Enhancing the adsorption capacities of acid dyes by chitosan nano particles

被引：169

作者：

Cheung, W. H. ^{[1
]}

Szeto, Y. S. ^{[2
]}

McKay, G. ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Chem Engn, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Polytech Univ, Inst Text & Clothing, Kowloon, Hong Kong, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2009年 / 100卷 / 03期

关键词：

Nanochitosan; Adsorption; Chitosan; Acid dyes; WASTE RED MUD; AGRICULTURAL BY-PRODUCTS; ACTIVATED CARBON; COLOR REMOVAL; CONGO RED; TRIPHENYLMETHANE DYES; NATURAL ADSORBENTS; TEXTILE EFFLUENTS; FULLERS EARTH; SOLID-WASTE;

D O I：

10.1016/j.biortech.2008.07.071

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

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, A012, 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. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1143 / 1148

页数：6

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