DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Jeongyun | ko |
dc.contributor.author | Choi, Kyunghoon | ko |
dc.contributor.author | Lee, Woojin | ko |
dc.date.accessioned | 2009-02-12T01:16:03Z | - |
dc.date.available | 2009-02-12T01:16:03Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2009-03 | - |
dc.identifier.citation | JOURNAL OF HAZARDOUS MATERIALS, v.162, no.2-3, pp.1151 - 1158 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | http://hdl.handle.net/10203/8479 | - |
dc.description.abstract | Reductive dechlorination of carbon tetrachloride (CT) and 1,1,1-trichloroethane (1,1,1-TCA) by FeS with transition metals (Cu(II), Co(II), and Ni(II)) and hydrosulfide was characterized in this study. The batch kinetic experiments were conducted by spiking each stock solution of CT and 1,1,1-TCA into 33 g/L of FeS suspensions with and without transition metals at pH 7.5. No significant enhancement was observed in the reductive dechlorination of target compounds by FeS with 1 mM transition metals. However, except the addition of Cu(II), the reduction rate of 1,1,1-TCA increased with increasing the concentration of transition metals. The rate constants with 10 mM Co(II) and Ni(II) were 0.06 and 0.11 h(-1), approximately 1.3 and 3.0 times greater than those by FeS alone. The addition of 20 mM HS(-) also increased the rate constants of 1,1,1-TCA by FeS by one order of magnitude. SEM analysis showed that the addition of transition metal (Ni(II)) and HS(-) caused a noticeable morphologic change of FeS surface. The transition metal added was substituted by the structural iron resulting in the decrease of iron content of FeS (52.6-46.9%). One third of the transition metal in FeS suspension existed as zero-valent form playing a catalyst role to accelerate the reaction kinetics. (C) 2008 Elsevier B.V. All rights reserved. | - |
dc.description.sponsorship | Korean Ministry of Land, Transport and MaritimeAffairs (06-CC-A01: Hightech Urban Development Program) and Korea Research Foundation (KRF-2007-313-D00439) | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | ZERO-VALENT METALS | - |
dc.subject | IRON SULFIDE | - |
dc.subject | SURFACE-CHEMISTRY | - |
dc.subject | TRANSFORMATION | - |
dc.subject | TRICHLOROETHYLENE | - |
dc.subject | DEGRADATION | - |
dc.subject | REDUCTANTS | - |
dc.subject | KINETICS | - |
dc.subject | TETRACHLOROETHYLENE | - |
dc.subject | HEXACHLOROETHANE | - |
dc.title | Effects of transition metal and sulfide on the reductive dechlorination of carbon tetrachloride and 1,1,1-trichloroethane by FeS | - |
dc.type | Article | - |
dc.identifier.wosid | 000263370200077 | - |
dc.identifier.scopusid | 2-s2.0-57649158179 | - |
dc.type.rims | ART | - |
dc.citation.volume | 162 | - |
dc.citation.issue | 2-3 | - |
dc.citation.beginningpage | 1151 | - |
dc.citation.endingpage | 1158 | - |
dc.citation.publicationname | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.identifier.doi | 10.1016/j.jhazmat.2008.06.007 | - |
dc.contributor.localauthor | Lee, Woojin | - |
dc.contributor.nonIdAuthor | Choi, Jeongyun | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Fes | - |
dc.subject.keywordAuthor | Sulfide | - |
dc.subject.keywordAuthor | Transition metal | - |
dc.subject.keywordAuthor | Reductive dechlorination | - |
dc.subject.keywordAuthor | Chlorinated aliphatic compound | - |
dc.subject.keywordPlus | ZERO-VALENT METALS | - |
dc.subject.keywordPlus | IRON SULFIDE | - |
dc.subject.keywordPlus | SURFACE-CHEMISTRY | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordPlus | TRICHLOROETHYLENE | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | REDUCTANTS | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordPlus | TETRACHLOROETHYLENE | - |
dc.subject.keywordPlus | HEXACHLOROETHANE | - |
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