DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kyung, Daeseung | ko |
dc.contributor.author | Amir, Amnorzahira | ko |
dc.contributor.author | Choi, Kyunghoon | ko |
dc.contributor.author | Lee, Woo-Jin | ko |
dc.date.accessioned | 2015-04-08T06:41:19Z | - |
dc.date.available | 2015-04-08T06:41:19Z | - |
dc.date.created | 2015-03-23 | - |
dc.date.created | 2015-03-23 | - |
dc.date.created | 2015-03-23 | - |
dc.date.issued | 2015-02 | - |
dc.identifier.citation | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, v.54, no.5, pp.1439 - 1446 | - |
dc.identifier.issn | 0888-5885 | - |
dc.identifier.uri | http://hdl.handle.net/10203/195826 | - |
dc.description.abstract | In this study, we demonstrated the reductive substitution of aquo-cobalamin(III) (Cbl(III)-H2O) by sulfide-cobalamin(III) (Cbl(III)-S2-) in the presence of S2-. Cbl(III)-H2O was transformed to Cbl(III)-S2- via ligand substitution of H2O by S2- at its axial position, due to the weakness of the bond strength of cobalt with H2O. Cbl(III)-S2- was reduced to sulfide-cobalamin(II) and partially further to sulfide-cobalamin(I) as the concentration of S2- increased from 0.1 to 5.0 mM. In the presence of nanomackinawite (nFeS), Cbl(III)-S2- species were fully adsorbed onto the nFeS surface, and its reactivity was enhanced by the reactive surface chemical species. The dechlorination kinetic rate constant of tetrachloroethene by Cbl(III)-S2- in nFeS suspension (k(nFeS-Cbl(III)-S)(2-) = 0.008 +/- 0.001 h(-1)) was 4 times greater than that by Cbl(III)-H2O, showing a potential role for S2--Cbl(II) as a more effective electron transfer mediator than S-n(2-)-Cbl(II) and OH-Cbl(II). The experimental results provide fundamental knowledge on potential biogeochemical reactions relevant to interactions between S2- and bacterial coenzyme in nFeS suspension, which can significantly enhance reductive dechlorination of chlorinated compounds in contaminated sites. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | COENZYME B-12 | - |
dc.subject | CARBON-TETRACHLORIDE | - |
dc.subject | RESONANCE RAMAN | - |
dc.subject | IRON SULFIDE | - |
dc.subject | DECHLORINATION | - |
dc.subject | TRICHLOROETHYLENE | - |
dc.subject | KINETICS | - |
dc.subject | DEHALOGENATION | - |
dc.subject | VITAMIN-B-12 | - |
dc.subject | CONTAMINANTS | - |
dc.title | Reductive Transformation of Tetrachloroethene Catalyzed by Sulfide-Cobalamin in Nano-Mackinawite Suspension | - |
dc.type | Article | - |
dc.identifier.wosid | 000349580300005 | - |
dc.identifier.scopusid | 2-s2.0-84949132102 | - |
dc.type.rims | ART | - |
dc.citation.volume | 54 | - |
dc.citation.issue | 5 | - |
dc.citation.beginningpage | 1439 | - |
dc.citation.endingpage | 1446 | - |
dc.citation.publicationname | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | - |
dc.identifier.doi | 10.1021/ie503605n | - |
dc.contributor.localauthor | Lee, Woo-Jin | - |
dc.contributor.nonIdAuthor | Amir, Amnorzahira | - |
dc.contributor.nonIdAuthor | Choi, Kyunghoon | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | COENZYME B-12 | - |
dc.subject.keywordPlus | CARBON-TETRACHLORIDE | - |
dc.subject.keywordPlus | RESONANCE RAMAN | - |
dc.subject.keywordPlus | IRON SULFIDE | - |
dc.subject.keywordPlus | DECHLORINATION | - |
dc.subject.keywordPlus | TRICHLOROETHYLENE | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordPlus | DEHALOGENATION | - |
dc.subject.keywordPlus | VITAMIN-B-12 | - |
dc.subject.keywordPlus | CONTAMINANTS | - |
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