期刊
ARABIAN JOURNAL OF CHEMISTRY
卷 4, 期 4, 页码 389-395出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.arabjc.2010.07.007
关键词
Chitosan; Acid yellow dye; Adsorption
Chitosan flakes, extracted from prawns and labeo rohita scales, with high adsorption capacity were prepared after chemical treatment and were used to remove acid yellow dye from water. The results showed that adsorption capacity is dependent on pH, initial concentration of dye, BET, Langmuir surface area and pore volume of the adsorbent. In acidic conditions, the polymer amino groups were protonated (positively charged polymer chain), which showed attraction with negative ions of anionic dye. Chitosan from prawns scales showed higher dye adsorption under the same experimental conditions. Adsorption isotherms were developed and equilibrium data fitted well to Langmuir and Freundlich isotherm models. (C) 2010 King Saud University. Production and hosting by Elsevier B.V. All rights reserved.
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