Heavy and toxic metal uptake by mesoporous hypercrosslinked SMA beads: Isotherms and kinetics

Renuka Gonte, K. Balasubramanian
2016 Journal of Saudi Chemical Society  
Hypercrosslinked styrene-maleic acid copolymer beads were used for the removal of metal ions from mimicked industrial effluents. The polymer was characterized by SEM which revealed the presence of a porous network. Carboxyl acid groups of the polymer were identified as active sites for metal uptake. Highly porous surface enhanced metal ion uptake was achieved through a physicochemical process. Equilibrium sorption of metal ions was best described by the Freundlich and Temkin model with R 2 >
more » ... 9. Adsorption followed pseudo first and pseudo second order reaction kinetics. Intraparticle diffusion model suggested a three step equilibrium. Desorption was a fast process with $90% in 60 min. ª 2013 Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
doi:10.1016/j.jscs.2013.04.003 fatcat:d4fplwrvrnfhthgrjvgfi6ihzy