کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9617569 | 49170 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on behavior and kinetics of sorption of Ag+ by Shenfu3â1 coal
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
Shenfu3â1 coal has been used for the adsorption of Ag ion from aqueous solution, over a range of initial Ag+ concentrations (3240-21600 mg lâ1), temperatures (18, 20, 60 and 80 °C), pH values (1.5-10) etc. The Ag+ adsorption on Shenfu3â1 coal increased with an increase in initial concentration of Ag+ and with an increase in temperature. The process of uptake follows the Langmuir isotherm model. RL (0 < RL < 1) factor revealed the favorable nature of adsorption isotherm of the Ag+-coal system. The applicability of Lagergren and empirical kinetic models has also been investigated. Intraparticle diffusion studies revealed the Ag+ sorption interaction was complex and intraparticle diffusion was not the only rate limiting step. At pH 4.5 of Ag+-coal aqueous system,the adsorbent Shenfu3â1 coal yielded maximum Ag+ adsorption. The coal powders were characterized using Infrared spectroscopy and XRD before and after adsorption.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 85, Issues 1â2, 23 October 2005, Pages 104-110
Journal: Microporous and Mesoporous Materials - Volume 85, Issues 1â2, 23 October 2005, Pages 104-110
نویسندگان
Zhanjiang Yu, Anning Zhou, Jianlin Qu, Tianjun Zhang,