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
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
Degradation of carbamazepine by Fe(II)-activated persulfate process
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+/S2O82− 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 S2O82− exhibited a noticeable influence on CBZ removal efficiency, where [S2O82−] exerted more significant effects than that of [Fe2+]. The optimal molar ratio of CBZ, Fe2+, and S2O82− 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 NO3−, SO42− and H2PO4-caused a negative effect on the performance of this process, while Cl− interestingly accelerated CBZ degradation. The higher the Cl− concentration, the faster the CBZ decay rate. The intermediates were identified during CBZ degradation with and without the presence of Cl−. 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
نویسندگان
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