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二氧化钛悬浆体系太阳光催化降解甲基橙研究
引用本文:王怡中,符雁,汤鸿霄.二氧化钛悬浆体系太阳光催化降解甲基橙研究[J].环境科学学报,1999,19(1):63-67.
作者姓名:王怡中  符雁  汤鸿霄
作者单位:中国科学院生态环境研究中心环境水化学国家重点实验室,北京,100085
摘    要:利用太阳光作为光源,采用二氧化钛悬浆体系,考察了甲基橙溶液光催化降解反应中影响反应速度的相关因素.实验结果表明,太阳光强度、二氧化钛的投加量、反应器的A/V值、溶液的初始浓度是影响反应速率的重要因素.在平均照度为92600lx的晴天,初始浓度为20mg/L的甲基橙溶液,初始pH为388,反应器A/V值为36m-1时,光照2h后色度去除率达90%以上,4h后TOC去除率接近70%.实验结果证明了非聚焦开放式反应器构型和二氧化钛悬浆体系能很好地利用太阳能、有效地完成对甲基橙的脱色和有机碳的去除.各因素与甲基橙脱色速率的关系将作为进一步设计反应器的重要参数.

关 键 词:光催化氧化  甲基橙脱色  浅池构型反应器  二氧化钛
收稿时间:4/7/1997 12:00:00 AM

Solar photocatalytic oxidation of methyl orange with TiO2 suspension
WANG Yizhong,FU Yan and TANG Hongxiao.Solar photocatalytic oxidation of methyl orange with TiO2 suspension[J].Acta Scientiae Circumstantiae,1999,19(1):63-67.
Authors:WANG Yizhong  FU Yan and TANG Hongxiao
Affiliation:Research Centre for Eco Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of Sciences, Beijing 100085,Research Centre for Eco Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of Sciences, Beijing 100085 and Research Centre for Eco Environmental Sciences, State Key Laboratory of Environmental Aquatic Chemistry, Chinese Academy of Sciences, Beijing 100085
Abstract:The photocatalytic degradation of methyl orange in solar irradiating with TiO 2 suspension was investigated.The effects of methyl orange initial concentration,solution pH,catalyst quantity,irradiation intensity and the ration of reactor's aperture to volume( A/V ) on decolorization rate and TOC removal rate were discussed in detail.The results showed that in typical sunny day,when solar irradiation average intensity was 91600lx,initial concentration of methyl orange was 20mg/L,initial pH was 3 88, A/V is 36 m -1 ,after 2h irradiation the decolorization ration was 90% and after 4h TOC removal achieved 70%.
Keywords:solar photocatalytic oxidation  methyl orange  TiO 2  
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