marković, Marija, Daković, Aleksandra, Rottinghaus, George E., Petković, Anđela, Mercurio, Mariano, de Gennaro, Bruno, Langella, Alessio, "Adsorption of ochratoxin A by surfactant modified phillipsite" in 7th Slovenian-Serbian-Croatian Symposium on Zeolites (2017):103-106.

TY  - JOUR
AU  - Marković, Marija
AU  - Daković, Aleksandra
AU  - Rottinghaus, George E.
AU  - Petković, Anđela
AU  - Kragović, Milan
AU  - Krajišnik, Danina
AU  - Milić, Jela
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/438
AB  - Benzalkonium chloride - BC (the mixture of alkylbenzyldimethylammonium chlorides containing the alkyl groups having chain lengths of C8 to C18 and benzyl functional group) was used as a surfactant for production of organozeolites (BZs). The natural zeolite - clinoptilolite was modified with three different levels (2, 5 and 10 mmol/100 g) of BC. FTIR spectroscopy, thermal analysis, zeta potential measurements, determination of the point of zero charge and BET were used to determine the quantity of the surfactant at the zeolitic surface. The main aim was to investigate adsorption properties of BZs towards ochratoxin A (OCHRA) and zearalenone (ZEN) under in vitro conditions. Results showed that adsorption of OCHRA and ZEN by BZs increased with increasing amounts of BC at the zeolitic surface but the adsorption mechanism was different. Adsorption of OCHRA by BZs followed nonlinear isotherms at pH 3 and 7, and higher adsorption capacity was observed at pH 3. This indicates that adsorption was dependent on the form of OCHRA in solution and that the sites at the uncovered zeolitic surface together with the surfactants contributed to OCHRA adsorption. Adsorption of ZEN by BZs showed linear isotherms at pH 3 and 7 and similar amounts were adsorbed at both pH values. This suggests that adsorption is practically independent of the form of ZEN in solution and that organic cations at the zeolitic surface are the active sites relevant for ZEN adsorption.
PB  - Elsevier, Amsterdam
T2  - Colloids and Surfaces A-Physicochemical and Engineering Aspects
T1  - Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride
EP  - 17
SP  - 7
VL  - 529
DO  - 10.1016/j.colsurfa.2017.05.054
UR  - conv_802
ER  - 

@article{
author = "Marković, Marija and Daković, Aleksandra and Rottinghaus, George E. and Petković, Anđela and Kragović, Milan and Krajišnik, Danina and Milić, Jela",
year = "2017",
abstract = "Benzalkonium chloride - BC (the mixture of alkylbenzyldimethylammonium chlorides containing the alkyl groups having chain lengths of C8 to C18 and benzyl functional group) was used as a surfactant for production of organozeolites (BZs). The natural zeolite - clinoptilolite was modified with three different levels (2, 5 and 10 mmol/100 g) of BC. FTIR spectroscopy, thermal analysis, zeta potential measurements, determination of the point of zero charge and BET were used to determine the quantity of the surfactant at the zeolitic surface. The main aim was to investigate adsorption properties of BZs towards ochratoxin A (OCHRA) and zearalenone (ZEN) under in vitro conditions. Results showed that adsorption of OCHRA and ZEN by BZs increased with increasing amounts of BC at the zeolitic surface but the adsorption mechanism was different. Adsorption of OCHRA by BZs followed nonlinear isotherms at pH 3 and 7, and higher adsorption capacity was observed at pH 3. This indicates that adsorption was dependent on the form of OCHRA in solution and that the sites at the uncovered zeolitic surface together with the surfactants contributed to OCHRA adsorption. Adsorption of ZEN by BZs showed linear isotherms at pH 3 and 7 and similar amounts were adsorbed at both pH values. This suggests that adsorption is practically independent of the form of ZEN in solution and that organic cations at the zeolitic surface are the active sites relevant for ZEN adsorption.",
publisher = "Elsevier, Amsterdam",
journal = "Colloids and Surfaces A-Physicochemical and Engineering Aspects",
title = "Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride",
pages = "17-7",
volume = "529",
doi = "10.1016/j.colsurfa.2017.05.054",
url = "conv_802"
}

Marković, M., Daković, A., Rottinghaus, G. E., Petković, A., Kragović, M., Krajišnik, D.,& Milić, J.. (2017). Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride. in Colloids and Surfaces A-Physicochemical and Engineering Aspects
Elsevier, Amsterdam., 529, 7-17.
https://doi.org/10.1016/j.colsurfa.2017.05.054
conv_802

Marković M, Daković A, Rottinghaus GE, Petković A, Kragović M, Krajišnik D, Milić J. Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride. in Colloids and Surfaces A-Physicochemical and Engineering Aspects. 2017;529:7-17.
doi:10.1016/j.colsurfa.2017.05.054
conv_802 .

Marković, Marija, Daković, Aleksandra, Rottinghaus, George E., Petković, Anđela, Kragović, Milan, Krajišnik, Danina, Milić, Jela, "Ochratoxin A and zearalenone adsorption by the natural zeolite treated with benzalkonium chloride" in Colloids and Surfaces A-Physicochemical and Engineering Aspects, 529 (2017):7-17,
https://doi.org/10.1016/j.colsurfa.2017.05.054 .,
conv_802 .

TY  - JOUR
AU  - Marković, Marija
AU  - Daković, Aleksandra
AU  - Rottinghaus, George E.
AU  - Kragović, Milan
AU  - Petković, Anđela
AU  - Krajišnik, Danina
AU  - Milić, Jela
AU  - Mercurio, Mariano
AU  - de Gennaro, Bruno
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/430
AB  - In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73 mg/g for organoclinoptilolite and 6.86 mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98 mg/g for organoclinoptilolite and 7.54 mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.
PB  - Elsevier, Amsterdam
T2  - Colloids and Surfaces B-Biointerfaces
T1  - Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant
EP  - 332
SP  - 324
VL  - 151
DO  - 10.1016/j.colsurfb.2016.12.033
UR  - conv_788
ER  - 

@article{
author = "Marković, Marija and Daković, Aleksandra and Rottinghaus, George E. and Kragović, Milan and Petković, Anđela and Krajišnik, Danina and Milić, Jela and Mercurio, Mariano and de Gennaro, Bruno",
year = "2017",
abstract = "In this study, organozeolites were prepared by treatment of the natural zeolites (clinoptilolite and phillipsite) with cetylpyridinium chloride (CP) equivalent to 50 and 100% of their external cation exchange capacities (ECEC). Organoclinoptilolites (ZCPs) and organophillipsites (PCPs) were characterized by FTIR spectroscopy, thermal analysis, determination of the point of zero charge and zeta potential. Adsorption of zearalenone (ZEN) by ZCPs and PCPs at pH 3 and 7 was investigated. Results showed that adsorption of ZEN increases with increasing amounts of CP at the zeolitic surfaces for both ZCPs and PCPs but the adsorption mechanism was different. Adsorption of ZEN by ZCPs followed a linear type of isotherm at pH 3 and 7 while ZEN adsorption by PCPs showed non linear (Langmuir and Freundlich) type of isotherm at both pH values. Different interactions between the ZEN molecule (or ion) and ZCPs and PCPs occurred: partition (linear isotherms) and adsorption in addition to partition (non linear isotherms), respectively. For the highest level of organic phase at the zeolitic surfaces, the maximum adsorbed amount of ZEN was 5.73 mg/g for organoclinoptilolite and 6.86 mg/g for organophillipsite at pH 3. Slightly higher adsorption: 6.98 mg/g for organoclinoptilolite and 7.54 mg/g for organophillipsite was achieved at pH 7. The results confirmed that CP ions at both zeolitic surfaces are responsible for ZEN adsorption and that organophillipsites are as effective in ZEN adsorption as organoclinoptilolites.",
publisher = "Elsevier, Amsterdam",
journal = "Colloids and Surfaces B-Biointerfaces",
title = "Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant",
pages = "332-324",
volume = "151",
doi = "10.1016/j.colsurfb.2016.12.033",
url = "conv_788"
}

Marković, M., Daković, A., Rottinghaus, G. E., Kragović, M., Petković, A., Krajišnik, D., Milić, J., Mercurio, M.,& de Gennaro, B.. (2017). Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant. in Colloids and Surfaces B-Biointerfaces
Elsevier, Amsterdam., 151, 324-332.
https://doi.org/10.1016/j.colsurfb.2016.12.033
conv_788

Marković M, Daković A, Rottinghaus GE, Kragović M, Petković A, Krajišnik D, Milić J, Mercurio M, de Gennaro B. Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant. in Colloids and Surfaces B-Biointerfaces. 2017;151:324-332.
doi:10.1016/j.colsurfb.2016.12.033
conv_788 .

Marković, Marija, Daković, Aleksandra, Rottinghaus, George E., Kragović, Milan, Petković, Anđela, Krajišnik, Danina, Milić, Jela, Mercurio, Mariano, de Gennaro, Bruno, "Adsorption of the mycotoxin zearalenone by clinoptilolite and phillipsite zeolites treated with cetylpyridinium surfactant" in Colloids and Surfaces B-Biointerfaces, 151 (2017):324-332,
https://doi.org/10.1016/j.colsurfb.2016.12.033 .,
conv_788 .

TY  - CONF
AU  - Kragović, Milan
AU  - Daković, Aleksandra
AU  - Marković, Marija
AU  - Petković, Anđela
AU  - Milojković, Jelena
AU  - Zildžović, Snežana
PY  - 2017
UR  - https://ritnms.itnms.ac.rs/handle/123456789/422
AB  - In this paper, immobilization of the natural (NZ) and Fe(III)-modified zeolite (FeZ) by Na-alginate was performed in order to improve their properties. Obtained results showed that alginate could be used for encapsulation of the natural and Fe(III)-modified zeolite in order to solve problem with water turbidity. Heavy metal cations (lead and cadmium) removal from water solutions by the natural and Fe(III)-modified zeolite with particle size:  LT 0.043 mm (NZ and FeZ) and -0.8 + 0.6 mm (NZ1 and FeZ1) and NZ or FeZ after encapsulation with alginate (NZA and FeA) was preliminarily tested. Obtained results showed that adsorbed amounts of lead as well as cadmium increased after modification of the natural zeolite with Fe(III) ions but decreased with increasing of the particle size. Adsorbed amounts for lead were: 63, 57, 133 and 101 mg/g, while for cadmium: 11, 6, 19 and 14 for NZ, NZ1, FeZ and FeZ1, respectively. After immobilization of the NZ and FeZ with alginate, adsorbed amounts of lead were 101 and 134 mg/g and for cadmium 20 and 28 mg/g for NZA and FeA, respectively indicating that modification had no negative influence on adsorption. Besides positive effect on adsorption of heavy metal cations, easy modification with alginate could solve problems with water turbidity and separation, thus these materials may be suitable for column experiments. These results suggest that encapsulated samples could find practical application in purification of water contaminated with lead and cadmium.
PB  - Amer Scientific Publishers, Valencia
C3  - Advanced Science Letters
T1  - Removal of Lead and Cadmium Ions from Aqueous Solutions by Using Natural and Modified Zeolite
EP  - 5865
IS  - 6
SP  - 5862
VL  - 23
DO  - 10.1166/asl.2017.9051
UR  - conv_821
ER  - 

@conference{
author = "Kragović, Milan and Daković, Aleksandra and Marković, Marija and Petković, Anđela and Milojković, Jelena and Zildžović, Snežana",
year = "2017",
abstract = "In this paper, immobilization of the natural (NZ) and Fe(III)-modified zeolite (FeZ) by Na-alginate was performed in order to improve their properties. Obtained results showed that alginate could be used for encapsulation of the natural and Fe(III)-modified zeolite in order to solve problem with water turbidity. Heavy metal cations (lead and cadmium) removal from water solutions by the natural and Fe(III)-modified zeolite with particle size:  LT 0.043 mm (NZ and FeZ) and -0.8 + 0.6 mm (NZ1 and FeZ1) and NZ or FeZ after encapsulation with alginate (NZA and FeA) was preliminarily tested. Obtained results showed that adsorbed amounts of lead as well as cadmium increased after modification of the natural zeolite with Fe(III) ions but decreased with increasing of the particle size. Adsorbed amounts for lead were: 63, 57, 133 and 101 mg/g, while for cadmium: 11, 6, 19 and 14 for NZ, NZ1, FeZ and FeZ1, respectively. After immobilization of the NZ and FeZ with alginate, adsorbed amounts of lead were 101 and 134 mg/g and for cadmium 20 and 28 mg/g for NZA and FeA, respectively indicating that modification had no negative influence on adsorption. Besides positive effect on adsorption of heavy metal cations, easy modification with alginate could solve problems with water turbidity and separation, thus these materials may be suitable for column experiments. These results suggest that encapsulated samples could find practical application in purification of water contaminated with lead and cadmium.",
publisher = "Amer Scientific Publishers, Valencia",
journal = "Advanced Science Letters",
title = "Removal of Lead and Cadmium Ions from Aqueous Solutions by Using Natural and Modified Zeolite",
pages = "5865-5862",
number = "6",
volume = "23",
doi = "10.1166/asl.2017.9051",
url = "conv_821"
}

Kragović, M., Daković, A., Marković, M., Petković, A., Milojković, J.,& Zildžović, S.. (2017). Removal of Lead and Cadmium Ions from Aqueous Solutions by Using Natural and Modified Zeolite. in Advanced Science Letters
Amer Scientific Publishers, Valencia., 23(6), 5862-5865.
https://doi.org/10.1166/asl.2017.9051
conv_821

Kragović M, Daković A, Marković M, Petković A, Milojković J, Zildžović S. Removal of Lead and Cadmium Ions from Aqueous Solutions by Using Natural and Modified Zeolite. in Advanced Science Letters. 2017;23(6):5862-5865.
doi:10.1166/asl.2017.9051
conv_821 .

Kragović, Milan, Daković, Aleksandra, Marković, Marija, Petković, Anđela, Milojković, Jelena, Zildžović, Snežana, "Removal of Lead and Cadmium Ions from Aqueous Solutions by Using Natural and Modified Zeolite" in Advanced Science Letters, 23, no. 6 (2017):5862-5865,
https://doi.org/10.1166/asl.2017.9051 .,
conv_821 .

TY  - CONF
AU  - Kragović, Milan
AU  - Daković, Aleksandra
AU  - Marković, Marija
AU  - Petković, Anđela
AU  - Petrović, Jelena
AU  - Stojanović, Jovica
AU  - Milojković, Jelena
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/740
AB  - In this paper, adsorption of lead ions from water solutions by thenatural
(NZA) and Fe(III)-modified zeolite-alginate (FeA) beads was investigated.
Experiments were performed for different initial concentrations and results
showed improving adsorption properties of the starting materials (natural
(NZ) and Fe(III)-modified zeolite (FeZ)) after modification with alginate.
Also, for both adsorbents, direct relation between initial concentration and
adsorbed amount of lead was observed. Much higher adsorption of lead was
obtained by FeA than NZA. Results also showed that presence of alginate,
beside improving adsorption properties have a positive influence on physical
properties of starting samples. After immobilization of the starting samples
with alginate no falling apart of the beads was noticed and there was no water
turbidity.
PB  - Belgrade : Society of Physical Chemists of Serbia
C3  - 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Using of the natural and Fe(III)-modified zeolite-alginate beads for adsorption of lead ions from water solutions
EP  - 702
SP  - 699
VL  - 2
ER  - 

@conference{
author = "Kragović, Milan and Daković, Aleksandra and Marković, Marija and Petković, Anđela and Petrović, Jelena and Stojanović, Jovica and Milojković, Jelena",
year = "2016",
abstract = "In this paper, adsorption of lead ions from water solutions by thenatural
(NZA) and Fe(III)-modified zeolite-alginate (FeA) beads was investigated.
Experiments were performed for different initial concentrations and results
showed improving adsorption properties of the starting materials (natural
(NZ) and Fe(III)-modified zeolite (FeZ)) after modification with alginate.
Also, for both adsorbents, direct relation between initial concentration and
adsorbed amount of lead was observed. Much higher adsorption of lead was
obtained by FeA than NZA. Results also showed that presence of alginate,
beside improving adsorption properties have a positive influence on physical
properties of starting samples. After immobilization of the starting samples
with alginate no falling apart of the beads was noticed and there was no water
turbidity.",
publisher = "Belgrade : Society of Physical Chemists of Serbia",
journal = "13th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Using of the natural and Fe(III)-modified zeolite-alginate beads for adsorption of lead ions from water solutions",
pages = "702-699",
volume = "2"
}

Kragović, M., Daković, A., Marković, M., Petković, A., Petrović, J., Stojanović, J.,& Milojković, J.. (2016). Using of the natural and Fe(III)-modified zeolite-alginate beads for adsorption of lead ions from water solutions. in 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Belgrade : Society of Physical Chemists of Serbia., 2, 699-702.

Kragović M, Daković A, Marković M, Petković A, Petrović J, Stojanović J, Milojković J. Using of the natural and Fe(III)-modified zeolite-alginate beads for adsorption of lead ions from water solutions. in 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2016;2:699-702..

Kragović, Milan, Daković, Aleksandra, Marković, Marija, Petković, Anđela, Petrović, Jelena, Stojanović, Jovica, Milojković, Jelena, "Using of the natural and Fe(III)-modified zeolite-alginate beads for adsorption of lead ions from water solutions" in 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2 (2016):699-702.

TY  - JOUR
AU  - Kragović, Milan
AU  - Daković, Aleksandra
AU  - Marković, Marija
AU  - Petković, Anđela
PY  - 2016
UR  - https://ritnms.itnms.ac.rs/handle/123456789/387
AB  - U ovom radu ispitivana je upotreba prirodnog i Fe(III)-modifikovanog zeolite kao aditiva alginatu u cilju poboljšanja njegovih termijskih i pirolitičkih osobina. Za tu namenu korišćeni su uzorci prirodnog (PZA) i Fe(III)-modifikovanog zeolita prekrivenih alginatom (FeA). Sagorevanje uzoraka praćeno je termijskim analitičkim tehnikama, diferencijalnom termijskom analizom (DTA) i termogravimetrijskom analizom (TGA). Uzorci su zagrevani u temperaturskom intervalu od 25 do 1000ºC pri različitim brzinama zagrevanja (od 5 do 20ºC). Na osnovu eksperimentalnih rezultata, merenjem gubitka mase, termijsko razlaganje natrijum alginata se jasno može podeliti u nekoliko koraka. Na osnovu kinetičkog modela pseudo-prvog reda određeni su kinetički parametri (aktivaciona energija i pred eksponencijalni faktor) koji se odnose na temperaturski interval od 180 do 500ºC. Dobijeni rezultati su pokazali da upotrebljeni zeoliti utiču na termijske osobine alginata kao i da smanjuju aktivacionu energiju potrebnu za njegovu pirolizu sa 87,30 kJ/mol za čist alginat na 72,75 kJ/mol za PZA i 63,35 kJ/mol za FeA. Ova ispitivanja mogu biti korisna za bolje razumevanje termijske stabilnosti alginatnih biokompozita i mogu dati informacije važne za termijske procese biorazgrađujućih materijala.
AB  - In this work, natural and Fe(III)-modified zeolte were tested as additives for alginate in order to improve its thermal and pyrolytic properties. For that purpose the natural zeolite (NZA) and Fe(III)- modified zeolite coated with alginate (FeA) were used. Thermal degradation of the samples was investigated by using thermal analytic techniques, thermogravimetric (TG) and differential thermal analysis (DTA). The samples were heated from 25oC to 1000ºC at different heating rates (from 5 to 20ºC). From experimental results, thermal degradation of the sodium alginate could be clearly separated into several stages based on the weight loss and the weight loss rate. The kinetic parameters (activation energy and pre-exponential factor) for the main degradation phase (from 180 to 500ºC) thus were estimated by using the pseudo first-order assumption. The results showed that used zeolites affected the thermal properties of the alginate and reduce activation energy required for pyrolysis from 87.30 kJ/mol for pure alginate to 72.75 kJ/mol for NZA and 63.35 kJ/mol for FeA. These pyrolysis investigations can be useful for better understanding the thermal stability of these alginate biocomposites and provide necessary information for thermally processing wastes from these biodegradable materials.
PB  - Inženjersko društvo za koroziju, Beograd
T2  - Zaštita materijala
T1  - Kinetika termijskog razlaganja kompozita alginata i zeolita
T1  - Kinetic of thermal degradation of alginate-zeolite composites
EP  - 564
IS  - 4
SP  - 559
VL  - 57
DO  - 10.5937/ZasMat1604559K
UR  - conv_149
ER  - 

@article{
author = "Kragović, Milan and Daković, Aleksandra and Marković, Marija and Petković, Anđela",
year = "2016",
abstract = "U ovom radu ispitivana je upotreba prirodnog i Fe(III)-modifikovanog zeolite kao aditiva alginatu u cilju poboljšanja njegovih termijskih i pirolitičkih osobina. Za tu namenu korišćeni su uzorci prirodnog (PZA) i Fe(III)-modifikovanog zeolita prekrivenih alginatom (FeA). Sagorevanje uzoraka praćeno je termijskim analitičkim tehnikama, diferencijalnom termijskom analizom (DTA) i termogravimetrijskom analizom (TGA). Uzorci su zagrevani u temperaturskom intervalu od 25 do 1000ºC pri različitim brzinama zagrevanja (od 5 do 20ºC). Na osnovu eksperimentalnih rezultata, merenjem gubitka mase, termijsko razlaganje natrijum alginata se jasno može podeliti u nekoliko koraka. Na osnovu kinetičkog modela pseudo-prvog reda određeni su kinetički parametri (aktivaciona energija i pred eksponencijalni faktor) koji se odnose na temperaturski interval od 180 do 500ºC. Dobijeni rezultati su pokazali da upotrebljeni zeoliti utiču na termijske osobine alginata kao i da smanjuju aktivacionu energiju potrebnu za njegovu pirolizu sa 87,30 kJ/mol za čist alginat na 72,75 kJ/mol za PZA i 63,35 kJ/mol za FeA. Ova ispitivanja mogu biti korisna za bolje razumevanje termijske stabilnosti alginatnih biokompozita i mogu dati informacije važne za termijske procese biorazgrađujućih materijala., In this work, natural and Fe(III)-modified zeolte were tested as additives for alginate in order to improve its thermal and pyrolytic properties. For that purpose the natural zeolite (NZA) and Fe(III)- modified zeolite coated with alginate (FeA) were used. Thermal degradation of the samples was investigated by using thermal analytic techniques, thermogravimetric (TG) and differential thermal analysis (DTA). The samples were heated from 25oC to 1000ºC at different heating rates (from 5 to 20ºC). From experimental results, thermal degradation of the sodium alginate could be clearly separated into several stages based on the weight loss and the weight loss rate. The kinetic parameters (activation energy and pre-exponential factor) for the main degradation phase (from 180 to 500ºC) thus were estimated by using the pseudo first-order assumption. The results showed that used zeolites affected the thermal properties of the alginate and reduce activation energy required for pyrolysis from 87.30 kJ/mol for pure alginate to 72.75 kJ/mol for NZA and 63.35 kJ/mol for FeA. These pyrolysis investigations can be useful for better understanding the thermal stability of these alginate biocomposites and provide necessary information for thermally processing wastes from these biodegradable materials.",
publisher = "Inženjersko društvo za koroziju, Beograd",
journal = "Zaštita materijala",
title = "Kinetika termijskog razlaganja kompozita alginata i zeolita, Kinetic of thermal degradation of alginate-zeolite composites",
pages = "564-559",
number = "4",
volume = "57",
doi = "10.5937/ZasMat1604559K",
url = "conv_149"
}

Kragović, M., Daković, A., Marković, M.,& Petković, A.. (2016). Kinetika termijskog razlaganja kompozita alginata i zeolita. in Zaštita materijala
Inženjersko društvo za koroziju, Beograd., 57(4), 559-564.
https://doi.org/10.5937/ZasMat1604559K
conv_149

Kragović M, Daković A, Marković M, Petković A. Kinetika termijskog razlaganja kompozita alginata i zeolita. in Zaštita materijala. 2016;57(4):559-564.
doi:10.5937/ZasMat1604559K
conv_149 .

Kragović, Milan, Daković, Aleksandra, Marković, Marija, Petković, Anđela, "Kinetika termijskog razlaganja kompozita alginata i zeolita" in Zaštita materijala, 57, no. 4 (2016):559-564,
https://doi.org/10.5937/ZasMat1604559K .,
conv_149 .