Cellulose-based anion exchanger with tertiary amine functionality for the extraction of arsenic(V) from aqueous media

Journal of Environmental Management
T S Anirudhan, S Jalajamony

Abstract

A novel cellulose-based anion exchanger (Cell-AE) with tertiary amine functionality was synthesized by graft polymerization reaction of cellulose and glycidyl methacrylate using N,N'-methylene-bis-acrylamide as a crosslinker and benzoyl peroxide as an initiator, followed by dimethylamine (amination) and acid (HCl) treatment. The chemical modification was confirmed by infrared spectroscopy and CHN analysis. The anion exchanger was used in batch processes to study AS(V) adsorption in solutions. The operating variables studied were pH, contact time, initial As(V) concentration, sorbent mass, and ionic strength. The process was affected by solution pH with an optimum adsorption occurring at pH 6.0. Adsorption equilibrium was achieved within 1 h. Increasing ionic strength of solution negatively affected the arsenic uptake. The adsorption process performed more than 99.0% of As(V) removal from an initial concentration of 25.0 mg/L. The process of adsorption followed pseudo-second-order kinetics. The adsorption equilibrium isotherm data were analyzed using the Langmuir, Freundlich, Redlich-Peterson and Langmuir-Freundlich equations. The Langmuir-Freundlich isotherm described the adsorption data over the concentration range 25-400 mg/L...Continue Reading

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Citations

Jan 18, 2012·Journal of Environmental Management·Qin LiJianping Zhai
Jan 7, 2015·Environmental Science and Pollution Research International·Aminul IslamSuneel Kumar
Oct 14, 2018·Environmental Science and Pollution Research International·Serdar KorpayevPınar Akkaş Kavaklı
May 18, 2020·Journal of Colloid and Interface Science·Amanda Raimundi PereiraLeandro Vinícius Alves Gurgel
Jun 13, 2020·Ecotoxicology and Environmental Safety·Kovo G Akpomie, Jeanet Conradie

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