| 水溶液中4-氯酚的微波辅助光化学降解 |
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| 引用本文： | 艾智慧,姜军清,杨鹏,周涛,陆晓华.水溶液中4-氯酚的微波辅助光化学降解[J].环境科学,2004,25(4):100-104. |
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| 作者姓名： | 艾智慧 姜军清 杨鹏 周涛 陆晓华 |
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| 作者单位： | 华中科技大学环境科学研究所,武汉,430074;国家电力公司建设研究所,北京,100055 |
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| 基金项目： | 国家高技术研究发展计划(863计划)项目(2002AA601300) |
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| 摘 要： | 研究了微波辅助无极紫外灯(MW/UV)光化学降解4-氯酚(4CP)模拟废水;为了考察溶液中4CP的降解效果,用紫外可见分光光度法(UV-VIS)和离子色谱法(IC)测定了溶液中4CP的降解率和Cl-浓度.结果表明,MW/UV体系中30mg/L 4CP反应120min的降解率由紫外(UV)光解体系的21.56%提高到52.40%.提高溶液的pH值、向体系通入氧气、增强光照度以及外加氧化剂H2O2均能增加水溶液中4CP的降解率.微波辅助光化学降解4CP服从一级反应动力学方程.
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| 关 键 词： | 微波 无极紫外灯 4-氯酚 光化学反应 |
| 文章编号： | 0250-3301(2004)04-0100-05 |
| 收稿时间： | 2003/7/16 0:00:00 |
| 修稿时间： | 2003/9/15 0:00:00 |
Microwave Assisted UV Electrodeless Discharge Lamp Photochemical Degradation of 4-Chlorophenol in Aquatic Solutions |
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| AI Zhi-hui,JIANG Jun-qing,YANG Peng,ZHOU Tao and LU Xiao-hua.Microwave Assisted UV Electrodeless Discharge Lamp Photochemical Degradation of 4-Chlorophenol in Aquatic Solutions[J].Chinese Journal of Environmental Science,2004,25(4):100-104. |
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| Authors: | AI Zhi-hui JIANG Jun-qing YANG Peng ZHOU Tao and LU Xiao-hua |
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| Institution: | Environmental Science Research Institute of HUST, Wuhan 430074, China. |
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| Abstract: | A microwave assisted UV electrodeless discharge lamp system (MW/UV) was used for photo-degradation of 4CP simulated wastewater. In order to evaluate the degradation efficiency of 4CP, UV spectrophotometry and ion chromatography were used for determination of 4CP and Cl- respectively. The degradation rate in MW/UV system was higher than that in the UV system within 120min, which were 52 40% and 21 56% respectively. The degradation efficiency was improved by increasing pH value of the solution, aerating O2 gas, enhancing light intensity, or adding H2O2 oxidant. The degradation of 4CP under MW/UV accords with the first order kinetics equation. |
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| Keywords: | 4-chlorophenol microwave electrodeless discharge lamp photochemical reaction |
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