PMID- 29455352 OWN - NLM STAT- MEDLINE DCOM- 20181101 LR - 20181113 IS - 1614-7499 (Electronic) IS - 0944-1344 (Linking) VI - 25 IP - 12 DP - 2018 Apr TI - Electrokinetic-Fenton remediation of organochlorine pesticides from historically polluted soil. PG - 12159-12168 LID - 10.1007/s11356-018-1479-3 [doi] AB - Soil contamination by persistent organic pollutants (POPs) poses a great threat to historically polluted soil worldwide. In this study, soils were characterized, and organochlorine pesticides contained in the soils were identified and quantified. Individual electrokinetic (IE), EK-Fenton-coupled technologies (EF), and enhanced EK-Fenton treatment (E-1, E-2, and E-3) were applied to remediate soils contaminated with hexachloro-cyclohexane soprocide (HCH) and dichloro-diphenyl-trichloroethane (DDT). Variation of pH, electrical conductivity, and electroosmotic flow was evaluated during the EK-Fenton process. The IE treatment showed low removal efficiency for HCHs (30.5%) and DDTs (25.9%). In the EF treatment, the highest removal level (60.9%) was obtained for alpha-HCH, whereas P,P-DDT was the lowest (40.0%). Low solubility of pollutants impeded the HCH and DDT removal. After enhanced EK-Fenton treatment, final removal of pollutants decreased as follows: beta-HCH (82.6%) > gamma-HCH (81.6%) > alpha-HCH (81.2%) > delta-HCH (80.0%) > P,P-DDD (73.8%) > P,P-DDE (73.1%) > P,P-DDT (72.6%) > O,P-DDT (71.5%). The results demonstrate that EK-Fenton is a promising technology for POP removal in historically polluted soil. FAU - Ni, Maofei AU - Ni M AD - Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, China. AD - University of Chinese Academy of Sciences, Beijing, 100049, China. FAU - Tian, Shulei AU - Tian S AD - Research Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. tianslcraes@126.com. FAU - Huang, Qifei AU - Huang Q AD - Research Institute of Solid Waste Management, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China. huangqf@vip.sina.com. FAU - Yang, Yanmei AU - Yang Y AD - School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing, 400074, China. LA - eng GR - 51178440/National Natural Science Foundation of China/ PT - Journal Article DEP - 20180217 PL - Germany TA - Environ Sci Pollut Res Int JT - Environmental science and pollution research international JID - 9441769 RN - 0 (Fenton's reagent) RN - 0 (Hydrocarbons, Chlorinated) RN - 0 (Pesticides) RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - BBX060AN9V (Hydrogen Peroxide) RN - E1UOL152H7 (Iron) SB - IM MH - China MH - Electrochemical Techniques/*methods MH - Environmental Restoration and Remediation/*methods MH - Hydrocarbons, Chlorinated/*analysis MH - Hydrogen Peroxide/*chemistry MH - Iron/*chemistry MH - Kinetics MH - Pesticides/*analysis MH - Soil/chemistry MH - Soil Pollutants/*analysis OTO - NOTNLM OT - Electrokinetic-Fenton OT - POPs OT - Real polluted soil OT - Soil remediation EDAT- 2018/02/20 06:00 MHDA- 2018/11/02 06:00 CRDT- 2018/02/19 06:00 PHST- 2017/10/19 00:00 [received] PHST- 2018/02/04 00:00 [accepted] PHST- 2018/02/20 06:00 [pubmed] PHST- 2018/11/02 06:00 [medline] PHST- 2018/02/19 06:00 [entrez] AID - 10.1007/s11356-018-1479-3 [pii] AID - 10.1007/s11356-018-1479-3 [doi] PST - ppublish SO - Environ Sci Pollut Res Int. 2018 Apr;25(12):12159-12168. doi: 10.1007/s11356-018-1479-3. Epub 2018 Feb 17.