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《Environmental Engineering》 2003-04
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PILOT RESEARCH ON TREATMENT OF AZO DYE 4BS SOLUTION BY A FLUIDIZED BED PHOTOCATALYTIC REACTOR

Li Yaozhong et al  
This paper presents the degradation of azo dye 4BS in a pilot-scale fluidized bed photocatalytic reactor using 30~40 mesh TiO_2-coated photocatalyst and high pressure Hg lamp as the UV radition source.The study focuses on evaluating process parameters and reaction kinetics.It was shown that the pilot plant devleoped is effective for the treatment of 4BS wastewater,and appropriate enhancement of light intensity and dissovled oxygen are favorable to photocatalytic degradation.In addition,catalyst optimal dosage was observed.Results also clearly indicate that the photocatalytic degradation of 4BS solution was characterized by apparent first order reaction kinetics,and the kinetic relation between the apparent reaction rate constant and initial 4BS concentration could be described by nearly negative first-order kinetics.
【Fund】: 国家“九五”科技攻关项目 (96 90 9 0 5 0 2 0 1 )
【CateGory Index】: X703
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