کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
580770 | 1453156 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degradation of microcystin-RR using boron-doped diamond electrode
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Degradation of microcystin-RR using boron-doped diamond electrode Degradation of microcystin-RR using boron-doped diamond electrode](/preview/png/580770.png)
چکیده انگلیسی
Microcystins (MCs), produced by blue-green algae, are one of the most common naturally occurring toxins found in natural environment. The presence of MCs in drinking water sources poses a great threat to people's health. In this study, the degradation behavior of microcystin-RR on boron-doped diamond (BDD) electrode was investigated under galvanostatic conditions. Such parameters as reaction time, supporting electrolyte and applied current density were varied in order to determine their effects on this oxidation process. The experimental results revealed the suitability of electrochemical processes employing BDD electrode for removing MC-RR from the solution. However, the efficient removal of MC-RR only occurred in the presence of sodium chloride that acted as redox mediators and the reaction was mainly affected by the chloride concentration (cNaCl) and applied current density (Iappl). Full and quick removal of 0.50 μg/ml MC-RR in solution was achieved when the operating conditions of cNaCl and Iappl were 20 mM and 46.3 mA/cm2, or 35 mM and 18.2 mA/cm2 respectively. The kinetics for MC-RR degradation followed a pesudo-first order reaction in most cases, indicating the process was under mass transfer control. As a result of its excellent performance, the BDD technology could be considered as a promising alternative to promote the degradation of MC-RR than chlorination in drinking water supplies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 172, Issues 2â3, 30 December 2009, Pages 847-853
Journal: Journal of Hazardous Materials - Volume 172, Issues 2â3, 30 December 2009, Pages 847-853
نویسندگان
Chunyong Zhang, Degang Fu, Zhongze Gu,