TY  - JOUR
AU  - Stanković, S.
AU  - Šoštarić, Tatjana
AU  - Bugarčić, Mladen
AU  - Janićijević, A.
AU  - Pantović-Spajić, Katarina
AU  - Lopičić, Zorica
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/514
AB  - Annual production of the sunflower seed in Serbia is between 650,000-720,000 tons. Most of this amount is used in vegetable oil industry. Abundant by-products from this processing are sunflower seed husks. Husks are usually incinerated by vegetable oil producers in order to obtain energy, used as an animal feed, or, unfortunately, landed up at some landfills. In order to promote new, added value for this abundant, renewable resource, the investigation presented in this paper was conducted. For that purpose, adsorption of Cu(II) ions from synthetic solution by unmodified sunflower seed husks was examined. ATR-FTIR was used to identify functional groups as potential active sites for Cu(II) sorption. Zeta potential values were determined to reveal the surface charge, while the cation exchange capacity (CEC) was determined to reveal the amount of exchangeable ions on its surface. ATR-FTIR analysis revealed the presence of specific functional groups (hydroxyl, carboxyl, carbonyl, and amine) responsible for removal of Cu(II) ions. The total CEC of sunflower husk is 47.74 meq/100g and Ca(II) and Mg(II) ions are in dominant exchangeable positions. The study of ion-exchange mechanism involvement was done and results confirmed that this mechanism is not the only mechanism which is involved in copper sorption. Also, the results show that the Cu(II) ions have preference for Mg(II) ions substitution. Sorption experiments were conducted in batch system. The effect of operating parameters (pH, contact time, initial concentration of Cu(II) ions and adsorbent dosage) on the adsorption capacity were investigated. The obtained experimental data were fitted by Langmuir and Freundlich isotherm models. The maximum adsorption capacity for Cu(II) ions calculated from Langmuir adsorption isotherm was 34.89 mg/g which is 15 to 35% higher than the capacity that other researchers reported previously for the same material and pollutant. These results are suggesting that sunflower seed husks have a potential to be applied as an effective adsorbent of copper ions from contaminated waters.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta Periodica Technologica
T1  - Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks
EP  - 277
SP  - 268
VL  - 50
DO  - 10.2298/APT1950268S
UR  - conv_1024
ER  - 

@article{
author = "Stanković, S. and Šoštarić, Tatjana and Bugarčić, Mladen and Janićijević, A. and Pantović-Spajić, Katarina and Lopičić, Zorica",
year = "2019",
abstract = "Annual production of the sunflower seed in Serbia is between 650,000-720,000 tons. Most of this amount is used in vegetable oil industry. Abundant by-products from this processing are sunflower seed husks. Husks are usually incinerated by vegetable oil producers in order to obtain energy, used as an animal feed, or, unfortunately, landed up at some landfills. In order to promote new, added value for this abundant, renewable resource, the investigation presented in this paper was conducted. For that purpose, adsorption of Cu(II) ions from synthetic solution by unmodified sunflower seed husks was examined. ATR-FTIR was used to identify functional groups as potential active sites for Cu(II) sorption. Zeta potential values were determined to reveal the surface charge, while the cation exchange capacity (CEC) was determined to reveal the amount of exchangeable ions on its surface. ATR-FTIR analysis revealed the presence of specific functional groups (hydroxyl, carboxyl, carbonyl, and amine) responsible for removal of Cu(II) ions. The total CEC of sunflower husk is 47.74 meq/100g and Ca(II) and Mg(II) ions are in dominant exchangeable positions. The study of ion-exchange mechanism involvement was done and results confirmed that this mechanism is not the only mechanism which is involved in copper sorption. Also, the results show that the Cu(II) ions have preference for Mg(II) ions substitution. Sorption experiments were conducted in batch system. The effect of operating parameters (pH, contact time, initial concentration of Cu(II) ions and adsorbent dosage) on the adsorption capacity were investigated. The obtained experimental data were fitted by Langmuir and Freundlich isotherm models. The maximum adsorption capacity for Cu(II) ions calculated from Langmuir adsorption isotherm was 34.89 mg/g which is 15 to 35% higher than the capacity that other researchers reported previously for the same material and pollutant. These results are suggesting that sunflower seed husks have a potential to be applied as an effective adsorbent of copper ions from contaminated waters.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta Periodica Technologica",
title = "Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks",
pages = "277-268",
volume = "50",
doi = "10.2298/APT1950268S",
url = "conv_1024"
}

Stanković, S., Šoštarić, T., Bugarčić, M., Janićijević, A., Pantović-Spajić, K.,& Lopičić, Z.. (2019). Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks. in Acta Periodica Technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 50, 268-277.
https://doi.org/10.2298/APT1950268S
conv_1024

Stanković S, Šoštarić T, Bugarčić M, Janićijević A, Pantović-Spajić K, Lopičić Z. Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks. in Acta Periodica Technologica. 2019;50:268-277.
doi:10.2298/APT1950268S
conv_1024 .

Stanković, S., Šoštarić, Tatjana, Bugarčić, Mladen, Janićijević, A., Pantović-Spajić, Katarina, Lopičić, Zorica, "Adsorption of Cu(II) ions from synthetic solution by sunflower seed husks" in Acta Periodica Technologica, 50 (2019):268-277,
https://doi.org/10.2298/APT1950268S .,
conv_1024 .

TY  - JOUR
AU  - Pantović-Spajić, Katarina
AU  - Sakan, S.
AU  - Đorđević, D.
AU  - Šoštarić, Tatjana
AU  - Lopičić, Zorica
AU  - Janićijević, A.
AU  - Stojanović, Ksenija
PY  - 2019
UR  - https://ritnms.itnms.ac.rs/handle/123456789/505
AB  - The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta Periodica Technologica
T1  - Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia
EP  - 196
SP  - 189
VL  - 50
DO  - 10.2298/APT1950189P
UR  - conv_1023
ER  - 

@article{
author = "Pantović-Spajić, Katarina and Sakan, S. and Đorđević, D. and Šoštarić, Tatjana and Lopičić, Zorica and Janićijević, A. and Stojanović, Ksenija",
year = "2019",
abstract = "The purpose of this paper was to investigate the effectiveness of three different extraction agents for the extraction of 25 elements from sediment samples collected from 4 artificial lakes and 12 rivers in Serbia (33 samples in total). The extraction efficiency of the agents was evaluated by its ability to extract the highest quantity of the elements. For that purpose, three acids (1M HCl, 2M HNO3 and 0.43M CH3COOH) have been used. Inductively coupled plasma atomic emission spectrometry (ICP-OES) was used for quantitative determination of following elements: Al, As, B, Ba, Be, Bi, Ca, Cd, Cr, Co, Cu, Fe, Hg, K, Li, Mg, Mn, Ni, Na, Pb, Sb, Se, Sr, V, and Zn. The extraction with 1M HCl has shown the best results for the majority of investigated elements (especially Sr, Mn and Ca). Antimony (Sb) was detected only after extraction with 0.43M CH3COOOH, while selenium (Se) could not be detected when 2M HNO3 was applied as extraction agents. The present study could be very useful for choosing a suitable method for specific elements and also can be helpful in the evaluation of the contaminants in freshwater sediments in Serbia. This might contribute to environmental risk assessment of the present elements.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta Periodica Technologica",
title = "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia",
pages = "196-189",
volume = "50",
doi = "10.2298/APT1950189P",
url = "conv_1023"
}

Pantović-Spajić, K., Sakan, S., Đorđević, D., Šoštarić, T., Lopičić, Z., Janićijević, A.,& Stojanović, K.. (2019). Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad., 50, 189-196.
https://doi.org/10.2298/APT1950189P
conv_1023

Pantović-Spajić K, Sakan S, Đorđević D, Šoštarić T, Lopičić Z, Janićijević A, Stojanović K. Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia. in Acta Periodica Technologica. 2019;50:189-196.
doi:10.2298/APT1950189P
conv_1023 .

Pantović-Spajić, Katarina, Sakan, S., Đorđević, D., Šoštarić, Tatjana, Lopičić, Zorica, Janićijević, A., Stojanović, Ksenija, "Comparison of extraction agents for metal determination in sediments from artificial lakes and rivers in Serbia" in Acta Periodica Technologica, 50 (2019):189-196,
https://doi.org/10.2298/APT1950189P .,
conv_1023 .