Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite
Autori
Kragović, Milan M.Stojmenović, Marija
Petrović, Jelena T.
Loredo, Jorge
Pašalić, Snežana
Nedeljković, Andrijana
Ristović, Ivica
Konferencijski prilog (Objavljena verzija)
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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 KNO 3 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 o 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 i...nitial 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. © 2019 The Authors.
Ključne reči:
natural zeolite / Fe(III)-modified zeolite / encapsulation by alginate / point of zero charge / lead removal / thermodynamicIzvor:
Procedia Manufacturing, 2019, 32, 286-293Finansiranje / projekti:
- Osvajanje tehnoloških postupaka dobijanja ekoloških materijala na bazi nemetaličnih mineralnih sirovina (RS-MESTD-Technological Development (TD or TR)-34013)
- Porozni materijali na bazi oksida u zaštiti životne sredine od genotoksičnih supstanci (RS-MESTD-Basic Research (BR or ON)-172018)
- Unapređenje tehnologije površinske eksploatacije lignita u cilju povećanja energetske efikasnosti, sigurnosti i zaštite na radu (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
URI
https://linkinghub.elsevier.com/retrieve/pii/S2351978919302513https://vinar.vin.bg.ac.rs/handle/123456789/8198
Kolekcije
Institucija/grupa
VinčaTY - CONF AU - Kragović, Milan M. AU - Stojmenović, Marija AU - Petrović, Jelena T. AU - Loredo, Jorge AU - Pašalić, Snežana AU - Nedeljković, Andrijana AU - Ristović, Ivica PY - 2019 UR - https://linkinghub.elsevier.com/retrieve/pii/S2351978919302513 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8198 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 KNO 3 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 o 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. © 2019 The Authors. C3 - Procedia Manufacturing T1 - Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite VL - 32 SP - 286 EP - 293 DO - 10.1016/j.promfg.2019.02.216 ER -
@conference{ author = "Kragović, Milan M. and Stojmenović, Marija and Petrović, Jelena T. and Loredo, Jorge and Pašalić, 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 KNO 3 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 o 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. © 2019 The Authors.", journal = "Procedia Manufacturing", title = "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite", volume = "32", pages = "286-293", doi = "10.1016/j.promfg.2019.02.216" }
Kragović, M. M., Stojmenović, M., Petrović, J. T., Loredo, J., Pašalić, S., Nedeljković, A.,& Ristović, I.. (2019). Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing, 32, 286-293. https://doi.org/10.1016/j.promfg.2019.02.216
Kragović MM, Stojmenović M, Petrović JT, Loredo J, Pašalić S, Nedeljković A, Ristović I. Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing. 2019;32:286-293. doi:10.1016/j.promfg.2019.02.216 .
Kragović, Milan M., Stojmenović, Marija, Petrović, Jelena T., Loredo, Jorge, Pašalić, Snežana, Nedeljković, Andrijana, Ristović, Ivica, "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite" in Procedia Manufacturing, 32 (2019):286-293, https://doi.org/10.1016/j.promfg.2019.02.216 . .