Photodegradation of bromochloronitromethane under UV irradiation

被引：0
|
作者：
Dai W. [1 ]
Deng L. [1 ]
Xu Y. [1 ]
Wen L. [1 ]
机构：
[1] School of Civil Engineering, Southeast University, Nanjing
来源：
Deng, Lin (dlwhu@163.com) | 1600年 / Southeast University卷 / 50期
关键词：
Bromochloronitromethane(BCNM); Kinetics; Photodegradation; Ultraviolet(UV) irradiation;
D O I：
10.3969/j.issn.1001-0505.2020.04.021
中图分类号：
学科分类号：
摘要：
To study the photodegradation of bromochloronitromethane (BCNM) under ultraviolet (UV) irradiation, the effects of UV light intensity, initial concentration, pH, free chlorine and bromide ions on the photodegradation of BCNM were investigated. The results show that the photodegradation of BCNM increases with the increase in UV light intensity and pH, but decreases with the increase in initial concentration. When free chlorine and bromide ions are added, the photodegradation of BCNM increases with the increase in the concentration of added substances. Besides, when free chlorine is added, BCNM is degraded together with the formation of bromodichloronitromethane (BDCNM), dichloronitromethane (DCNM), chloromethane (CNM), trichloronitromethane (TCNM) and bromonitromethane (BNM). The production increases initially and then decreases with the reaction time and the peak increases with the increase in free chlorine concentration. The photodegradation of BCNM under UV irradiation follows the quasi-first-order reaction kinetics equation when the concentration of BCNM is in the range from 0 to 600 μg/L.This study can help control the production of BCNM during the disinfection of drinking water and wastewater. © 2020, Editorial Department of Journal of Southeast University. All right reserved.
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页码：760 / 766
页数：6
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