DOPAC/Fe3+/H2O2体系降解罗丹明B的研究  

Degradation of Rhodamine B by 3,4-dihydroxyphenylacetic acid/Fe3+/H2O2

作　　者：李美超[1] 黄琴 马建青 文岳中[2] LI Meichao;HUANG Qin;MA Jianqing;WEN Yuezhong(College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China;College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江工业大学化学工程学院,浙江杭州310014 [2]浙江大学环境与资源学院,浙江杭州310058

出　　处：《浙江工业大学学报》2019年第5期495-499,519,共6页Journal of Zhejiang University of Technology

摘　　要：Fenton氧化法是目前用于降解有机污染物的有效手段之一。以3,4-二羟基苯乙酸参与的类Fenton体系(DOPAC/Fe^3+/H 2O 2)为研究对象,对污染物进行降解,并对初始pH值、DOPAC/Fe^3+浓度比、H 2O 2浓度进行优化。结果表明:DOPAC/Fe^3+/H 2O 2体系对污染物有较优的去除效果。在pH为3、DOPAC和Fe^3+浓度比为1∶1、H 2O 2浓度为2 mmol/L时,在15 min内罗丹明B在DOPAC/Fe^3+/H 2O2体系中的去除率可达到99%以上,TOC去除率为62%。在该过程中,DOPAC也随污染物一起被矿化,避免了对环境的二次污染,体现了DOPAC/Fe 3+/H 2O 2体系的环境友好性。Fenton oxidation is an efficient technique for degradation of organic pollutants.In this work,the degradation effect of contaminants in aqueous solutions by 3,4-dihydroxyphenylacetic acid(DOPAC)involved Fenton-like system(DOPAC/Fe^3+/H 2O 2)was investigated.Optimization experiments were conducted,and the results showed that when molar ratio of DOPAC to Fe^3+,initial pH and the concentration of H2O2 was 1∶1,3 and 2 mmol/L,respectively,Rhodamine B could be rapidly degraded in 15 min with a removal rate of 99%and TOC removal efficiency of 62%.Meanwhile,DOPAC could also be effectively mineralized in this degradation process,showing an environmental benignity of DOPAC/Fe^3+/H 2O 2 system.

关 键 词：FENTON氧化法 3 4-二羟基苯乙酸 去除率 罗丹明B 

分 类 号：X52[环境科学与工程—环境工程]