کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
584939 | 877901 | 2007 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal of cadmium from aqueous solutions by adsorption onto orange waste
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Removal of cadmium from aqueous solutions by adsorption onto orange waste Removal of cadmium from aqueous solutions by adsorption onto orange waste](/preview/png/584939.png)
چکیده انگلیسی
The use of orange wastes, generated in the orange juice industry, for removing cadmium from aqueous solutions has been investigated. The material was characterized by Fourier transform infrared spectroscopy and batch experiments were conducted to determine the adsorption capacity of the biomass. A strong dependence of the adsorption capacity on pH was observed, the capacity increasing as pH value rose. Kinetics and adsorption equilibrium were studied at different pH values (4-6). The adsorption process was quick and the equilibrium was attained within 3Â h. The maximum adsorption capacity of orange waste was found to be 0.40, 0.41 and 0.43Â mmol/g at pH 4-6, respectively. The kinetic data were analysed using various kinetic models - pseudo-first order equation, pseudo-second order equation, Elovich equation and intraparticle diffusion equation - and the equilibrium data were tested using four isotherm models - Langmuir, Freundlich, Sips and Redlich-Peterson. The data were fitted by non-linear regression and five error analysis methods were used to evaluate the goodness of the fit. The Elovich equation provides the greatest accuracy for the kinetic data and the Sips model the closest fit for the equilibrium data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 139, Issue 1, 2 January 2007, Pages 122-131
Journal: Journal of Hazardous Materials - Volume 139, Issue 1, 2 January 2007, Pages 122-131
نویسندگان
A.B. Pérez-MarÃn, V. Meseguer Zapata, J.F. Ortuño, M. Aguilar, J. Sáez, M. Lloréns,