微波强化零价铁-芬顿法降解罗丹明B的研究  

Degradation of Rhodamine B by Microwave Enhanced Zero Valent Iron-Fenton Process

作　　者：康娟[1] 周雯[1] 权维强 鞠勇明[1] 

机构地区：[1]环境保护部华南环境科学研究所,广东广州510655 [2]兰州交通大学环境与市政工程学院,甘肃兰州730070

出　　处：《环境科学与技术》2015年第12期205-209,共5页Environmental Science & Technology

基　　金：国家"十二五"科技支撑计划项目(2012BAJ21B07)

摘　　要：在微波的促进作用下,采用零价铁作为Fenton反应的催化剂,对罗丹明B模拟废水进行处理。研究了零价铁投加量、零价铁粒径、微波辐射功率、微波辐射时间、初始pH、H_2O_2投加量等因素对罗丹明B模拟废水中色度和TOC的去除效率的影响。结果表明:在初始pH 5.0,s-Fe^0投加量为3.0 g,粒径为2.0 mm,微波功率为400 W,过氧化氢投加量1.5 m L时,对体积50 m L、浓度20 mg/L的罗丹明B模拟废水色度和TOC去除效率,在8 min时间内分别可达到94.8%、72.8%以上,反应后pH达到7.9,大大减少了出水铁离子浓度。研究结果可为印染废水的处理提供一定参考。Under the promoting effect of microwave,Fenton process using zero-valent iron as catalyst was used for dealing with the chroma and TOC of Rhodamine B simulated wastewater. It studied the influencing factors such as Fe0 dosing amount,Fe0 partical size,microwave processing time,microwave power,initial pH and H_2O_2 dosing amount during the process. Results indicated that at pH 5.0,Fe^0 dosing amount 3.0 g,Fe0 partical size 2.0 mm,microwave power 400 W,H_2O_2 dosing amount 1.5 m L,microwave processing time 8 min,the removal rate of chroma and TOC can reach respectively more than 94.8% and 72.8%,and pH after the reaction was 7.9,which greatly reduced the effluent concentration of iron. The results of research would provide reference for treatment of printing and dyeing wastewater.

关 键 词：微波强化 零价铁 FENTON反应 罗丹明B(Rh B) 

分 类 号：X703.1[环境科学与工程—环境工程]