کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
583253 1453172 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Sorption equilibrium of mercury onto ground-up tree fern
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Sorption equilibrium of mercury onto ground-up tree fern
چکیده انگلیسی
The sorption behavior of mercury at different temperatures onto ground-up tree fern was investigated. The experimental results were fitted to two two-parameter isotherms, the Freundlich and Langmuir isotherms, as well as to two three-parameter isotherms, the Redlich-Peterson and Sips isotherms to obtain the characteristic parameters of each model. A comparison of best-fitting was performed using the coefficient of determination and Chi-square test. Both the Langmuir and Redlich-Peterson isotherms were found to well represent the measured sorption data. According to the evaluation using the Langmuir equation, the saturated monolayer sorption capacity of mercury ions onto ground-up tree fern was 26.5 mg/g at 298 K. It was noted that an increase in temperature resulted in a higher mercury ion loading per unit weight of the tree fern. In addition, various thermodynamic parameters, such as ΔG°, ΔH°, and ΔS°, were calculated and compared with the sorption of mercury by other sorbents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 156, Issues 1–3, 15 August 2008, Pages 398-404
نویسندگان
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