微波辅助光催化降解水中酚的研究  

Study on microwave assisted photocatalytic degradation of phenol and its derivatives in aqueous solution

作　　者：洪军[1] 孙成[1] 刘亚子[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,南京210093

出　　处：《环境污染治理技术与设备》2006年第5期93-95,共3页Techniques and Equipment for Environmental Pollution Control

基　　金：国家"863"高技术研究发展计划资助项目(2003AA06011000-4)

摘　　要：利用改装的家用微波炉和自制的无电极灯(EDL)试验了5种酚在水溶液中的微波辅助光催化降解效果。结果表明,反应30 m in,微波辅助光催化作用(MW/EDL/TiO2)能去除80%以上的苯酚、间硝基苯酚、对氯苯酚和对甲酚,相应溶液的总有机碳(TOC)均减少70%以上,2-萘酚的去除率为59%,溶液TOC减少54%;微波(MW或MW/TiO2)作用对酚的去除率有一定贡献;对上述5种酚的微波辅助光催化反应动力学进行了初步研究,发现均符合准一级动力学方程。Experimental study on microwave assisted photocatalytic degradation of phenol and its derivatives in aqueous solution was carried out with modified domestic microwave oven and electrodeless discharge lamp （EDL）. Results showed that removal rates for MW/EDL/TiO2 methods after 30 min were more than 80% for phenol, m-nitrophenol, p-chlorophenol and p-cresol, respectively. Removal rates for total organic carbon （TOC） of their solutions were all above 70%. The removal rates for 2-naphthol and TOC of its solution were 59% and 54% , respectively. However, the method of MW or MW/TiO2 had a little removal of phenols. Microwave assisted photocatalytic dagredation of phenol and its derivatives followed pseudo first-order kinetics.

关 键 词：TIO2 无电极灯 动力学 

分 类 号：X703.1[环境科学与工程—环境工程]