کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
578877 1453138 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of persulfate on the oxidation of benzotriazole and humic acid by e-beam irradiation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Effect of persulfate on the oxidation of benzotriazole and humic acid by e-beam irradiation
چکیده انگلیسی
These days, the use of persulfate in advanced oxidation processes (AOPs) has gained more attention as an emerging clean and efficient technology to degrade the organic pollutants. The objective of this study was to investigate the effect of the addition of persulfate on the oxidation of benzotriazole (BT) and humic acids (HAs) by irradiation. The degradation of BT (3.7 μM) was followed under the influence of persulfate addition (200-500 μM) in combination with a fixed radiation dose (15 Gy) in the absence and presence of HA (5 and 20 mg/L) in deionized water. The main results obtained in this study on the degradation of BT in the presence of HA showed a different effect of S2O82− addition during irradiation, depending on whether HA are oxidized or not-oxidized. (1) An inhibitory effect of S2O82− was observed in the presence of non-oxidized HA. (2) The removal of BT was generally more important during irradiation in the presence of S2O82− when HA is pre-oxidized. This could be explained by the different structures of humic acids. These differences of structures of HA were identified by physico-chemical parameters such as the absorbance in the UV (254 nm), the fluorescence and the SUVA measurement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 190, Issues 1–3, 15 June 2011, Pages 403-408
نویسندگان
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