PMID- 36738716 OWN - NLM STAT- MEDLINE DCOM- 20230303 LR - 20230303 IS - 1095-8630 (Electronic) IS - 0301-4797 (Linking) VI - 332 DP - 2023 Apr 15 TI - Degradation of 2,4-diclorophenol via coupling zero valent iron and hydrodynamic cavitation for sulfite activation: A turbulence modeling. PG - 117295 LID - S0301-4797(23)00083-X [pii] LID - 10.1016/j.jenvman.2023.117295 [doi] AB - The 2,4-dichlorophenol (2,4-DCP) is an important chemical precursor that can affect human endocrine system and induce pathological symptoms. This research reports the degradation of 2,4-DCP using lab-scale hydrodynamic cavitation (HC) approach, which is considered a green and effective method. To promote the degradation efficiency, the zero-valent iron (Fe(0)) as the catalyst for sulfate radical (SO(4)(*-)) generation via activation of sulfite (SO(3)(2-)) salts was simultaneously used. Degradation efficiency was favorable in acidic pH than the alkaline pH due to higher production of active radicals and was dependent on the dose of Fe(0) and SO(3)(2-). Under optimal condition, degradation efficiency by Fe(0)/HC/sulfite (96.67 +/- 2.90%) was considerably enhanced compared to HC alone (45.37 +/- 2.26%). Quenching experiments suggested that SO(4)(*-), (*)OH, (1)O(2), and O(2)(*-) radicals were involved in the degradation of 2,4-DCP by Fe(0)/HC/sulfite process, but the dominant role was related to (*)OH (70.09% contribution) and SO(4)(*-) (29.91% contribution) radicals. From the turbulence model, turbulent pressure at venturi throat decreased from -0.42 MPa to -2.02 MPa by increasing the inlet pressure from 1.0 to 4.0 bar and increase in pressure gradient has intensified bubble collapse due to higher turbulence tension. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Azizollahi, Nastaran AU - Azizollahi N AD - Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Student Research Committee, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran. FAU - Fatehizadeh, Ali AU - Fatehizadeh A AD - Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran. FAU - Pourzamani, Hamidreza AU - Pourzamani H AD - Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran. FAU - Taheri, Ensiyeh AU - Taheri E AD - Department of Environmental Health Engineering, School of Health, Isfahan University of Medical Sciences, Isfahan, Iran; Environment Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran. Electronic address: e_taheri@hlth.mui.ac.ir. FAU - Aminabhavi, Tejraj M AU - Aminabhavi TM AD - School of Advanced Sciences, KLE Technological University, Hubballi, 580031, India; Department of Chemistry, Karnatak University, Dharwad, 580 003, India; School of Engineering, University of Petroleum and Energy Studies, Dehradun, 248 007, India; Center for Energy and Environment,School of Advanced Sciences,KLE Technological University,Hubballi 580031 India. Electronic address: aminabhavit@gmail.com. LA - eng PT - Journal Article DEP - 20230202 PL - England TA - J Environ Manage JT - Journal of environmental management JID - 0401664 RN - E1UOL152H7 (Iron) RN - 0 (Water Pollutants, Chemical) RN - 0 (Sulfites) SB - IM MH - Humans MH - *Iron MH - Hydrodynamics MH - *Water Pollutants, Chemical MH - Catalysis MH - Sulfites MH - Oxidation-Reduction OTO - NOTNLM OT - 2,4-Diclorophenol OT - Advanced oxidation OT - Hydrodynamic cavitation OT - Sulfate radicals OT - Turbulence modeling OT - Zero-valent iron 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- 2023/02/05 06:00 MHDA- 2023/03/04 06:00 CRDT- 2023/02/04 18:20 PHST- 2022/11/16 00:00 [received] PHST- 2023/01/11 00:00 [revised] PHST- 2023/01/11 00:00 [accepted] PHST- 2023/02/05 06:00 [pubmed] PHST- 2023/03/04 06:00 [medline] PHST- 2023/02/04 18:20 [entrez] AID - S0301-4797(23)00083-X [pii] AID - 10.1016/j.jenvman.2023.117295 [doi] PST - ppublish SO - J Environ Manage. 2023 Apr 15;332:117295. doi: 10.1016/j.jenvman.2023.117295. Epub 2023 Feb 2.