PMID- 37517667 OWN - NLM STAT- MEDLINE DCOM- 20230824 LR - 20230824 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 339 DP - 2023 Oct TI - In five wastewater treatment plants in Xinjiang, China: Removal processes for illicit drugs, their occurrence in receiving river waters, and ecological risk assessment. PG - 139668 LID - S0045-6535(23)01935-5 [pii] LID - 10.1016/j.chemosphere.2023.139668 [doi] AB - Residues of illicit drugs are frequently detected in wastewater, but data on their removal efficiency by wastewater treatment plants (WWTPs) and the ecological risks to the aquatic environment are lacking in this study. The research evaluates the residues, mass load, drug removal efficiency, and risk assessment of illicit drugs in WWTPs and aquatic environments (lakes) in Xinjiang, China. Initially, the concentration (incidence) and mass load of 10 selected illicit drugs were analyzed through wastewater analysis. The detected substances included methamphetamine (METH), morphine (MOR), 3,4-methylenedioxy methamphetamine (MDMA), methadone (MTD), cocaine (COC), benzoylecgonine (BE), ketamine (KET), and codeine (COD), with concentrations ranging from 0.11 +/- 0.01 ng/L (methadone) to 48.26 +/- 25.05 ng/L (morphine). Notably, morphine (59.74 +/- 5.82 g/day) and methamphetamine (41.81 +/- 4.91 g/day) contributed significantly to the WWTPs. Next, the drug removal efficiency by different sewage treatment processes was ranked as follows: Anaerobic-Oxic (A/O) combined Membrane Bio-Reactor (MBR) treatment process > Oxidation ditch treatment process > Anaerobic-Anoxic-Oxic (A2/O) treatment process > Anaerobic-Anoxic-Oxic combined Membrane Bio-Reactor treatment process. Finally, the research reviewed the concentration and toxicity assessments of these substances in the aquatic environment (lakes). The results indicated that Lake1 presented a medium risk level concerning the impact of illicit drugs on the aquatic environment, whereas the other lakes exhibited a low risk level. As a result, it is recommended to conduct long-term monitoring and source analysis of illicit drugs, specifically in Lake1, for further investigation. In conclusion, to enhance the understanding of the effects of illicit drugs on the environment, future research should expand the list of target analytes. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Zhao, Jie AU - Zhao J AD - School of Chemistry and Chemical Engineering, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China. FAU - Lu, Jianjiang AU - Lu J AD - School of Chemistry and Chemical Engineering, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China. Electronic address: lujianjiang2021@163.com. FAU - Zhao, Haijun AU - Zhao H AD - The First Affiliated Hospital, School of Medicine, Shihezi University, Shihezi, 832003, China. FAU - Yan, Yujun AU - Yan Y AD - School of Chemistry and Chemical Engineering, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China. FAU - Dong, Hongyu AU - Dong H AD - School of Chemistry and Chemical Engineering, Key Laboratory of Environmental Monitoring and Pollutant Control of Xinjiang Bingtuan, Shihezi University, Shihezi, 832003, China. LA - eng PT - Journal Article DEP - 20230728 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Wastewater) RN - 0 (Illicit Drugs) RN - 0 (Water Pollutants, Chemical) RN - 44RAL3456C (Methamphetamine) RN - 0 (Morphine Derivatives) SB - IM MH - Wastewater MH - Waste Disposal, Fluid/methods MH - *Illicit Drugs/analysis MH - Rivers MH - *Water Pollutants, Chemical/analysis MH - *Methamphetamine/analysis MH - *Water Purification/methods MH - Risk Assessment MH - Morphine Derivatives/analysis MH - China OTO - NOTNLM OT - Ecological risk assessment OT - Illicit drugs OT - Removal efficiency OT - Wastewater-based epidemiology COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/07/31 00:41 MHDA- 2023/08/24 06:42 CRDT- 2023/07/30 19:17 PHST- 2023/05/23 00:00 [received] PHST- 2023/07/24 00:00 [revised] PHST- 2023/07/27 00:00 [accepted] PHST- 2023/08/24 06:42 [medline] PHST- 2023/07/31 00:41 [pubmed] PHST- 2023/07/30 19:17 [entrez] AID - S0045-6535(23)01935-5 [pii] AID - 10.1016/j.chemosphere.2023.139668 [doi] PST - ppublish SO - Chemosphere. 2023 Oct;339:139668. doi: 10.1016/j.chemosphere.2023.139668. Epub 2023 Jul 28.