Hemijska industrija 2012 Volume 66, Issue 6, Pages: 795-804
https://doi.org/10.2298/HEMIND121002112M
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Kinetic modeling of heavy metal sorption by vinyl pyridine based copolymer
Maksin Danijela D. (Vinča Institute of Nuclear Sciences, Belgrade)
Kljajević Slađana O. (ICTM -Center for Chemistry, Polymer Department, Belgrade)
Đolić Maja B. (Vinča Institute of Nuclear Sciences, Belgrade)
Marković Jelena P. (Vinča Institute of Nuclear Sciences, Belgrade)
Ekmeščić Bojana M. (ICTM -Center for Chemistry, Polymer Department, Belgrade)
Onjia Antonije E. (Vinča Institute of Nuclear Sciences, Belgrade)
Nastasović Aleksandra B. (ICTM -Center for Chemistry, Polymer Department, Belgrade)
Commercial macroporous poly(4-vinylpyridine-co-divinylbenzene) [P4VPD], known
as REILLEX-425 was characterized by mercury porosimetry, nitrogen
physisorption, Fourier transformed infrared (FTIR) spectroscopy and elemental
analysis. Sorption rates of P4VPD for Cu(II), Co(II) and Cr(VI) ions were
determined in static non-competitive experiments, at room temperature (298
K). Rapid sorption was observed, especially for Co(II), with half time, t1/2,
of 1.5 min and high experimental maximal capacity, Qmax, of 3.08 mmol g-1.
Four kinetic models (pseudo-first and pseudo-second order model,
intraparticle diffusion and Boyd model) were used for analyzing metal
sorption by P4VPD. Metal ions sorption is well represented by the
pseudo-second-order model, with definite influence of pore and film diffusion
on sorption rates.
Keywords: poly(4-vinylpyridine-co-divinylbenzene) macroporous copolymer, Cu(II), Co(II) and Cr(VI) ions sorption, kinetic models
Projekat Ministarstva nauke Republike Srbije, br.
III43009