Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/26832
Title: Enhancing the adsorption capacities of acid dyes by chitosan nano particles
Authors: Cheung, WH
Szeto, YS 
McKay, G
Keywords: Acid dyes
Adsorption
Chitosan
Nanochitosan
Issue Date: 2009
Publisher: Elsevier
Source: Bioresource technology, 2009, v. 100, no. 3, p. 1143-1148 How to cite?
Journal: Bioresource technology 
Abstract: In the present study, nanochitosan emulsion has been produced in a suspension form by adding tripolyphosphate solution into a chitosan solution drop-wise. The adsorption capacities of four acid dyes, namely, Acid Orange 10 (AO10), Acid Orange 12 (AO12), Acid Red 18 (AR18) and Acid Red 73 (AR73) on nanochitosan, have been determined to be 1.77, 4.33, 1.37 and 2.13 mmol l-1, respectively. The nanochitosan dye capacities were compared with normal chitosan capacities which were 1.54, 2.66, 1.11 and 1.25 mmol l-1 for AO10, AO12, AR18 and AR73, respectively. In all cases, the nanochitosan has a higher capacity. The mechanism of acid dye adsorption and the effect of pH are also discussed.
URI: http://hdl.handle.net/10397/26832
ISSN: 0960-8524
EISSN: 1873-2976
DOI: 10.1016/j.biortech.2008.07.071
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