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Lee, Changha
Advanced Redox Technology (ART) Lab
Research Interests
  • Water Treatment, Advanced Oxidation/Reduction, Water Chemistry, Environmental Catalyst

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Oxidation of organic contaminants in water by iron-induced oxygen activation: A short review

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Title
Oxidation of organic contaminants in water by iron-induced oxygen activation: A short review
Author
Lee, Changha
Issue Date
2015-09
Publisher
Korean Society of Environmental Engineers
Citation
ENVIRONMENTAL ENGINEERING RESEARCH, v.20, no.3, pp.205 - 211
Abstract
Reduced forms of iron, such as zero-valent ion (ZVI) and ferrous ion (Fe[II]), can activate dissolved oxygen in water into reactive oxidants capable of oxidative water treatment. The corrosion of ZVI (or the oxidation of (Fe[II]) forms a hydrogen peroxide (H2O2) intermediate and the subsequent Fenton reaction generates reactive oxidants such as hydroxyl radical (•OH) and ferryl ion (Fe[IV]). However, the production of reactive oxidants is limited by multiple factors that restrict the electron transfer from iron to oxygen or that lead the reaction of H2O2 to undesired pathways. Several efforts have been made to enhance the production of reactive oxidants by iron-induced oxygen activation, such as the use of iron-chelating agents, electron-shuttles, and surface modification on ZVI. This article reviews the chemistry of oxygen activation by ZVI and Fe(II) and its application in oxidative degradation of organic contaminants. Also discussed are the issues which require further investigation to better understand the chemistry and develop practical environmental technologies. © 2015 Korean Society of Environmental Engineers.
URI
https://scholarworks.unist.ac.kr/handle/201301/18037
URL
http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=E1HGBK_2015_v20n3_205
DOI
10.4491/eer.2015.051
ISSN
1226-1025
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