کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
577104 | 1453092 | 2014 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Degradation of carbamazepine by Fe(II)-activated persulfate process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
Experimental studies were conducted to investigate the oxidative degradation of carbamazepine (CBZ), one of the most frequently detected pharmaceuticals in various waters, by Fe(II)-activated persulfate process. Results show that the Fe2+/S2O82â process is very effective for the elimination of CBZ and characterized by a two-stage kinetics (a rapid initial decay followed by a retardation stage). CBZ degradation reaction was observed to be pH dependent and the optimum pH is 3.0 in the range of 2.00-7.87. The concentration of Fe2+ and S2O82â exhibited a noticeable influence on CBZ removal efficiency, where [S2O82â] exerted more significant effects than that of [Fe2+]. The optimal molar ratio of CBZ, Fe2+, and S2O82â is found to be 1:5:40. The effect of various inorganic anions on CBZ removal was also evaluated under the optimal conditions. The anions NO3â, SO42â and H2PO4-caused a negative effect on the performance of this process, while Clâ interestingly accelerated CBZ degradation. The higher the Clâ concentration, the faster the CBZ decay rate. The intermediates were identified during CBZ degradation with and without the presence of Clâ. The evolution of intermediates for these two scenarios was compared. The decay pathways of CBZ were proposed accordingly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 268, 15 March 2014, Pages 23-32
Journal: Journal of Hazardous Materials - Volume 268, 15 March 2014, Pages 23-32
نویسندگان
Y.F. Rao, Liang Qu, Haisong Yang, W. Chu,