Sorption efficiency of three novel extractant-impregnated resins containing vesuvin towards Pb(II) ion: Effect of nitrate and amine functionalization of resin backbone
A macroporous polymeric resin, Amberlite XAD-1160, and its nitrate and amine functionalized versions were impregnated with vesuvin.
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The sorption properties of these novel extractant-impregnated resins toward Pb(II) ion were compared with each others.
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The effects of several physiochemical parameters were investigated.
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The adsorption kinetics, isotherms and thermodynamic studies were used to explain the sorption mechanisms.
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The results showed that VSV/NO2-XAD-1160 benefits for application in full-scale treatment processes are more than those of other EIRs.
Abstract
A macroporous polymeric resin, Amberlite XAD-1160, functionalized with −NO2(electron-acceptor) and −NH2(electron-donor) groups to prepare two new functional macroporous resins, NO2-XAD-1160 and NH2-XAD-1160 respectively, and three novel extractant-impregnated resins (EIRs) were prepared by impregnating XAD-1160, NO2-XAD-1160 and NH2-XAD-1160 with vesuvin, as an advantageous extractant. The sorption efficiencies of both VSV/NO2-XAD-1160 and VSV/NH2-XAD-1160 towards Pb(II) ion were compared with those of conventional VSV/XAD-1160 to gain insight about the effects of functional groups on the kinetics, equilibrium, thermodynamic and other sorption properties. Comparative studies showed that VSV/NO2-XAD-1160 benefits for using in full-scale treatment processes are more than those of VSV/XAD-1160 and VSV/NH2-XAD-1160.
