Open AccessKinetic modeling of heavy metal sorption by vinyl pyridine based copolymer
Author(s) -
Danijela D. Maksin,
Sladjana Kljajevic,
Maja Djolić,
Jelena Marković,
Bojana Ekmescic,
Antonije Onjia,
Aleksandra Nastasović
Publication year - 2012
Publication title -
hemijska industrija
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 19
eISSN - 2217-7426
pISSN - 0367-598X
DOI - 10.2298/hemind121002112m
Subject(s) - sorption , physisorption , fourier transform infrared spectroscopy , metal ions in aqueous solution , diffusion , porosimetry , chemistry , metal , analytical chemistry (journal) , materials science , chemical engineering , adsorption , porosity , chromatography , organic chemistry , thermodynamics , porous medium , physics , engineering
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. [Projekat Ministarstva nauke Republike Srbije, br. III43009
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