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All Journal The Journal of Pure and Applied Chemistry Research
Shoji Motomizu
Department of Chemistry, Faculty of Science, Okayama University, Tsushimanaka 3-1-1, Okayama City 700-8530, Japan
Chemical Engineering, Chemistry & Bioengineering Chemistry Materials Science & Nanotechnology Medicine & Pharmacology

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Functionalization of Chitosan with 3,4,5-Trihydroxy Benzoic Acid Moiety for The Uptake of Chromium Species Akhmad Sabarudin; Shoji Motomizu
The Journal of Pure and Applied Chemistry Research Vol 2, No 1 (2013)
Publisher : Chemistry Department, The University of Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (686.242 KB) | DOI: 10.21776/ub.jpacr.2013.002.01.136

Abstract

Chitosan-based chelating resin, the cross-linked chitosan functionalized with 3,4,5-trihydroxy benzoic acid moiety (CCTS-THBA resin), was newly synthesized and its adsorption behavior toward appropriate elements was investigated. At pH 5-9, the CCTS-THBA resin showed quantitative adsorption (87-91%) for Cr (VI), while only < 15% for Cr (III). The addition of cyclohexanediamine tetraacetic acid (CyDTA) to the samples resulted in a considerably increase of the adsorption of both chromium species. In this condition, Cr (III) is chelated with CyDTA to form anionic complexes at pH 3-5, which was then completely adsorbed on the resin by ion exchange mechanism. Similarly, the adsorption of Cr (VI) reached almost 100% in pH range of 3-6. The adsorption capacity of CCTS-THBA resin for Cr (VI) was 109 mg g-1.
Co-Authors Akhmad Sabarudin