کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5745929 1618782 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of ketoprofen by sulfate radical-based advanced oxidation processes: Kinetics, mechanisms, and effects of natural water matrices
ترجمه فارسی عنوان
تجزیه کتوپروفن با فرآیندهای اکسیداسیون پیشرفته مبتنی بر رادیکال سولفات: سینتیک، سازوکارها و اثرات ماتریس آب طبیعی
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
چکیده انگلیسی
Ketoprofen (KET) is a mostly used nonsteroidal anti-inflammatory drug that has been frequently detected in wastewater effluents and surface waters. In this study, we investigated the degradation of KET by sulfate radical (SO4-) based advanced oxidation processes (SR-AOPs) in aqueous solution. The degradation kinetics, mechanisms, and effects of natural water matrices on thermally activated persulfate (TAP) oxidation of KET were systematically investigated. Increasing the temperature and persulfate (PS) concentrations greatly enhanced the degradation of KET. KET degradation is pH-dependent with an optimum pH of 5.0. Reactions in the presence of radical quenchers revealed the dominant role of SO4- in oxidizing KET. Water matrix significantly influenced the degradation of KET. The common inorganic anions present in natural waters exhibited inhibitory effect on KET degradation, and the inhibition followed the order of Cl− > CO32− > HCO3− > NO3−; however, no significant inhibition of KET degradation was observed in the presence of Ca2+ and Mg2+ cations. The presence of natural organic matter (NOM) suppressed KET degradation, and the suppression increased as NOM concentration increase. Products identification and mineralization experiments revealed that KET and its degradation intermediates were finally transformed into CO2 and H2O. The results of this study indicated that applying SR-AOPs for the remediation of KET contaminated water matrix is technically possible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 189, December 2017, Pages 643-651
نویسندگان
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