| 偏电压对Ti/TiO2光电催化氧化富里酸的影响 |
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| 引用本文： | 季民,金洛楠,傅剑锋,李湘中. 偏电压对Ti/TiO2光电催化氧化富里酸的影响[J]. 环境化学, 2006, 25(2): 145-148 |
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| 作者姓名： | 季民 金洛楠 傅剑锋 李湘中 |
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| 作者单位： | 天津大学环境科学与工程学院,天津,300072;绍兴市水务集团,绍兴,312000;香港理工大学土木与结构系,香港 |
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| 摘 要： | 采用光电催化反应器对水中天然有机物富里酸(FA)进行降解试验,考察了外加阳极偏电压对光电催化反应器降解富里酸的影响.结果表明,当外加电压为1.2V时,具有最佳的UV254和有机碳TOC去除率,当反应时间为2h时,富里酸的UV254和总有机碳TOC的去除率分别为77.4%和45.4%.另外,在反应初期(前1h内)富里酸光电催化反应动力学常数主要受外加偏电压的影响.
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| 关 键 词： | 光电催化 Ti/TiO2电极 富里酸 外加偏电压 |
| 收稿时间： | 2005-06-06 |
| 修稿时间： | 2005-06-06 |
POTENTIAL BIAS ON THE PHOTOELECTROCATALYTIC DEGRADATION OF FULVIC ACID |
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| JI Min,JIN Luo-nan,Fu Jian-feng,LI Xiang-zhong. POTENTIAL BIAS ON THE PHOTOELECTROCATALYTIC DEGRADATION OF FULVIC ACID[J]. Environmental Chemistry, 2006, 25(2): 145-148 |
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| Authors: | JI Min JIN Luo-nan Fu Jian-feng LI Xiang-zhong |
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| Affiliation: | 1 School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China; 2 Shaoxing Water Group Co. , LTD, Shaoxing, 312000, China; 3 Department of Civil and Structural Engineering, Hong Kong Polytechnic University, Hong Kong, China |
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| Abstract: | A new photoelectrocatalytic reactor was adopted to investigate the external anodic potential affecting the degradation of natural organic matter-fulvic acid. The results showed that the remove of UV254and TOC reached maximum while the electrical bias applied is 1. 2V. The remove of UV254and TOC is 77. 4% and 45. 4% respectively after reacting two hours. Experimental results indicated that the kinetic of degradation of natural organic matter-fulvic acid by photoelectrocatalytic reactor was highly effected by electrical bias applied at early reaction (before an hour) . |
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| Keywords: | photoelectrocatalytic degradation Ti/TiO2mesh photoelectrode fulvic acid electrical bias. |
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