کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
581195 | 1453157 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simultaneous reduction of nitrate and oxidation of by-products using electrochemical method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Electrochemical denitrification was studied with an objective to enhance the selectivity of nitrate to nitrogen gas and to remove the by-products in an undivided electrochemical cell, in which Cu-Zn cathode and Ti/IrO2-Pt anode were assembled. In the presence of 0.50Â g/L NaCl as supporting electrolyte, the NO3â-N decreased from 100.0 to 9.7Â mg/L after 300Â min electrolysis; no ammonia and nitrite were detected in the treated solution. The surface of the cathode was appeared to be rougher than unused after electrolysis at initial pH 6.5 and 12.0. After electrolysis of 5Â h at the initial pH 3.0, passivation of the Cu-Zn cathode was observed. The reduction rate slightly increased with increasing current density in the range of 10-60Â mA/cm2 and temperatures had little effect on nitrate reduction. Nitrate could be completely removed by the simultaneous reduction and oxidation developed in this study, which is suitable for deep treatment of nitrate polluted water.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 171, Issues 1â3, 15 November 2009, Pages 724-730
Journal: Journal of Hazardous Materials - Volume 171, Issues 1â3, 15 November 2009, Pages 724-730
نویسندگان
Miao Li, Chuanping Feng, Zhenya Zhang, Xiaohui Lei, Rongzhi Chen, Yinan Yang, Norio Sugiura,