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ToolsWu, Shengyu, Wu, Zhongran, Liao, Yongkai, Reid, Brian J. and Cai, Chao (2025) Key Factors Controlling Remediation of Organic Pollutants in Synergistic Electric Field CaO2/Fe(II) Fenton-Like Systems. Environmental Science and Technology, 59 (36). pp. 19582-19592. ISSN 0013-936X
Full text not available from this repository. (Request a copy)Abstract
Fenton-like systems for pollutant remediation have attracted significant attention in recent years. However, most research has emphasized the role of oxidative species in simulated solutions, with limited consideration of practical conditions. This research investigated key factors controlling the remediation of toluene and dichloromethane in a dynamic column system under electric field conditions. The results indicated that excessive doses of remediation agents significantly reduced remediation efficiency without an electric field. Surplus CaO2 increased pH and reduced free radical production. While high Fe(II) doses accelerated CaO2 dissolution, this created flow paths that facilitated preferential pollutant transport. pH regulated Fe(II) performance, with alkaline conditions causing Fe(II) to precipitate, limiting its migration to the reactive remediation zone. Additionally, in the presence of adsorbed-phase humic acid (HA), increased pH generated dissolved-phase HA that transported pollutants away from the reactive remediation zone, further decreasing remediation efficiency. Under the electric field, the high voltage gradient enhanced pollutant degradation, reducing the need for high doses of remediation agents. However, the inhibitory effect of HA on pollutant degradation intensified as more dissolved-phase HA was produced. These findings offer new insights into the regulating mechanisms of key factors in CaO2-based Fenton-like systems in the presence and absence of an electric field.
| Item Type: | Article |
|---|---|
| Additional Information: | Publisher Copyright: © 2025 American Chemical Society |
| Uncontrolled Keywords: | calcium peroxide,column experiment,dichloromethane,electric field,humic acid,toluene,general chemistry,environmental chemistry ,/dk/atira/pure/subjectarea/asjc/1600/1600 |
| Faculty \ School: | Faculty of Science > School of Environmental Sciences |
| UEA Research Groups: | Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation Faculty of Science > Research Groups > Environmental Biology Faculty of Science > Research Groups > Geosciences |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 08 Jun 2026 15:46 |
| Last Modified: | 08 Jun 2026 15:46 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/103319 |
| DOI: | 10.1021/acs.est.5c04225 |
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