| 微波无极紫外光催化降解茜素绿的性能研究及产物分析 |
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| 引用本文： | 熊重铎,程强,施薇,徐爱华,夏东升,曾庆福.微波无极紫外光催化降解茜素绿的性能研究及产物分析[J].环境工程学报,2014,8(12):5185-5190. |
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| 作者姓名： | 熊重铎 程强 施薇 徐爱华 夏东升 曾庆福 |
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| 作者单位： | 1. 东华大学环境科学与工程学院, 上海 201620; 2. 武汉纺织大学纺织印染清洁生产教育部工程中心, 武汉 430200 |
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| 基金项目： | 国家自然科学基金资助项目(50978208) |
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| 摘 要： | 以微波无极紫外灯为光源,P25型TiO2为催化剂,研究了微波反应器中茜素绿(AG)的光催化降解性能,考察了染料初始浓度及pH对降解效率的影响,利用ESI电子喷雾质谱和离子色谱测定了茜素绿降解的中间产物,并对产物的可生化性进行了分析。结果表明,微波/紫外/二氧化钛体系拓宽了染料浓度和pH的适用范围。降解后生成了大量小分子物质,可生化性得到了大幅度的提高,BOD5/COD值从反应前的0.0959增加到了0.40。
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| 关 键 词： | 微波无极紫外灯 光催化 茜素绿 降解 |
| 收稿时间： | 2014-03-25 |
Activity and products analysis of alizarin green photocatalytic degradation with microwave powered electrodeless discharged lamp |
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| Xiong Zhongduo;Cheng Qiang;Shi Wei;Xu Aihua;Xia Dongsheng;Zeng Qingfu.Activity and products analysis of alizarin green photocatalytic degradation with microwave powered electrodeless discharged lamp[J].Techniques and Equipment for Environmental Pollution Control,2014,8(12):5185-5190. |
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| Authors: | Xiong Zhongduo;Cheng Qiang;Shi Wei;Xu Aihua;Xia Dongsheng;Zeng Qingfu |
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| Institution: | 1. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; 2. Engineering Research Center for Clean Production of Dyeing and Printing, Ministry of Education, Wuhan Textile University, Wuhan 430200, China |
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| Abstract: | The photocatalytic degradation of alizarin green (AG) was investigated in aqueous TiO2 suspensions under UV-Vis irradiation by a microwave discharged electrodeless lamp (MDEL). The effect of dye concentration and initial solution pH on the rate of AG degradation was studied. The intermediate products were analyzed by electrospray ionization mass spectrometry and ionic chromatography. It was found that MW/UV/TiO2 system showed a strong softening effect on the parameters and the reactions can be carried out over a wide range of conditions. Large amount of small mole weight products was formed during the reaction. Moreover, the catalytic system could significantly improve the biodegradability of the dye. The BOD5/COD ratio markedly increased from 0.0959 to 0.40. |
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| Keywords: | microwave discharged electrodeless lamp photocatalysis alizarin green degradation |
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