摘要
针对卡马西平(CBZ)制药类废水难降解的问题,采用天然黄铜矿(NCP)活化过一硫酸盐(PMS)对CBZ进行降解处理。实验结果表明,在pH=7的条件下,当CBZ初始质量浓度为5.0 mg·L^(-1)时,在NCP和PMS投加量分别为1.0 g·L^(-1)和0.5 g·L^(-1)条件下,反应30 min后CBZ的去除率可以高达82.34%。自由基淬灭试验和EPR分析得出NCP/PMS体系中的主要活性物质是硫酸根自由基(SO_(4)ˉ·)、羟基自由基(·OH)和单线态氧(^(1)O_(2)),阐明了NCP/PMS体系降解CBZ的反应机理及降解路径。研究选用天然黄铜矿作为催化材料,其来源广泛,减少了复杂、耗能的制备过程,对催化PMS降解水中有机微污染物的处理具有一定的指导意义。
Peroxymonosulfate(PMS)activated by natural chalcopyrite(NCP)was used to degrade carbamazepine(CBZ)oxidatively,which was poor degradable,and the effect of operating conditions was observed.The results showed that the CBZ removal rate could be as high as 82.34%after 30 min of reaction under the conditions of the initial CBZ concentration of 5.0 mg×L^(-1),NCP and PMS dosage of 1.0 g×L^(-1)and 0.5 g×L^(-1),respectively.The radical quenching test and EPR analysis indicated that the main reactive substances in the NCP/PMS system were sulfate radicals(SO_(4)^(-)·),hydroxyl radicals(·OH)and singlet oxygen(^(1)O_(2)),and the CBZ degradation mechanism and pathway by NCP/PMS system were proposed.The application of natural chalcopyrite,which has a wide range of sources and does not need energy-consumption processing,as a catalytic material is significant for the degradation of organic pollutants in water using activated PMS.
作者
马翠
路忻
马攀峰
王艳梅
MA Cui;LU Xin;MA Panfeng;WANG Yanmei(North China University of Water Resources and Electric Power,College of Environmental and Municipal Engineering,Zhengzhou 450046,China;Henan Provincial Technical Center for Ecology and Environment,Zhengzhou 450001,China;North China University of Water Resources and Electric Power,College of Water Resources,Zhengzhou 450046,China)
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2024年第1期152-158,共7页
Journal of Chemical Engineering of Chinese Universities
