کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5144481 1496865 2018 35 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation of carbamazepine using hydrodynamic cavitation combined with advanced oxidation processes
ترجمه فارسی عنوان
کاهش کاربامازپین با استفاده از حفره هیدرودینامیکی همراه با فرآیندهای اکسیداسیون پیشرفته
کلمات کلیدی
کاربامازپین، حفره هیدرودینامیکی، فرایندهای اکسیداسیون پیشرفته، مطالعه جنبشی، عملکرد کاویتاسیون، هزینه کل درمان،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
چکیده انگلیسی
Degradation of carbamazepine (CBZ), a widely detected recalcitrant pharmaceutical in sewage treatment plant (STP) effluent, has been studied in the present work using combination of hydrodynamic cavitation (HC) and advanced oxidation processes (AOPs). Due to its recalcitrant nature, it cannot be removed effectively by the conventional wastewater treatment plants (WWTPs) which make CBZ a pharmaceutical of very high environmental relevance and impact as well as stressing the need for developing new treatment schemes. In the present study, the effect of inlet pressure (3-5 bar) and operating pH (3-11) on the extent of degradation have been initially studied with an objective of maximizing the degradation using HC alone. The established optimum conditions as pressure of 4 bar and pH of 4 resulted in maximum degradation of CBZ as 38.7%. The combined approaches of HC with ultraviolet irradiation (HC + UV), hydrogen peroxide (HC + H2O2), ozone (HC + O3) as well as combination of HC, H2O2 and O3 (HC + H2O2 + O3) have been investigated under optimized pressure and operating pH. It was observed that a significant increase in the extent of degradation is obtained for the combined operations of HC + H2O2 + O3, HC + O3, HC + H2O2, and HC + UV with the actual extent of degradation being 100%, 91.4%, 58.3% and 52.9% respectively. Kinetic analysis revealed that degradation of CBZ fitted into first order kinetics model for all the approaches. The processes were also compared on the basis of cavitational yield and also in terms of total treatment cost. Overall, it has been demonstrated that combined process of HC, H2O2 and O3 can be effectively used for treatment of wastewater containing CBZ.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 40, Part A, January 2018, Pages 567-576
نویسندگان
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