کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
576498 1453078 2015 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photochemical degradation of atenolol, carbamazepine, meprobamate, phenytoin and primidone in wastewater effluents
ترجمه فارسی عنوان
تخریب فتوشیمی آتنولول، کاربامازپین، مپروبامات، فنیتوئین و پریمیدون در پساب فاضلاب
کلمات کلیدی
تخریب دارویی، فتولیز، فاضلاب،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بهداشت و امنیت شیمی
چکیده انگلیسی
The photochemical degradation of five pharmaceuticals was examined in two secondary wastewater effluents. The compounds, which included atenolol, carbamazepine, meprobamate, phenytoin and primidone, were evaluated for both direct and sensitized photolysis. In the two wastewaters, direct photolysis did not lead to significant compound degradation; however, sensitized photolysis was an important removal pathway for the five pharmaceuticals. Upon solar irradiation, hydroxyl radical (HO) was quantified using the hydroxylation of benzene and singlet oxygen (1O2) formation was monitored following the degradation of furfuryl alcohol. Degradation via sensitized photolysis was observed following five-day exposures for atenolol (69-91%), carbamazepine (67-98%), meprobamate (16-52%), phenytoin (44-85%), and primidone (34-88%). Varying removal is likely a result of the differences in reactivity with transient oxidants. Averaged steady state HO concentrations ranged from 1.2 to 4.0 × 10−16 M, whereas the concentrations of 1O2 were 6.0-7.6 × 10−14 M. Partial removal due to presence of HO indicates it was not the major sink for most compounds examined. Other transient oxidants, such as 1O2 and triplet state effluent organic matter, are likely to play important roles in fates of these compounds.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 282, 23 January 2015, Pages 216-223
نویسندگان
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