PMID- 32674672 OWN - NLM STAT- MEDLINE DCOM- 20220128 LR - 20221207 IS - 1479-487X (Electronic) IS - 0959-3330 (Linking) VI - 43 IP - 4 DP - 2022 Jan TI - Degradation of 2,4-dichlorophenol by cathodic microarc plasma electrolysis: characteristics and mechanisms. PG - 572-584 LID - 10.1080/09593330.2020.1797896 [doi] AB - In this work, we used cathodic microarc plasma electrolysis (CMPE) to degrade 2,4-dichlorophenol (2,4-DCP) in simulated wastewater. By investigating and comparing the removal efficiencies and chemical oxygen demand (COD) during the degradation process, higher bath voltage and alkaline condition were considered as more suitable for the 2,4-DCP decomposition. Higher initial 2,4-DCP concentration was attributed to the increase in the utilisation of the energy input. The plasma characteristics during CMPE were studied by optical emission spectroscopy (OES). It was found that the 2,4-DCP directly participated in the plasma discharge process. Furthermore, by studying the evolution of intermediate products at different experimental parameters, it was found that the existence of Cl(-) played an important role in the opening of benzene ring, which activated the ortho-substitutions of hydroxyl, meanwhile accelerated the p-substitutions. The instantaneous high temperature and high pressure and the Cl(-) that were generated and driven by cathodic plasma made the decomposition of 2,4-DCP much quicker. FAU - Zhang, Yifan AU - Zhang Y AUID- ORCID: 0000-0002-1542-2957 AD - Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, People's Republic of China. AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Yu, Jiahao AU - Yu J AD - Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, People's Republic of China. AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Liu, Guijun AU - Liu G AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Jin, Xiaoyue AU - Jin X AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Liu, Ruihong AU - Liu R AD - Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, People's Republic of China. AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Du, Jiancheng AU - Du J AD - Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, People's Republic of China. AD - Beijing Radiation Center, Beijing, People's Republic of China. FAU - Xue, Wenbin AU - Xue W AUID- ORCID: 0000-0003-1876-8539 AD - Key Laboratory of Beam Technology of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, People's Republic of China. AD - Beijing Radiation Center, Beijing, People's Republic of China. LA - eng PT - Journal Article DEP - 20200731 PL - England TA - Environ Technol JT - Environmental technology JID - 9884939 RN - 0 (Chlorophenols) RN - 0 (Phenols) RN - 0 (Waste Water) RN - 0 (Water Pollutants, Chemical) RN - R669TG1950 (2,4-dichlorophenol) SB - IM MH - *Chlorophenols MH - Electrolysis MH - Phenols MH - Wastewater MH - *Water Pollutants, Chemical OTO - NOTNLM OT - 2,4-DCP degradation OT - Cathodic microarc plasma electrolysis OT - chloride ion OT - degradation mechanism OT - efficiency EDAT- 2020/07/18 06:00 MHDA- 2022/01/29 06:00 CRDT- 2020/07/18 06:00 PHST- 2020/07/18 06:00 [pubmed] PHST- 2022/01/29 06:00 [medline] PHST- 2020/07/18 06:00 [entrez] AID - 10.1080/09593330.2020.1797896 [doi] PST - ppublish SO - Environ Technol. 2022 Jan;43(4):572-584. doi: 10.1080/09593330.2020.1797896. Epub 2020 Jul 31.