PMID- 36972874 OWN - NLM STAT- MEDLINE DCOM- 20230414 LR - 20230414 IS - 1879-1298 (Electronic) IS - 0045-6535 (Linking) VI - 327 DP - 2023 Jun TI - Efficient remediation of the field soil contaminated with PAHs by amorphous porous iron material activated peroxymonosulfate. PG - 138516 LID - S0045-6535(23)00783-X [pii] LID - 10.1016/j.chemosphere.2023.138516 [doi] AB - An amorphous porous iron material (FH) was firstly self-synthesized using a simple coprecipitation approach and then utilized to activate peroxymonosulfate (PMS) for the catalytic degradation of pyrene and remediation of PAHs contaminated soil on site. FH exhibited more excellent catalytic activity than traditional hydroxy ferric oxide and possessed stability at a pH range of 3.0-11.0. According to quenching studies and electron paramagnetic resonance (EPR) analyses, non-radicals (Fe(IV) = O and 1O2) were the major reactive oxygen species (ROS) in the FH/PMS system's degradation of pyrene. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) of FH before and after the catalytic reaction, as well as active site substitution experiments and electrochemical analysis all verified that PMS adsorbed on FH could produce more abundant bonded hydroxyl groups (Fe-OH) which dominated the radical and non-radical oxidation reactions. Then, a possible pathway for pyrene degradation was presented according to gas chromatography-mass spectrometry (GC-MS). Furthermore, the FH/PMS system exhibited excellent catalytic degradation in the remediation of PAH-contaminated soil at real sites. This work provides a remarkable potential remediation technology of persistent organic pollutants (POPs) in environmental and will contribute to understanding the mechanism of Fe-based hydroxides in advanced oxidation processes. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Tang, Xuejiao AU - Tang X AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. Electronic address: tangxuejiao@nankai.edu.cn. FAU - Guo, Jiacheng AU - Guo J AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. FAU - Gao, Yue AU - Gao Y AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. FAU - Zhen, Kai AU - Zhen K AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. FAU - Sun, Hongwen AU - Sun H AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. FAU - Wang, Cuiping AU - Wang C AD - Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China. Electronic address: wangcp@nankai.edu.cn. LA - eng PT - Journal Article DEP - 20230325 PL - England TA - Chemosphere JT - Chemosphere JID - 0320657 RN - 22047-43-4 (peroxymonosulfate) RN - E1UOL152H7 (Iron) RN - 0 (Peroxides) RN - 0 (Pyrenes) SB - IM MH - *Iron/chemistry MH - Porosity MH - Spectroscopy, Fourier Transform Infrared MH - *Peroxides/chemistry MH - Pyrenes OTO - NOTNLM OT - Amorphous ferric hydroxide OT - Degradation pathway OT - PAHs OT - Peroxymonosulfate (PMS) activation OT - Radicals and non-radicals 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- 2023/03/28 06:00 MHDA- 2023/04/14 06:41 CRDT- 2023/03/27 20:26 PHST- 2023/01/13 00:00 [received] PHST- 2023/03/22 00:00 [revised] PHST- 2023/03/24 00:00 [accepted] PHST- 2023/04/14 06:41 [medline] PHST- 2023/03/28 06:00 [pubmed] PHST- 2023/03/27 20:26 [entrez] AID - S0045-6535(23)00783-X [pii] AID - 10.1016/j.chemosphere.2023.138516 [doi] PST - ppublish SO - Chemosphere. 2023 Jun;327:138516. doi: 10.1016/j.chemosphere.2023.138516. Epub 2023 Mar 25.