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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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Temperature dependence of hydroxyl radical formation in the hv/Fe3+/H2O2 and Fe3+/H2O2 systems

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dc.contributor.author Lee, Changha ko
dc.contributor.author Yoon, JY ko
dc.date.available 2014-11-03T00:33:14Z -
dc.date.created 2014-10-31 ko
dc.date.issued 2004-09 -
dc.identifier.citation CHEMOSPHERE, v.56, no.10, pp.923 - 934 ko
dc.identifier.issn 0045-6535 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/8137 -
dc.identifier.uri http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=3242709270 ko
dc.description.abstract The thermal enhancement of the formation of ·OH by the hv/Fe(III)/H2O2 system (including the Fe(III)/H 2O2 system) was quantitatively investigated with reaction temperatures ranging from 25 to 50°C. A temperature dependent kinetic model for the hv/Fe(III)/H2O2 system, incorporating 12 major reactions with no fitted rate constants or activation energies, was developed, and successfully explained the experimental measurements. Particularly, the thermal enhancement of Fe(OH)2+ photolysis which is the most significant step in the hv/Fe(III)/H2O2 system was effectively explained by two factors; (1) the variation of the Fe(OH) 2+ concentration with temperature, and (2) the temperature dependence of the quantum yield for Fe(OH)2+ photolysis (measured activation energy=11.4 kJmol-1). Although in both the hv/Fe(III)/H 2O2 and Fe(III)/H2O2 systems, elevated temperatures enhanced the formation of ·OH, the thermal enhancement was much higher in the dark Fe(III)/H2O 2 system than the hv/Fe(III)/H2O2 system. Furthermore, it was found that the relative thermal enhancement of the formation of ·OH in the presence of ·OH scavengers (tert-butyl alcohol) was magnified in the Fe(III)/H2O2 system but was not in the hv/Fe(III)/H2O2 system. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher PERGAMON-ELSEVIER SCIENCE LTD ko
dc.subject Advanced Oxidation Process ko
dc.subject Fenton and photo-Fenton reactions ko
dc.subject Hydroxyl radical ko
dc.subject Reaction temperature ko
dc.title Temperature dependence of hydroxyl radical formation in the hv/Fe3+/H2O2 and Fe3+/H2O2 systems ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-3242709270 ko
dc.identifier.wosid 000223209100006 ko
dc.type.rims ART ko
dc.description.wostc 41 *
dc.description.scopustc 51 *
dc.date.tcdate 2015-05-06 *
dc.date.scptcdate 2014-10-31 *
dc.identifier.doi 10.1016/j.chemosphere.2004.04.047 ko
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