کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
583160 1453175 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Kinetics and equilibrium studies of malachite green adsorption on rice straw-derived char
چکیده انگلیسی
In this work, the potential feasibility of rice straw-derived char (RSC) for removal of C.I. Basic Green 4 (malachite green (MG)), a cationic dye from aqueous solution was investigated. The isotherm parameters were estimated by non-linear regression analysis. The equilibrium process was described well by the Langmuir isotherm model. The maximum RSC sorption capacity was found to be 148.74 mg/L at 30 °C. The kinetics of MG sorption on RSC followed the Lagergren's pseudo-first-order model and the overall rate of dye uptake was found to be controlled by external mass transfer at the beginning of adsorption, while intraparticle diffusion controlled the overall rate of adsorption at a later stage. The results indicated that RSC was an attractive adsorbent for removing basic dye from aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 153, Issues 1–2, 1 May 2008, Pages 701-708
نویسندگان
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