Factors that have an effect on degradation of diclofenac in aqueous solution by gamma ray irradiation |
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| Authors: | Liu Qun Luo Xingzhang Zheng Zheng Zheng Binguo Zhang Jibiao Zhao Yongjun Yang Xiaoying Wang Jiaqi Wang Lianhong |
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| Institution: | (1) State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, 210093, People’s Republic of China;(2) Department of Environmental Science and Engineering, Fudan University, 220 Handan Road, Shanghai, 200433, People’s Republic of China |
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| Abstract: | Purpose Gamma ray irradiation is considered as an effective way to degrade diclofenac. However, due to the extensive coexisting substances
in natural waters, the use of gamma ray irradiation for degradation is often influenced by multiple factors. The various factors
that affect degradation efficiency, such as initial diclofenac concentration, initial pH, and the concentration of the additives
including H2O2 (·OH radical promoter), CH3OH (·OH radical scavenger), thiourea (·OH, H·, and eaq− scavenger), humic acid, and NO3− (coexisting substances in natural waters), are investigated. Furthermore, possible intermediate products are identified and
corresponding transformation pathways are proposed. |
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