کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9674394 | 1453205 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photooxidative degradation of Acid Red 27 in a tubular continuous-flow photoreactor: influence of operational parameters and mineralization products
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photooxidative degradation of Acid Red 27 in a tubular continuous-flow photoreactor: influence of operational parameters and mineralization products Photooxidative degradation of Acid Red 27 in a tubular continuous-flow photoreactor: influence of operational parameters and mineralization products](/preview/png/9674394.png)
چکیده انگلیسی
The decolorization and mineralization of Acid Red 27 (AR27), an anionic monoazo dye of acid class, was investigated using UV radiation in the presence of H2O2 in a tubular continuous-flow photoreactor as a function of oxidant concentration, reactor length, flow rate and light intensity. The removal efficiency of AR27 depends on the operational parameters and increases as the initial concentration of H2O2 and light intensity are increased but it decreases when the flow rate is increased. The AR27 degradation was followed through HPLC, UV-vis and COD analyses. The results of these analyses showed that the final outlet stream from the photoreactor was completely mineralized. The UV/H2O2 process was also able to mineralize nitrogen and sulfur heteroatoms into NH4+, NO3â, NO2â and SO42â ions, respectively. The nitrogen of azo group was transformed predominantly to NH4+ ions. Decreasing the flow rate results in the reduction of COD and promotion of SO42â at the final outlet stream of the photoreactor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 118, Issues 1â3, 14 February 2005, Pages 155-160
Journal: Journal of Hazardous Materials - Volume 118, Issues 1â3, 14 February 2005, Pages 155-160
نویسندگان
N. Daneshvar, M. Rabbani, N. Modirshahla, M.A. Behnajady,