کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1251424 1496047 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Removal of Cu(II), Cd(II) and Cr(III) ions from aqueous solution by dam silt
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Removal of Cu(II), Cd(II) and Cr(III) ions from aqueous solution by dam silt
چکیده انگلیسی

The removal of heavy metals, such as Cu(II), Cd(II) and Cr(III) from aqueous solution was studied using Chorfa silt material (Mascara, Algeria). The main constituents of silt sediment are quartz, calcite and mixture of clays. The experimental data were described using Freundlich, Langmuir, Dubinin–Radushkevich (D–R) and Langmuir–Freundlich models. The adsorbed amounts of chromium and copper ions were very high (95% and 94% of the total concentration of the metal ions), whereas cadmium ion was adsorbed in smaller (55%) amounts. The Langmuir–Freundlich isotherm model was the best to describe the experimental data. The maximum sorption capacity was found to be 26.30, 11.76 and 0.35 mg/g for Cr3+, Cu2+ and Cd2+, respectively. The results of mean sorption energy, E (kJ/mol) calculated from D–R equation, confirmed that the adsorption of copper, chromium and cadmium on silt is physical in nature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Arabian Journal of Chemistry - Volume 6, Issue 4, October 2013, Pages 401–406
نویسندگان
, , , ,