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 Microwave-assisted degradation of organic compounds in municipal wastewater over Fe2O3 catalyst
Tác giả hoặc Nhóm tác giả: Hoang Minh Nguyen; Tuan Cong Vo; Nabil Majd Alawi; Phu Tran Vinh Pham
Nơi đăng: AIP Conference Proceedings; Số: 2443;Từ->đến trang: 030036.1-030036 .6;Năm: 2022
Lĩnh vực: Khoa học công nghệ; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT
Microwave (MW)-assisted advanced oxidation processes have opened novel routes for wastewater treatment. In this work, MW-assisted degradation of organic compounds from municipal wastewaters over Iron (III) oxide (Fe2O3) catalyst was studied. Experimental results indicated that the removal efficiency of TOC (Total Organic Compounds), COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), and pathogens including Escherichia coli (E.coli) and coliforms was around 40 % at a MW power of 50 W under 4 minutes of the reaction. The increment in the MW power and reaction time enhanced the decomposition efficiency significantly. Almost 90 % TOC, BOD, COD, and pathogens were removed after 10 minutes of the reaction under a MW power of 300 W. The MW energy played a dual role to generate local hotspots on the Fe2O3 surface improving the organic removal efficiency and to exhilarate microorganism cell walls, and thereby, promoting the deconstruction of E.coli and coliforms bacteria
ABSTRACT
Microwave (MW)-assisted advanced oxidation processes have opened novel routes for wastewater treatment. In this work, MW-assisted degradation of organic compounds from municipal wastewaters over Iron (III) oxide (Fe2O3) catalyst was studied. Experimental results indicated that the removal efficiency of TOC (Total Organic Compounds), COD (Chemical Oxygen Demand) and BOD (Biochemical Oxygen Demand), and pathogens including Escherichia coli (E.coli) and coliforms was around 40 % at a MW power of 50 W under 4 minutes of the reaction. The increment in the MW power and reaction time enhanced the decomposition efficiency significantly. Almost 90 % TOC, BOD, COD, and pathogens were removed after 10 minutes of the reaction under a MW power of 300 W. The MW energy played a dual role to generate local hotspots on the Fe2O3 surface improving the organic removal efficiency and to exhilarate microorganism cell walls, and thereby, promoting the deconstruction of E.coli and coliforms bacteria
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