| 纳米TiO2光催化降解直接冻黄染料的研究 |
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| 引用本文： | 许佩瑶,吴扬,李海宗.纳米TiO2光催化降解直接冻黄染料的研究[J].水处理技术,2005,31(12):31-33. |
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| 作者姓名： | 许佩瑶 吴扬 李海宗 |
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| 作者单位： | 华北电力大学环境科学与工程学院,河北,保定,071003;华北电力大学环境科学与工程学院,河北,保定,071003;华北电力大学环境科学与工程学院,河北,保定,071003 |
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| 摘 要： | 以纳米TiO2作为光催化剂,紫外灯为光源,对印染废水中的直接冻黄G染料进行了光催化降解实验.讨论了COD的初始浓度、光照时间、纳米TiO2投加量、初始pH值和外加催化剂Fe3＋的用量等五个因素对COD和色度去除率的影响.正交实验结果表明：初始pH值和光照时间是影响光催化氧化反应的关键因素;在初始COD为144.67mg/L、Fe3＋投加量为6.72mg/L、纳米TiO2投加量为100mg/mL、pH6的条件下,经6h的照射,COD的去除率达到80%,色度的去除率达到98.5%.
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| 关 键 词： | 光催化氧化 纳米二氧化钛 直接冻黄G 降解 |
| 文章编号： | 1000-3770（2005）12-0031-03 |
| 收稿时间： | 12 15 2004 12:00AM |
| 修稿时间： | 2004-12-15 |
PHOTOCATALYTIC DEGRADATION OF CHRYSOPHENINE G BY NANO-SIZE TiO2 |
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| Xu Pei-yao,Wu Yang,Li Hai-zong.PHOTOCATALYTIC DEGRADATION OF CHRYSOPHENINE G BY NANO-SIZE TiO2[J].Technology of Water Treatment,2005,31(12):31-33. |
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| Authors: | Xu Pei-yao Wu Yang Li Hai-zong |
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| Affiliation: | Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China |
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| Abstract: | Photocatalytic degradation of Chrysophenine G was studied by nano-size TiO2 as photocatalyst and UV as light source.The factors of the initial chemical oxygen demand(COD) concentration,the time of light-catalysed,the amount of nanometer TiO2,initial pH and Fe3 catalyst amount had great impact on removal rate of COD and chromaticity.Through orthogonal test,It was found that the initial pH and the time of light-catalysed were the main factors affecting photocatalytic oxidation reaction.Moreover,under the conditions of initial COD of 144.67mg/L,Fe3 dosage of 6.72mg/L,TiO2 dosage of 100mg/L and pH=6,COD removal rate reached to 80% and colority removal rate reached to 98.5%. |
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| Keywords: | photocatalysis nano-size TiO2 chrysophenine G degradation |
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