微波与MnO_2协同处理喹啉模拟废水的研究  

Treating wastewater simulated with quinoline through microwave irradiation accompanied by MnO_2

作　　者：任大军[1] 周思思[1] 刘剑[1] 张元元[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《华中科技大学学报（自然科学版）》2012年第10期91-94,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家科技支撑计划资助项目(2012BAC02B04);湖北省自然科学基金资助项目(2010CDB03502)

摘　　要：以MnO2为微波敏化剂,喹啉为代表污染物,考察了MnO2的质量浓度、pH值、微波功率和辐射时间对喹啉模拟废水去除效果的影响并得到了最佳工艺条件.同时,分析了微波辐射处理喹啉模拟废水的作用机理.结果表明:喹啉在MnO2表面是通过吸附-氧化协同作用被迅速降解,其氧化过程符合一级动力学规律;在喹啉初始质量浓度为100mg/L的条件下,实验的最佳工艺条件是MnO2质量浓度为0.7g/L、pH值为5、微波功率为500W和辐射时间为5min.MnO2 was selected as a microwave absorbent and quinoline was used as a typical pollutant. The effective factors such as the concentration of MnO2, pH value, microwave power and irradiation time were investigated, and the optimal conditions of the process were achieved. Besides, the removal mechanism of quinoline was analyzed. The results show that quinoline are rapidly degraded by the effect of adsorption-oxidation on the surface of MnO2 and the process of treatment approximately ac- cords with the first-order reaction. Under the conditions which the quinoline is 100 mg/L, the optimal conditions of treatment are MnO2 dosage 0.7 g/L, 5 of initial pH value, microwave power 500 W and irradiation time 5 min.

关 键 词：废水处理 微波辐射 喹啉 MNO2 催化氧化 

分 类 号：X703[环境科学与工程—环境工程]