DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Youna | ko |
dc.contributor.author | Choi, MinKee | ko |
dc.date.accessioned | 2014-09-02T02:35:30Z | - |
dc.date.available | 2014-09-02T02:35:30Z | - |
dc.date.created | 2014-07-08 | - |
dc.date.created | 2014-07-08 | - |
dc.date.issued | 2014-07 | - |
dc.identifier.citation | ENVIRONMENTAL SCIENCE TECHNOLOGY, v.48, no.13, pp.7503 - 7510 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | http://hdl.handle.net/10203/189862 | - |
dc.description.abstract | Ion-exchange has been frequently used for the treatment of perchlorate (ClO4-), but disposal or regeneration of the spent resins has been the major hurdle for field application. Here we demonstrate a synergistic integration of ion-exchange and catalytic decomposition by using Pd-supported ion-exchange resin as an adsorption/catalysis bifunctional material. The ion-exchange capability of the resin did not change after generation of the Pd clusters via mild ethanol reduction, and thus showed very high ion-exchange selectivity and capacity toward ClO4-. After the resin was saturated with ClO4- in an adsorption mode, it was possible to fully decompose the adsorbed ClO4- into nontoxic Cl- by the catalytic function of the Pd catalysts under H-2 atmosphere. It was demonstrated that prewetting the ion-exchange resin with ethanol significantly accelerate the decomposition of ClO4- due to the weaker association of ClO4- with the ion-exchange sites of the resin, which allows more facile access of ClO4- to the catalytically active Pd-resin interface. In the presence of ethanol, >90% of the adsorbed ClO4- could be decomposed within 24 h at 10 bar H-2 and 373 K. The ClO4- adsorption-catalytic decomposition cycle could be repeated up to five times without loss of ClO4- adsorption capacity and selectivity. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | CONTAMINATED GROUNDWATER | - |
dc.subject | ACTIVATED CARBON | - |
dc.subject | DRINKING-WATER | - |
dc.subject | ATOM-TRANSFER | - |
dc.subject | OXYGEN | - |
dc.subject | TECHNOLOGIES | - |
dc.subject | DEGRADATION | - |
dc.subject | MECHANISMS | - |
dc.subject | OXAZOLINE | - |
dc.subject | PLATINUM | - |
dc.title | Synergistic Integration of Ion-Exchange and Catalytic Reduction for Complete Decomposition of Perchlorate in Waste Water | - |
dc.type | Article | - |
dc.identifier.wosid | 000338488700039 | - |
dc.identifier.scopusid | 2-s2.0-84903708707 | - |
dc.type.rims | ART | - |
dc.citation.volume | 48 | - |
dc.citation.issue | 13 | - |
dc.citation.beginningpage | 7503 | - |
dc.citation.endingpage | 7510 | - |
dc.citation.publicationname | ENVIRONMENTAL SCIENCE TECHNOLOGY | - |
dc.identifier.doi | 10.1021/es501003m | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Choi, MinKee | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | CONTAMINATED GROUNDWATER | - |
dc.subject.keywordPlus | ACTIVATED CARBON | - |
dc.subject.keywordPlus | DRINKING-WATER | - |
dc.subject.keywordPlus | ATOM-TRANSFER | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | TECHNOLOGIES | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | MECHANISMS | - |
dc.subject.keywordPlus | OXAZOLINE | - |
dc.subject.keywordPlus | PLATINUM | - |
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