Degradation of linuron by ultrasound combined with photo-Fenton treatment
作者： Hideyuki Katsumata , Takuya Kobayashi , Satoshi Kaneco , Tohru Suzuki , Kiyohisa Ohta
DOI: 10.1016/J.CEJ.2010.10.073
关键词: Chloride 、 Nitrite 、 Mineralization (biology) 、 Degradation (geology) 、 Mineralogy 、 Reaction rate constant 、 Nuclear chemistry 、 Chemistry 、 Nitrate 、 Photodegradation 、 Water treatment
摘要: Abstract Sonochemical photodegradation of linuron, which is one phenylurea herbicides, was carried out in the presence Fe(II). The degradation rate strongly influenced by initial concentration Fe(II) and solution pH. optimal pH were found to be 1.2 × 10 −4 mol L −1 3.0, respectively. An linuron 10 mg L completely degraded ultrasound/Fe(II)/UV system after 20 min under optimum conditions while only 79.3% decomposed ultrasonic irradiation. Furthermore, first-order constant ultrasound//Fe(II)/UV process (0.17 min ) about 2 times greater than that alone (0.08 min ). decrease TOC as a result mineralization observed during combination process. complete achieved 120 min. formations chloride, nitrite nitrate ions end-products system. Based on these results, would useful technology for treatment water samples containing linuron.
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