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Tytuł:
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Enhancement of Fe-C micro-electrolysis in water by magnetic field: Mechanism, influential factors and application effectiveness.
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Autorzy:
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Zhao H; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China; State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China.
Nie T; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China.
Zhao H; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China.
Liu Y; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China.
Zhang J; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China. Electronic address: .
Ye Q; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China.
Xu H; College of Architecture & Environment, Sichuan University, Chengdu 610065, PR China.
Shu S; School of Environmental Science and Engineering, Donghua University, Shanghai 201620, PR China.
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Źródło:
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Journal of hazardous materials [J Hazard Mater] 2021 May 15; Vol. 410, pp. 124643. Date of Electronic Publication: 2020 Nov 21.
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Typ publikacji:
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Journal Article; Research Support, Non-U.S. Gov't
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Język:
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English
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Imprint Name(s):
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Original Publication: Amsterdam : Elsevier,
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Contributed Indexing:
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Keywords: Advanced oxidation processes; Applied magnetic field; Enhancement mechanism; Fe-C micro-electrolysis; Water treatment
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Entry Date(s):
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Date Created: 20201201 Date Completed: 20210528 Latest Revision: 20210528
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Update Code:
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20240105
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DOI:
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10.1016/j.jhazmat.2020.124643
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PMID:
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33257125
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Fe-C micro-electrolysis system has been widely used in filters, or as an advanced treatment process in some water treatment plants to treat various wastewater. In this study, Fe-C micro-electrolysis process was enhanced by an economical and environmentally friendly method, applied magnetic field. Batch kinetic experiments and scanning electron micrographs demonstrated a more effective micro-electrolysis and more severely corroded on the surface of Fe-C after applying a magnetic field at pH 3.0. An applied magnetic field reduced the charge-transfer resistance and increased the current density in micro-electrolysis system and Fe-C became more prone to electrochemical corrosion. Corrosion products were proved to be Fe 2+ , Fe 3 O 4 , and C-O, moreover, the formation of them were also increased in the presence of a magnetic field. Base on that, some influential factors like magnetic field flux intensity, Fe-C particle size, pH, Fe-C dosage and its reusability were investigated in this paper. Since Fe 2+ release was accelerated in micro-electrolysis system by an applied magnetic field, combination of various advanced oxidation processes were designed to explore the application effectiveness of the system. The degradation rate of target contaminant was significantly improved in the presence of a magnetic field, suggesting it could be a reliable method for wastewater treatment.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
