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Degradation of imidacloprid by UV-activated persulfate and peroxymonosulfate processes: Kinetics, impact of key factors and degradation pathway.
Ecotoxicol Environ Saf. 2020 Jan 15; 187:109779.EE

Abstract

UV-activated persulfate (UV/PS) and peroxymonosulfate (UV/PMS) processes as alternative methods for removal of imidacloprid (IMP) were conducted for the first time. The reaction rate constants between IMP and the sulfate or hydroxyl radical were calculated as 2.33×109 or 2.42×1010 M-1 s-1, respectively. The degradation of IMP was greatly improved by UV/PS and UV/PMS compared with only UV or oxidant. At any given dosage, UV/PS achieved higher IMP removal rate than UV/PMS. The pH range affecting the degradation in the UV/PS and UV/PMS systems were different in the ranges of 6-8 and 9 to 10. SO42-, F- and NO3- had no obvious effect on the degradation in the UV/PS and UV/PMS systems. CO32- and PO43- inhibited the degradation of IMP in the UV/PS system, while they enhanced the degradation in the UV/PMS system. Algae organic matters (AOM) were used to consider the impact of the degradation of IMP for the first time. The removal of IMP were restrained by both AOM and natural organic matters. The higher removal rate of IMP demonstrated that both UV/PS and UV/PMS were suitable for treating the water containing IMP, while UV/PS was cost-effective than UV/PMS based on the total cost calculation. Finally, the degradation pathways of IMP were proposed.

Authors+Show Affiliations

College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201600, China. Electronic address: wqfang2010@126.com.College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201600, China.College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201600, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China; Shanghai Municipal Engineering Design Institute(Group)Co.,LTD, China.Shanghai Municipal Engineering Design Institute(Group)Co.,LTD, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China; China Academy of Urban Planning & Design, Beijing, 100037, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China.State Key Laboratory of Pollution Control Reuse, Tongji University, Shanghai, 200092, China.College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou, 310014, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31639643

Citation

Wang, Qiongfang, et al. "Degradation of Imidacloprid By UV-activated Persulfate and Peroxymonosulfate Processes: Kinetics, Impact of Key Factors and Degradation Pathway." Ecotoxicology and Environmental Safety, vol. 187, 2020, p. 109779.
Wang Q, Rao P, Li G, et al. Degradation of imidacloprid by UV-activated persulfate and peroxymonosulfate processes: Kinetics, impact of key factors and degradation pathway. Ecotoxicol Environ Saf. 2020;187:109779.
Wang, Q., Rao, P., Li, G., Dong, L., Zhang, X., Shao, Y., Gao, N., Chu, W., Xu, B., An, N., & Deng, J. (2020). Degradation of imidacloprid by UV-activated persulfate and peroxymonosulfate processes: Kinetics, impact of key factors and degradation pathway. Ecotoxicology and Environmental Safety, 187, 109779. https://doi.org/10.1016/j.ecoenv.2019.109779
Wang Q, et al. Degradation of Imidacloprid By UV-activated Persulfate and Peroxymonosulfate Processes: Kinetics, Impact of Key Factors and Degradation Pathway. Ecotoxicol Environ Saf. 2020 Jan 15;187:109779. PubMed PMID: 31639643.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of imidacloprid by UV-activated persulfate and peroxymonosulfate processes: Kinetics, impact of key factors and degradation pathway. AU - Wang,Qiongfang, AU - Rao,Pinhua, AU - Li,Guanghui, AU - Dong,Lei, AU - Zhang,Xin, AU - Shao,Yisheng, AU - Gao,Naiyun, AU - Chu,Wenhai, AU - Xu,Bin, AU - An,Na, AU - Deng,Jing, Y1 - 2019/10/19/ PY - 2019/05/31/received PY - 2019/10/03/revised PY - 2019/10/06/accepted PY - 2019/10/23/pubmed PY - 2020/2/1/medline PY - 2019/10/23/entrez KW - Degradation KW - Imidacloprid KW - Kinetics KW - Peroxymonosulfate KW - Persulfate KW - UV SP - 109779 EP - 109779 JF - Ecotoxicology and environmental safety JO - Ecotoxicol. Environ. Saf. VL - 187 N2 - UV-activated persulfate (UV/PS) and peroxymonosulfate (UV/PMS) processes as alternative methods for removal of imidacloprid (IMP) were conducted for the first time. The reaction rate constants between IMP and the sulfate or hydroxyl radical were calculated as 2.33×109 or 2.42×1010 M-1 s-1, respectively. The degradation of IMP was greatly improved by UV/PS and UV/PMS compared with only UV or oxidant. At any given dosage, UV/PS achieved higher IMP removal rate than UV/PMS. The pH range affecting the degradation in the UV/PS and UV/PMS systems were different in the ranges of 6-8 and 9 to 10. SO42-, F- and NO3- had no obvious effect on the degradation in the UV/PS and UV/PMS systems. CO32- and PO43- inhibited the degradation of IMP in the UV/PS system, while they enhanced the degradation in the UV/PMS system. Algae organic matters (AOM) were used to consider the impact of the degradation of IMP for the first time. The removal of IMP were restrained by both AOM and natural organic matters. The higher removal rate of IMP demonstrated that both UV/PS and UV/PMS were suitable for treating the water containing IMP, while UV/PS was cost-effective than UV/PMS based on the total cost calculation. Finally, the degradation pathways of IMP were proposed. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/31639643/Degradation_of_imidacloprid_by_UV_activated_persulfate_and_peroxymonosulfate_processes:_Kinetics_impact_of_key_factors_and_degradation_pathway_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(19)31110-8 DB - PRIME DP - Unbound Medicine ER -