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 1 2 0min的降解率由紫外 (UV)光解体系的 2 1 5 6 %提高到 5 2 4 0 % .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H2 O2 均能增加水溶液中 4CP的降解率 .微波辅助光化学降解
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 O 2 gas, enhancing light intensity, or adding H 2O 2 oxidant. The degradation of 4CP under MW/UV accords with the first order kinetics equation.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2004年第4期100-104,共5页
Environmental Science
基金
国家高技术研究发展计划 ( 863计划 )项目( 2 0 0 2AA60 13 0 0 )
关键词
微波
无极紫外灯
4-氯酚
光化学反应
4-chlorophenol
microwave
electrodeless discharge lamp
photochemical reaction
