LIU Ru-peng,HAO Yu-you,LUO Cong-wei,et al.Performance and Mechanism of Chloramphenicol Degradation in Aqueous Solution by Ultraviolet/Monochloroamine[J].China Water & Wastewater,2021,37(9 9):51-56.
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Performance and Mechanism of Chloramphenicol Degradation in Aqueous Solution by Ultraviolet/Monochloroamine

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 9 9 Page: 51-56 Column: Date of publication: 2021-05-01
Author(s):
LIU Ru-peng1; HAO Yu-you2; LUO Cong-wei3; WU Dao-ji3; CHENG Xiao-xiang3
(1. Resources and Environment Innovation Institute, Shandong Jianzhu University, Jinan 250101， China; 2. Juxian Urban and Rural Constrction Service Center, Juxian 276599， China; 3. College of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101， China)
Keywords:
UV; monochloroamine(NH2Cl); chloramphenicol (CAP); degradation kinetics; influencing factor; DBPs
Abstract:
Chloramphenicol (CAP),a typical antibiotic,was degraded by an advanced oxidation technology—ultraviolet/monochloroamine (UV/NH2Cl), and the degradation kinetics, influencing factors and disinfection byproducts(DBPs) formation were investigated. Compared with single UV process, the addition of NH2Cl could significantly improve the degradation rate of CAP, and the pseudo-first-order kinetic rate constant could reach 0.017 2 min-1. Increasing NH2Cl concentration was conducive to improve the degradation efficiency of CAP. However, with the increase of pH value, the degradation rate of CAP increased first and then decreased, and the degradation rate reached the maximum when the pH value was 7. In addition, the presence of some inorganic anions （Cl-，Br-，HCO3-） and natural organic matter (NOM) would inhibit CAP removal to different degrees. Compared with single NH2Cl pre-oxidation method, UV/NH2Cl pre-oxidation could decrease the production of trichloronitromethane, dichloroacetonitrile, dichloroacetamide and trichloroacetamide in the subsequent chloramine disinfection process.
Last Update: 2021-05-01