Article history: N, N, N-Triethyl ammonium functionalized cross-linked chitosan beads (TEACCB) was prepared by Received 4 December 2015 alkylation of glutaraldehyde cross-linked chitosan beads to remove nitrate from brackish water. Physico- Received in revised form 12 March 2016 chemical characteristics of TEACCB were analyzed using FTIR, SEM, EDAX, TGA, DTA, BET surface area, Accepted 24 March 2016 swelling ratio and pH . The maximum nitrate removal capacity of TEACCB was 2.26 meq/g and is higher zpc Available online 1 April 2016 than other reported chitosan based adsorbents. Nitrate removal ratio in the presence and absence of common anions like chloride and sulphate demonstrated the selectively of TEACCB towards nitrate. The Keywords: kinetic data of nitrate removal ﬁtted well with the pseudo-second-order kinetic model. The thermo- Chitosan dynamic parameters indicated that nitrate removal could be spontaneous and exothermic in nature. Nitrate TEACCB was reused with 100% efﬁciency after regenerating with 0.05 N HCl. Column study was carried Brackish water out to remove nitrate from brackish water. These results are very signiﬁcant to develop TEACCB based Column study nitrate removal technology with great efﬁciency. © 2016 Elsevier Ltd. All rights reserved. 1. Introduction Adsorption through ion exchange mechanism is an efﬁcient
Carbohydrate Polymers – Elsevier
Published: Aug 20, 2016
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