کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
583316 1453170 2008 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption equilibrium and kinetics of basic dye from aqueous solution using banana stalk waste
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Sorption equilibrium and kinetics of basic dye from aqueous solution using banana stalk waste
چکیده انگلیسی
The sorption of basic dye from aqueous solutions by banana stalk waste (BSW), an abundant agricultural waste in Malaysia, was studied in a batch system with respect to pH and initial dye concentration. Sorption isotherm of methylene blue (MB) onto the BSW was determined at 30 °C with the initial concentrations of MB in the range of 50-500 mg/L. At pH 2.0, the sorption of dye was not favorable, while the sorption at other pHs (4.0-12.0) was remarkable. Equilibrium data were fitted to the Langmuir, Freundlich and Temkin isotherm models. The equilibrium data were best represented by the Langmuir isotherm model, with maximum monolayer adsorption capacity of 243.90 mg/g. The sorption kinetic data were analyzed using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. It was found that the pseudo-second-order kinetic model was the best applicable model to describe the sorption kinetics. The results showed that BSW sorbent was a promising for the removal of MB from aqueous solutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 158, Issues 2–3, 30 October 2008, Pages 499-506
نویسندگان
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