کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
582900 1453171 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of gas-liquid gliding arc discharge on Acid Orange II
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Degradation of gas-liquid gliding arc discharge on Acid Orange II
چکیده انگلیسی
The effects of pH value, initial concentration of dye solution and temperature on the degradation efficiency of Acid Orange II (AO7) using gas-liquid gliding arc discharge were investigated. The influences of pH value and temperature on degradation efficiency were not apparent. Increasing initial solution concentration caused the decrease of degradation rate and the increase of absolute degradation quantity. Considering energy efficiency and absolute degradation quantity, the gas-liquid gliding arc discharge is fit for treating high concentration organic wastewater. A possible mineralization pathway was proposed through the analysis of intermediate products detected by gas chromatograph coupled with mass spectrophotometer (GC-MS) and ion chromatograph (IC). Hydroxyl radicals reacted with the azo linkage-bearing carbon of a hydroxy-substituted ring, leading to the cleavage of CN and degradation of AO7. The solution biodegradability was significantly improved (BOD5/COD from 0.02 to 0.43). The toxicity of intermediate products was lower than that of the initial Acid Orange II.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 157, Issues 2–3, 15 September 2008, Pages 441-447
نویسندگان
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