Journal :   Asian Journal of Research in Chemistry

Volume No. :   8

Issue No. :  4

Year :  2015

Pages :   241-252

ISSN Print :  0974-4169

ISSN Online :  0974-4150


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Removal of Bentonite from Raw water by Novel Coagulant Based on Chitosan and Tannin

Address:   Hassan T. Abdulsahib, Abdulamir H. Taobi and Salah Sh. Hashim
Department of Chemistry, Science College University of Basrah, Basrah, Iraq
*Corresponding Author
DOI No: 10.5958/0974-4150.2015.00042.5

Polymer based on chitosan and tannin have been prepared and characterized using FTIR, UV, GC-Mass, X-ray spectra DSC and TG. All characterization techniques confirm the existence of chitosan and tannin. The effectiveness of chitosan-tannin polymer as a coagulant flocculant in treatment of surface water has been studied. Tests were carried out in laboratory on two kinds of water. The first one is synthesis water mixed with high and low concentrations of bentonite, simulating thus turbid water. The second one is raw water from the treatment station of Shatt Al-Arab River. The performance of coagulation flocculation process has been assessed by measuring the supernatant turbidity for different pH, doses and flocculation time of chitosan-tannin polymer. The obtained results show that chitosan-tannin polymer effectiveness was strongly dependent on pH and the doses of chitosan-tannin polymer, on the initial turbidity and on the water quality.
Chitosan, Tannin, Bentonite, adsorption.
Hassan T. Abdulsahib, Abdulamir H. Taobi, Salah Sh. Hashim. Removal of Bentonite from Raw water by Novel Coagulant Based on Chitosan and Tannin. Asian J. Research Chem 8(4): April 2015; Page 241-252.
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