Novel hexamethylene diamine-functionalized macroporous copolymer for chromium removal from aqueous solutions
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2017
Authors
Marković, Bojana
Stefanović, Ivan

Hercigonja, Radmila
Pergal, Marija

Markovic, Jelena P.

Onjia, Antonije E.

Nastasović, Aleksandra

Article (Published version)

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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.
Keywords:
macroporous crosslinked copolymer / Cr(VI) / hexamethylene diamine / kinetic models / thermodynamicsSource:
Polymer International, 2017, 66, 5, 679-689Publisher:
- Wiley, Hoboken
Funding / projects:
- Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden (RS-43009)
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-172062)
- Oxide-based environmentally-friendly porous materials for genotoxic substances removal (RS-172018)
DOI: 10.1002/pi.5306
ISSN: 0959-8103
WoS: 000398731200009
Scopus: 2-s2.0-85007576495
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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 . .