PMID- 36464018 OWN - NLM STAT- MEDLINE DCOM- 20230111 LR - 20230111 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 313 DP - 2023 Feb TI - Mechanochemical remediation of the chlorinated compounds contaminated soil depending on the minerals inside-the most reasonable approach. PG - 137449 LID - S0045-6535(22)03942-X [pii] LID - 10.1016/j.chemosphere.2022.137449 [doi] AB - This study explored a possible destruction of hexachlorobenzene (HCB) as example of persistent organic pollutants (POPs) as well as the dechlorination mechanism by directly using minerals in the soil, such as antigorite, talc and olivine. Compared with a stable quartz phase of SiO(2), all three Mg silicate minerals demonstrated certain degrading capacity for HCB with different efficiency order as: antigorite > talc > olivine > SiO(2) at 2 h of milling time. Interestingly, olivine exhibited a better performance than antigorite at 4 h of milling time, giving destruction percentage of 92.7% over 89.0% even at high concentrated HCB up to 5% added. Raman and ESR characterizations of the ball milled sample with olivine indicated the formation of amorphous carbon and graphitic carbon, and the occurrence of free radicals was observed to play an important role in dechlorination and carbonization of HCB. The first identified effectiveness of directly using Mg silicate minerals, allowed no addition of active chemicals during the ball milling, therefore avoided the concern over extrinsic contaminations on the soil. Olivine was further utilized to deal with actual contaminated soil and showed unique advantages on application prospects. CI - Copyright (c) 2022 Elsevier Ltd. All rights reserved. FAU - Yao, Zhenzhen AU - Yao Z AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. FAU - He, Xiaoman AU - He X AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. Electronic address: hexiaoman@whut.edu.cn. FAU - Wang, Qian AU - Wang Q AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. FAU - Wang, Chao AU - Wang C AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. FAU - Shi, Qing AU - Shi Q AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. FAU - Zhang, Qiwu AU - Zhang Q AD - School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan, 430070, China. Electronic address: zhangqw@whut.edu.cn. LA - eng PT - Journal Article DEP - 20221201 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 95548S7QBV (olivine) RN - 0 (Soil Pollutants) RN - 4Z87H0LKUY (Hexachlorobenzene) RN - 0 (Soil) RN - 0 (Asbestos, Serpentine) RN - 7631-86-9 (Silicon Dioxide) RN - 14807-96-6 (Talc) RN - 0 (Minerals) RN - 7440-44-0 (Carbon) SB - IM MH - *Environmental Restoration and Remediation MH - *Soil Pollutants/analysis MH - Hexachlorobenzene/chemistry MH - Soil/chemistry MH - Asbestos, Serpentine MH - Silicon Dioxide MH - Talc MH - Minerals MH - Carbon OTO - NOTNLM OT - Contaminated soil OT - Destruction OT - Mechanochemistry OT - Minerals OT - POPs 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- 2022/12/05 06:00 MHDA- 2023/01/12 06:00 CRDT- 2022/12/04 19:24 PHST- 2022/08/27 00:00 [received] PHST- 2022/11/25 00:00 [revised] PHST- 2022/11/30 00:00 [accepted] PHST- 2022/12/05 06:00 [pubmed] PHST- 2023/01/12 06:00 [medline] PHST- 2022/12/04 19:24 [entrez] AID - S0045-6535(22)03942-X [pii] AID - 10.1016/j.chemosphere.2022.137449 [doi] PST - ppublish SO - Chemosphere. 2023 Feb;313:137449. doi: 10.1016/j.chemosphere.2022.137449. Epub 2022 Dec 1.