PMID- 27810532 OWN - NLM STAT- MEDLINE DCOM- 20170329 LR - 20181202 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 168 DP - 2017 Feb TI - Mechanochemical remediation of PCB contaminated soil. PG - 333-340 LID - S0045-6535(16)31458-8 [pii] LID - 10.1016/j.chemosphere.2016.10.073 [doi] AB - Soil contaminated by polychlorinated biphenyls (PCBs) is a ubiquitous problem in the world, which can cause significant risks to human health and the environment. Mechanochemical destruction (MCD) has been recognized as a promising technology for the destruction of persistent organic pollutants (POPs) and other organic molecules in both solid waste and contaminated soil. However, few studies have been published about the application of MCD technology for the remediation of PCB contaminated soil. In the present study, the feasibility of destroying PCBs in contaminated soil by co-grinding with and without additives in a planetary ball mill was investigated. After 4 h milling time, more than 96% of PCBs in contaminated soil samples were destroyed. The residual concentrations of PCBs decreased from 1000 mg/kg to below the provisional Basel Convention limit of less than 50 mg/kg. PCDD/F present in the original soil at levels of 4200 ng TEQ/kg was also destroyed with even a slightly higher destruction efficiency. Only minor dechlorinations of the PCBs were observed and the destruction of the hydrocarbon skeleton is proposed as the main degradation pathway of PCBs. CI - Copyright (c) 2016 Elsevier Ltd. All rights reserved. FAU - Wang, Haizhu AU - Wang H AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China; State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun, 130022, PR China. FAU - Hwang, Jisu AU - Hwang J AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. FAU - Huang, Jun AU - Huang J AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. Electronic address: huangjun@tsinghua.edu.cn. FAU - Xu, Ying AU - Xu Y AD - School of Physics, Northeast Normal University, Changchun, 130024, PR China. FAU - Yu, Gang AU - Yu G AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. FAU - Li, Wenchao AU - Li W AD - CSD IDEA (Beijing) Environmental Test & Analysis Co. Ltd, Beijing, 100192, PR China. FAU - Zhang, Kunlun AU - Zhang K AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. FAU - Liu, Kai AU - Liu K AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. FAU - Cao, Zhiguo AU - Cao Z AD - State Key Joint Laboratory of Environment Simulation and Pollution Control (SKJLESPC), Beijing Key Laboratory for Emerging Organic Contaminants Control, School of Environment, POPs Research Center, Tsinghua University, Beijing, 100084, PR China. FAU - Ma, Xiaohui AU - Ma X AD - State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun, 130022, PR China. FAU - Wei, Zhipeng AU - Wei Z AD - State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun, 130022, PR China. FAU - Wang, Quhui AU - Wang Q AD - State Key Laboratory of High Power Semiconductor Laser, Changchun University of Science and Technology, Changchun, 130022, PR China. LA - eng PT - Journal Article DEP - 20161027 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 0 (Soil) RN - 0 (Soil Pollutants) RN - 24H4NWX5CO (Kaolin) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - China MH - Environmental Pollution/prevention & control MH - Humans MH - Kaolin MH - Polychlorinated Biphenyls/analysis/*chemistry MH - Soil/*chemistry MH - Soil Pollutants/*chemistry OTO - NOTNLM OT - Dechlorination OT - Mechanochemical technology OT - PCB contaminated soil EDAT- 2016/11/05 06:00 MHDA- 2017/03/31 06:00 CRDT- 2016/11/05 06:00 PHST- 2016/08/16 00:00 [received] PHST- 2016/10/18 00:00 [revised] PHST- 2016/10/20 00:00 [accepted] PHST- 2016/11/05 06:00 [pubmed] PHST- 2017/03/31 06:00 [medline] PHST- 2016/11/05 06:00 [entrez] AID - S0045-6535(16)31458-8 [pii] AID - 10.1016/j.chemosphere.2016.10.073 [doi] PST - ppublish SO - Chemosphere. 2017 Feb;168:333-340. doi: 10.1016/j.chemosphere.2016.10.073. Epub 2016 Oct 27.