DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bokare, AD | - |
dc.contributor.author | Choi, WY | - |
dc.date.accessioned | 2016-04-01T02:33:16Z | - |
dc.date.available | 2016-04-01T02:33:16Z | - |
dc.date.created | 2010-12-06 | - |
dc.date.issued | 2010-10-01 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.other | 2010-OAK-0000022348 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/25344 | - |
dc.description.abstract | The oxidation of organic compounds in water was investigated with using chromate as an activator of H2O2. 4-chlorophenol (4-CP) was used as a main model substrate, and its degradation was successfully achieved at circumneutral pH. Unlike the traditional Fenton-based activation of H2O2 that is mainly limited to acidic condition, the oxidative capacity of the proposed Cr(VI)/ H2O2 system is active over a wide range of pH 3-11. H2O2 substitutes the oxo ligands of chromate by the peroxo ligands and, subsequently, converts chromate(VI) into a tetraperoxochromate(V) complex. The instantaneous disproportionation between chromium-coordinated peroxo ligands initiates the generation of HO center dot that are responsible for the degradation of organic compounds in the Cr(VI)/H2O2 system. The oxidation rate of 4-CP and the in situ generated concentration of peroxochromate(V) decreased with increasing pH. The generation of HO center dot in the Cr(VI)/H2O2 solution was confirmed by monitoring the production of p-hydroxybenzoic acid from the oxidation of benzoic acid as a probe reaction and by quenching the degradation of 4-CP in the presence of methanol as a radical scavenger. The oxidation of 4-CP investigated at different H2O2 concentrations and pH indicated the pH-dependent competition between peroxo ligand exchange and dissociation reactions. The proposed Cr(VI)/H2O2 process can be ideally suited for the treatment of chromate-contaminated wastewaters with recalcitrant organic compounds. The degradation of 4-CP in actual COO-contaminated wastewater was successfully demonstrated in the presence of added H2O2. The Cr(VI)/H2O2 system is proposed as a viable advanced oxidation process.Cr(VI)/H2O2 system is proposed as a viable advanced oxidation process. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.subject | IMPERATIVE TECHNOLOGIES | - |
dc.subject | FENTON DEGRADATION | - |
dc.subject | PH VALUES | - |
dc.subject | ORANGE II | - |
dc.subject | CHROMIUM | - |
dc.subject | REDUCTION | - |
dc.subject | CATALYSTS | - |
dc.subject | IRON | - |
dc.subject | DESTRUCTION | - |
dc.subject | COMPLEXES | - |
dc.title | Chromate-Induced Activation of Hydrogen Peroxide for Oxidative Degradation of Aqueous Organic Pollutants | - |
dc.type | Article | - |
dc.contributor.college | 환경공학부 | - |
dc.identifier.doi | 10.1021/ES903930H | - |
dc.author.google | Bokare, AD | - |
dc.author.google | Choi, WY | - |
dc.relation.volume | 44 | - |
dc.relation.issue | 19 | - |
dc.relation.startpage | 7232 | - |
dc.relation.lastpage | 7237 | - |
dc.contributor.id | 10105056 | - |
dc.relation.journal | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.44, no.19, pp.7232 - 7237 | - |
dc.identifier.wosid | 000282209700013 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 7237 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 7232 | - |
dc.citation.title | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 44 | - |
dc.contributor.affiliatedAuthor | Choi, WY | - |
dc.identifier.scopusid | 2-s2.0-77957349175 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 45 | - |
dc.description.scptc | 43 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | IMPERATIVE TECHNOLOGIES | - |
dc.subject.keywordPlus | FENTON DEGRADATION | - |
dc.subject.keywordPlus | PH VALUES | - |
dc.subject.keywordPlus | ORANGE II | - |
dc.subject.keywordPlus | CHROMIUM | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | IRON | - |
dc.subject.keywordPlus | DESTRUCTION | - |
dc.subject.keywordPlus | COMPLEXES | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
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