Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
Само за регистроване кориснике
2017
Аутори
Marković, BojanaStefanović, Ivan
Hercigonja, Radmila
Pergal, Marija
Markovic, Jelena P.
Onjia, Antonije E.
Nastasović, Aleksandra
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorptio...n (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed.
Кључне речи:
macroporous crosslinked copolymer / Cr(VI) / hexamethylene diamine / kinetic models / thermodynamicsИзвор:
Polymer International, 2017, 66, 5, 679-689Издавач:
- Wiley, Hoboken
Финансирање / пројекти:
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-43009)
- Синтеза и карактеризација нових функционалних полимера и полимерних нанокомпозита (RS-MESTD-Basic Research (BR or ON)-172062)
- Порозни материјали на бази оксида у заштити животне средине од генотоксичних супстанци (RS-MESTD-Basic Research (BR or ON)-172018)
DOI: 10.1002/pi.5306
ISSN: 0959-8103
WoS: 000398731200009
Scopus: 2-s2.0-85007576495
Институција/група
IHTMTY - JOUR AU - Marković, Bojana AU - Stefanović, Ivan AU - Hercigonja, Radmila AU - Pergal, Marija AU - Markovic, Jelena P. AU - Onjia, Antonije E. AU - Nastasović, Aleksandra PY - 2017 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2223 AB - Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed. PB - Wiley, Hoboken T2 - Polymer International T1 - Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions VL - 66 IS - 5 SP - 679 EP - 689 DO - 10.1002/pi.5306 ER -
@article{ author = "Marković, Bojana and Stefanović, Ivan and Hercigonja, Radmila and Pergal, Marija and Markovic, Jelena P. and Onjia, Antonije E. and Nastasović, Aleksandra", year = "2017", abstract = "Macroporous copolymers of poly[(glycidyl methacrylate)-co-(ethylene glycol dimethacrylate)] (PGME) with various crosslinker (ethylene glycol dimethacrylate) concentrations and porosity parameters and additionally functionalized with hexamethylene diamine (PGME-HD) were tested as potential Cr(VI) oxyanion sorbents from aqueous solutions. Kinetics of Cr(VI) sorption was investigated in the temperature range 298-343 K and the results were fitted to chemical reaction and particle diffusion models. The Cr(VI) sorption obeys the pseudo-second-order model with definite influence of pore diffusion. A temperature rise promotes chromium removal, with a maximum experimental uptake capacity of 4.21 mmol g(-1) at 343 K for the sample with the highest amino group concentration. Equilibrium data were analysed with Langmuir, Freundlich and Temkin adsorption isotherm models. Thermodynamic parameters, i.e. Gibbs free energy (G(0)), enthalpy (H-0) and entropy change (S-0) and activation energy of sorption (E-a), were calculated. The Cr(VI) adsorption onto PGME-HD was found to be spontaneous and endothermic, with increased randomness in the system. Desorption experiments show that chromium anion sorption was reversible and the PGME-HD sample GMA 60 HD was easily regenerated with 0.1 mol L-1 NaOH up to 90% recovery in the fourth sorption/desorption cycle. In the fifth cycle, a substantial sorption loss of 37% was observed.", publisher = "Wiley, Hoboken", journal = "Polymer International", title = "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions", volume = "66", number = "5", pages = "679-689", doi = "10.1002/pi.5306" }
Marković, B., Stefanović, I., Hercigonja, R., Pergal, M., Markovic, J. P., Onjia, A. E.,& Nastasović, A.. (2017). Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International Wiley, Hoboken., 66(5), 679-689. https://doi.org/10.1002/pi.5306
Marković B, Stefanović I, Hercigonja R, Pergal M, Markovic JP, Onjia AE, Nastasović A. Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions. in Polymer International. 2017;66(5):679-689. doi:10.1002/pi.5306 .
Marković, Bojana, Stefanović, Ivan, Hercigonja, Radmila, Pergal, Marija, Markovic, Jelena P., Onjia, Antonije E., Nastasović, Aleksandra, "Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions" in Polymer International, 66, no. 5 (2017):679-689, https://doi.org/10.1002/pi.5306 . .