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Oxidation of flumequine in aqueous solution by UV-activated peroxymonosulfate: Kinetics, water matrix effects, degradation products and reaction pathways.
Chemosphere. 2019 Dec; 237:124484.C

Abstract

The degradation of flumequine (FLU) in aqueous solution by ultraviolet (UV)-activated peroxymonosulfate (PMS) was investigated in this work. Under the conditions of [PMS]0:[FLU]0 = 1:1, T = 25 ± 2 °C, pH = 7.0 ± 0.1, nearly complete removal of FLU was achieved after 60 min. The effects of various operating parameters, including oxidant doses, pH, the presence of typical ions (NH4+、Mg2+、Fe3+、Cl-、NO3-、HCO3-) and humic acid were evaluated. It was found that the pseudo-first-order rate constants of FLU degradation increased with increasing PMS dosage and decreasing solution pH. The presence of Mg2+ could accelerate FLU removal, while Fe3+, HCO3-, NO3- and HA inhibited the reaction. Moreover, the degradation of FLU in different water matrices were also explored, and the removal followed the order of Tap water > Ultrapure water > River water > Secondary clarifier effluent. According to the control and radical quenching experiment results, direct photolysis and reactive radicals (SO4- and HO) contributed mainly to FLU degradation in the UV/PMS system. Initial FLU molecule underwent reactions such as hydroxylation, hydroxyl substitution, demethylation, decarboxylation/decarbonylation and ring opening, leading to the formation of nineteen oxidation products. The effective degradation by UV/PMS suggests a feasible technology for treating FLU in waters and wastewaters.

Authors+Show Affiliations

State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China.State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China.State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China.State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China.King Saud University, College of Science, Zoology Department, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.King Saud University, College of Science, Zoology Department, P.O. Box 2455, Riyadh, 11451, Saudi Arabia.State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Jiangsu, Nanjing, 210023, PR China. Electronic address: wangzy@nju.edu.cn.Jiangsu Provincial Center for Disease Control and Prevention, No.172 Jiangsu Road, Jiangsu, Nanjing, 210009, PR China. Electronic address: huozong123@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31394442

Citation

Qi, Yumeng, et al. "Oxidation of Flumequine in Aqueous Solution By UV-activated Peroxymonosulfate: Kinetics, Water Matrix Effects, Degradation Products and Reaction Pathways." Chemosphere, vol. 237, 2019, p. 124484.
Qi Y, Qu R, Liu J, et al. Oxidation of flumequine in aqueous solution by UV-activated peroxymonosulfate: Kinetics, water matrix effects, degradation products and reaction pathways. Chemosphere. 2019;237:124484.
Qi, Y., Qu, R., Liu, J., Chen, J., Al-Basher, G., Alsultan, N., Wang, Z., & Huo, Z. (2019). Oxidation of flumequine in aqueous solution by UV-activated peroxymonosulfate: Kinetics, water matrix effects, degradation products and reaction pathways. Chemosphere, 237, 124484. https://doi.org/10.1016/j.chemosphere.2019.124484
Qi Y, et al. Oxidation of Flumequine in Aqueous Solution By UV-activated Peroxymonosulfate: Kinetics, Water Matrix Effects, Degradation Products and Reaction Pathways. Chemosphere. 2019;237:124484. PubMed PMID: 31394442.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Oxidation of flumequine in aqueous solution by UV-activated peroxymonosulfate: Kinetics, water matrix effects, degradation products and reaction pathways. AU - Qi,Yumeng, AU - Qu,Ruijuan, AU - Liu,Jiaoqin, AU - Chen,Jing, AU - Al-Basher,Gadah, AU - Alsultan,Nouf, AU - Wang,Zunyao, AU - Huo,Zongli, Y1 - 2019/07/31/ PY - 2019/05/11/received PY - 2019/07/11/revised PY - 2019/07/29/accepted PY - 2019/8/9/pubmed PY - 2019/8/9/medline PY - 2019/8/9/entrez KW - Flumequine KW - Kinetics KW - Reaction pathways KW - UV/PMS KW - Water matrices SP - 124484 EP - 124484 JF - Chemosphere JO - Chemosphere VL - 237 N2 - The degradation of flumequine (FLU) in aqueous solution by ultraviolet (UV)-activated peroxymonosulfate (PMS) was investigated in this work. Under the conditions of [PMS]0:[FLU]0 = 1:1, T = 25 ± 2 °C, pH = 7.0 ± 0.1, nearly complete removal of FLU was achieved after 60 min. The effects of various operating parameters, including oxidant doses, pH, the presence of typical ions (NH4+、Mg2+、Fe3+、Cl-、NO3-、HCO3-) and humic acid were evaluated. It was found that the pseudo-first-order rate constants of FLU degradation increased with increasing PMS dosage and decreasing solution pH. The presence of Mg2+ could accelerate FLU removal, while Fe3+, HCO3-, NO3- and HA inhibited the reaction. Moreover, the degradation of FLU in different water matrices were also explored, and the removal followed the order of Tap water > Ultrapure water > River water > Secondary clarifier effluent. According to the control and radical quenching experiment results, direct photolysis and reactive radicals (SO4- and HO) contributed mainly to FLU degradation in the UV/PMS system. Initial FLU molecule underwent reactions such as hydroxylation, hydroxyl substitution, demethylation, decarboxylation/decarbonylation and ring opening, leading to the formation of nineteen oxidation products. The effective degradation by UV/PMS suggests a feasible technology for treating FLU in waters and wastewaters. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/31394442/Oxidation_of_flumequine_in_aqueous_solution_by_UV_activated_peroxymonosulfate:_Kinetics_water_matrix_effects_degradation_products_and_reaction_pathways_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(19)31708-4 DB - PRIME DP - Unbound Medicine ER -