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高压脉冲放电低温等离子体法降解废水中4-氯酚
引用本文:陈银生,张新胜,袁渭康.高压脉冲放电低温等离子体法降解废水中4-氯酚[J].华东理工大学学报(自然科学版),2002,28(3):232-234,244.
作者姓名:陈银生  张新胜  袁渭康
作者单位:华东理工大学联合化学反应工程研究所,上海,200237
摘    要:考察了多种因素对高压脉冲放电低温等离子体法降解废水中4-氯酚的影响。对降解过程所得的中间产物和终产物进行了分析。结果表明,提高脉冲电压峰值、延长放电时间、无机盐FeSO4的存在均可提高降解效果,自由基清除剂及缓冲剂的存在会显著降低降解效果。对100mg/L4-氯酚废水放电处理240min,是高降解率可达90%以上,降解产物主要有苯酚、对苯二酚、邻苯二酚、对氯邻苯二酚和对苯醌等。当放电时间足够长时,4-氯酚可完全降解为CO2和H2O等无机小分子。

关 键 词:高压脉冲放电  低温等离子体法  降解  废水  4-氯酚
文章编号:1006-3080(2002)03-0232-03

Pulsed High-voltage Discharge Plasma for Degradation of 4-Chlorophenol in Aqueous Solutions
CHEN Yin sheng ,ZHANG Xin sheng,YUAN Wei kang.Pulsed High-voltage Discharge Plasma for Degradation of 4-Chlorophenol in Aqueous Solutions[J].Journal of East China University of Science and Technology,2002,28(3):232-234,244.
Authors:CHEN Yin sheng  ZHANG Xin sheng  YUAN Wei kang
Institution:CHEN Yin sheng *,ZHANG Xin sheng,YUAN Wei kang
Abstract:Effects of some factors were studied on the degradation of 4 chlorophenol in wastewater by pulsed high voltage discharge plasma. Furthermore, the intermediate products of the degradation were identified . The degradation efficiency of 4 chlorophenol could be raised considerably by increasing the peak voltage, prolonging the discharge time and adding FeSO 4 to the wastewater solution. The addition of radical scavenger and buffer could decrease the degradation efficiency of 4 chlorophenol. The maximum degradation efficiency of 100 mg/L 4 chlorophenol was over 90% after discharging for 240 minutes. The main intermediate products were phenol, hydroquinone, catechol, 1,4 benzoquinone and 4 chlorocatechol. The 4 chlorophenol can be mineralized to CO 2 and H 2O by enough time discharge.
Keywords:pulsed high  voltage discharge  plasma  degradation  4  chlorophenol  wastewater treatment
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