کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
579653 | 1453146 | 2010 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation and utilization of wheat straw bearing amine groups for the sorption of acid and reactive dyes from aqueous solutions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Removal of Acid Red 73 (AR 73) and Reactive Red 24 (RR 24) onto modified wheat straw (MWS) from aqueous solutions was investigated. Sorption experiments were carried out as function of MWS dosage, contact time, initial concentration, pH and temperature. Characterizations of MWS were measured and a mass of amine groups were observed in the framework of MWS. The equilibrium sorption data were well represented by the Langmuir isotherm equation, and the calculated thermodynamic parameters indicated a spontaneous and endothermic nature for sorption process. It was shown that pseudo-second-order kinetic equation could best describe the adsorption kinetics. More over, the high maximum sorption capacity (qe max, 714.3 mg gâ1 for AR 73 and 285.7 mg gâ1 for RR 24) and low cost (1.24 US$ kgâ1) of MWS provided strong evidence of the potential of MWS for the technological applications of anionic dyes removal from aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 182, Issues 1â3, 15 October 2010, Pages 1-9
Journal: Journal of Hazardous Materials - Volume 182, Issues 1â3, 15 October 2010, Pages 1-9
نویسندگان
Xing Xu, Bao-Yu Gao, Qin-Yan Yue, Qian-Qian Zhong,