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(SO4-·),hydroxyl radicals(·OH)and singlet oxygen(1O2),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.
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