微波协同活性炭强化铜类Fenton法的作用机理  

Mechanism of strengthening copper-based Fenton process by microwave synergistic activated carbon

作　　者：陈红英[1] 单佳琪 郑贾娜 CHEN Hongying;SHAN Jiaqi;ZHENG Jiana(College of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学土木工程学院,浙江杭州310023

出　　处：《浙江工业大学学报》2023年第5期567-571,590,共6页Journal of Zhejiang University of Technology

基　　金：浙江省自然科学基金资助项目(Y506032)。

摘　　要：以黄连素(Berberine,BER)废水为目标污染物,采用多种处理方法,通过比较其去除效果、pH值的适用范围探究微波微波协同活性炭强化铜类Fenton体系的优势,并进行·OH生成量测定、紫外-可见光光谱扫描和三维荧光分析,研究该体系的作用机理。铜类Fenton法(pH值为6~8)和微波-活性炭-铜类Fenton法(pH值为5~9)均能有效拓宽Fenton法的pH值适用范围。铜类Fenton法、活性炭-铜类Fenton法、微波-铜类Fenton法以及微波-活性炭-铜类Fenton法均遵循·OH的反应机理,·OH生成量随pH值的变化具有相似的变化趋势,在pH值为7时达到最大值。单独活性炭虽然不能促进铜类Fenton法中·OH的生成,但与微波辐照协同能够促使H_(2)O_(2)发生O—O键均裂生成大量强氧化性的·OH。微波-活性炭-铜类Fenton法不仅能大大缩短反应时间,减少药剂投加量,而且能使大分子物质分解为小分子物质,最终降解成CO_(2)和H_(2)O,实现有机物的有效矿化。Taking berberine(BER)wastewater as the target pollutant,by comparing the removal effect of different treatment methods,the applicable range of pH value,to explore the advantages of microwave microwave synergistic activated carbon enhanced copper Fenton system,and conduct·OH production measurement,UV-Vis spectral scanning and 3D fluorescence analysis,to study the mechanism of the system.Both the copper-based(pH value of 6-8)and the microwave-activated carbon-copper based Fenton method(pH value of 5-9)can effectively broaden the applicable range of pH value.All the copper based Fenton method with or without activated carbon and microwave assistance follow the reaction mechanism of·OH,which production has a similar trend with pH,reaching a maximum at pH 7.Although the activated carbon only cannot promote the formation of·OH,but in cooperation with microwave irradiation,it can promote the homolytic cleavage of the O—O bond of H_(2)O_(2)to generate a large quantity of·OH.The microwave-activated carbon-copper based Fenton method can not only greatly shorten the reaction time and reduce the dosage of chemicals,but also can decompose macromolecular substances into small molecular substances,and finally degrade into CO_(2) and H_(2)O to achieve effective mineralization of organic compounds.

关 键 词：铜类Fenton法 微波 活性炭 黄连素 

分 类 号：X703.1[环境科学与工程—环境工程]