Influence of Alginate Encapsulation on Point of Zero Charge (pH(pzc)) and Thermodynamic Properties of the Natural and Fe(III) Modified Zeolite
2019
Аутори
Kragović, MilanStojmenović, Marija
Petrović, Jelena
Loredo, Jorge
Pasalić, Snežana
Nedeljković, Andrijana
Ristović, Ivica
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 increasi...ng 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.
Кључне речи:
thermodynamic / point of zero charge / natural zeolite / lead removal / Fe(III)-modified zeolite / encapsulation by alginateИзвор:
12th International Conference Interdisciplinarity in Engineering (Inter-Eng 2018), 2019, 32, 286-293Издавач:
- Elsevier Science Bv, Amsterdam
Финансирање / пројекти:
- Освајање технолошких поступака добијања еколошких материјала на бази неметаличних минералних сировина (RS-MESTD-Technological Development (TD or TR)-34013)
- Порозни материјали на бази оксида у заштити животне средине од генотоксичних супстанци (RS-MESTD-Basic Research (BR or ON)-172018)
- Унапређење технологије површинске експлоатације лигнита у циљу повећања енергетске ефикасности, сигурности и заштите на раду (RS-MESTD-Technological Development (TD or TR)-33039)
DOI: 10.1016/j.promfg.2019.02.216
ISSN: 2351-9789
WoS: 000471295800041
Scopus: 2-s2.0-85065656635
Институција/група
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - 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 .