کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
581001 | 1453155 | 2010 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Factors influencing arsenic and nitrate removal from drinking water in a continuous flow electrocoagulation (EC) process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
An experimental study was conducted under continuous flow conditions to evaluate some of the factors influencing contaminant removal by electrocoagulation (EC). A bench-scale simulation of drinking water treatment was done by adding a filtration column after a rectangular EC reactor. Contaminant removal efficiency was determined for voltages ranging from 10 to 25Â V and a comparative study was done with distilled water and tap water for two contaminants: nitrate and arsenic(V). Maximum removal efficiency was 84% for nitrate at 25Â V and 75% for arsenic(V) at 20Â V. No significant difference in contaminant removal was observed in tap water versus distilled water. Increase in initial As(V) concentration from 1Â ppm to 2Â ppm resulted in a 10% increase in removal efficiency. Turbidity in the EC reactor effluent was 52Â NTU and had to be filtered to achieve acceptable levels of final turbidity (5Â NTU) at steady-state. The flow regime in the continuous flow reactor was also evaluated in a tracer study to determine whether it is a plug flow reactor (PFR) or constantly stirred tank reactor (CSTR) and the results show that this reactor was close to an ideal CSTR, i.e., it was fairly well-mixed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 173, Issues 1â3, 15 January 2010, Pages 528-533
Journal: Journal of Hazardous Materials - Volume 173, Issues 1â3, 15 January 2010, Pages 528-533
نویسندگان
N. Sanjeev Kumar, Sudha Goel,