کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4484830 1316933 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Advanced oxidation effect of ozonation combined with electrolysis
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Advanced oxidation effect of ozonation combined with electrolysis
چکیده انگلیسی

The advanced oxidation effect of ozonation combined with electrolysis (electrolysis–ozonation) was discussed through the treatment of 4-chlorobenzoic acid (4-CBA) as a hydroxyl radical probe. The mechanism of hydroxyl radical production by electrolysis–ozonation process was also estimated with a mathematical model. The experimental results revealed that the electrolysis–ozonation process had a synergistic effect on the degradation of 4-CBA. The advanced oxidation effect of electrolysis–ozonation was inferred from standard potentials of relevant electrochemical reactions and mathematical model analysis to be mainly attributed to O3− promotion of O3 at the cathodes. An increase in electric current improved the degradation rate of 4-CBA. However, the pseudo-first order degradation rate constant reached a plateau at high electric current densities, as O3− promotion of O3 at the cathodes was regulated by O3 transport process from the bulk to the cathodes in the range exceeding an electric current density of 10 A m−2. Accordingly, the balance of O3 transport flux and electric current is important for the efficient operation of the electrolysis–ozonation reactor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 39, Issue 19, November 2005, Pages 4661–4672
نویسندگان
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