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《Journal of Dalian Jiaotong University》 2009-02
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Photocatalysis Degradation Reactive Bright Orange Solution

ZHU Xiu-hua1,2,ZHU Min1,WANG Wei1,MU Jun1,PENG Xiao-jun2,ZHANG Rong2(1.School of Environmental and Chemical Engneering,Dalian Jiaotong University,Dalian 116028,China;2.State Key Laboratory of Fine Chemicals,Dalian University of Technology,Dalian 116012,China)  
Photocatalytic decomposition of reactive bright orange(abbreviated as KGN) with polyoxometale(H3PW12O40 and H4SiW12O40) and TiO2 was investigated in an aqueous solution with a 20W UV lamp,a 500W Xe arc lamp and sunlight.The effects of KGN solution initial pH,catalyst quantity and irradiation light source on decolorization and TOC and COD removal rates were studied.The results indicated that when solar irradiation average intensity was 98000lx,initial KGN concentration and pH was 10mg/L,and 2.00,respectively,with 0.6g/L catalyst,after 1h irradiation,the decolorization rate was 96.67%,and TOC and COD removal rates were 79.22% and 85.98%,the ratio of BOD5/COD was 0.3.The capacity of H3PW12O40,H4SiW12O40 and TiO2 for photocatalytic degradation of KGN is different,and the order follows TiO2H3PW12O40 H4SiW12O40.The efficiency of decolorization and mineralization of KGN with H3PW12O40 is comparable with TiO2 under the irradiation of UV lamp and sunlight,and the effluent water can be treated with ordinary biochemical process.
【Fund】: 大连理工大学精细化工国家重点实验室开放课题基金资助项目(KF0707)
【CateGory Index】: X703
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