کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
579645 1453140 2011 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Surface complexation modeling of the removal of arsenic from ion-exchange waste brines with ferric chloride
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Surface complexation modeling of the removal of arsenic from ion-exchange waste brines with ferric chloride
چکیده انگلیسی
Surface complexation modeling and experimental coagulation tests were performed to investigate the influence of ionic strength, pH, Fe/As molar ratios, and alkalinity on the removal of arsenic from IX brines. The model prediction was in good agreement with the experimental data. Optimum pH range was found to be between 4.5 and 6.5. The arsenic removal efficiency slightly improved with higher ionic strength. The Fe/As ratios needed to treat brines were significantly lower than those used to treat drinking waters. For arsenic (V) concentrations typical in IX brines, Fe/As molar ratios varying from 1.3 to 1.7 were needed. Sludge solid concentrations varying from 2 to 18 mg L−1 were found. The results of this research have direct application to the treatment of residual wastes brines containing arsenic.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 188, Issues 1–3, 15 April 2011, Pages 399-407
نویسندگان
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