| 水溶液中4-氯酚的微波辅助光化学降解 |
| 摘要点击 1658 全文点击 1603 投稿时间：2003-07-16 修订日期：2003-09-15 |
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| 中文关键词 微波 无极紫外灯 4-氯酚 光化学反应 |
| 英文关键词 4-chlorophenol microwave electrodeless discharge lamp photochemical reaction |
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| 中文摘要 |
| 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. |
| 英文摘要 |
| 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. |
