کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
583076 | 1453175 | 2008 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Preparation of sludge-based activated carbon and its application in dye wastewater treatment
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
A novel activation process was adopted to produce highly porous activated carbon from cyclic activated sludge in secondary precipitator in municipal wastewater treatment plant for dye removal from colored wastewater. The physical properties of activated carbon produced with the activation of 3Â M KOH solution in the atmosphere of steam were investigated. Adsorption removal of a dye, Acid Brilliant Scarlet GR, from aqueous solution onto the sludge-based activated carbon was studied under varying conditions of adsorption time, initial concentration, carbon dosage and pH. Adsorption equilibrium was obtained in 15Â min for the dye initial concentration of 300Â mg/L. Initial pH of solution had an insignificant impact on the dye removal. Results indicated that 99.7% coloration and 99.6% total organic carbon (TOC) were removed after 15Â min adsorption in the synthetic solution of Acid Brilliant Scarlet GR with initial concentration of 300Â mg/L of the dye and 20Â g/L activated carbon. The Langmuir and Freundlich equilibrium isotherm models fitted the adsorption data well with R2Â =Â 0.996 and 0.912, respectively. Accordingly, it is concluded that the procedure of developing activated carbon used in this study could be effective and practical for utilizing in dye wastewater treatment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 153, Issues 1â2, 1 May 2008, Pages 22-27
Journal: Journal of Hazardous Materials - Volume 153, Issues 1â2, 1 May 2008, Pages 22-27
نویسندگان
Xiaoning Wang, Nanwen Zhu, Bingkui Yin,