Sequestration of arsenate from aqueous solution using 2-line ferrihydrite: equilibria, kinetics, and X-ray absorption spectroscopic analysis
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Woo Chun | - |
dc.contributor.author | Kim, Soon-Oh | - |
dc.contributor.author | Ranville, James | - |
dc.contributor.author | Yun, Seong-Taek | - |
dc.contributor.author | Choi, Sun Hee | - |
dc.date.accessioned | 2021-09-05T10:14:26Z | - |
dc.date.available | 2021-09-05T10:14:26Z | - |
dc.date.created | 2021-06-15 | - |
dc.date.issued | 2014-04 | - |
dc.identifier.issn | 1866-6280 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/98920 | - |
dc.description.abstract | Arsenic(V), as the arsenate (AsO4 (3-)) ion and its conjugate acids, has a strong affinity on Fe, Mn, and Al (oxyhydr)oxides and clay minerals. Removal of arsenate from aqueous solution by poorly crystalline ferrihydrite (hydrous ferric oxide) via a combination of macroscopic (equilibria and kinetics of sorption) and X-ray absorption spectroscopic studies was investigated. The removal of arsenate significantly decreased with increasing pH and sorption maxima of approximately 1.994 mmol/g (0.192 mol(As)/mol(Fe)) were achieved at pH 2.0. The Langmuir isotherm is most appropriate for arsenate sorption over the wide range of pH, indicating that arsenate sorption preferentially takes place at relatively homogenous and monolayer sites rather than heterogeneous and multilayer surfaces. The kinetic study demonstrated that arsenate sorption onto 2-line ferrihydrite is considerably fast, and sorption equilibrium was achieved within the reaction time of 2 h. X-ray absorption near-edge structure spectroscopy indicates no change in oxidation state of arsenate following interaction with the ferrihydrite surfaces. Extended X-ray absorption fine structure spectroscopy supports the efficient removal of arsenate by the 2-line ferrihydrite through the formation of highly stable inner-sphere surface complexes, such as bidentate binuclear corner-sharing (C-2) and bidentate mononuclear edge-sharing (E-2) complexes. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER | - |
dc.subject | SURFACE-CHEMISTRY | - |
dc.subject | ADSORPTION | - |
dc.subject | ARSENITE | - |
dc.subject | GOETHITE | - |
dc.subject | SORPTION | - |
dc.subject | EXAFS | - |
dc.subject | ARSENIC(III) | - |
dc.subject | MODEL | - |
dc.subject | MECHANISMS | - |
dc.subject | GEOMETRY | - |
dc.title | Sequestration of arsenate from aqueous solution using 2-line ferrihydrite: equilibria, kinetics, and X-ray absorption spectroscopic analysis | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yun, Seong-Taek | - |
dc.identifier.doi | 10.1007/s12665-013-2717-0 | - |
dc.identifier.scopusid | 2-s2.0-84897465106 | - |
dc.identifier.wosid | 000333475800002 | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL EARTH SCIENCES, v.71, no.8, pp.3307 - 3318 | - |
dc.relation.isPartOf | ENVIRONMENTAL EARTH SCIENCES | - |
dc.citation.title | ENVIRONMENTAL EARTH SCIENCES | - |
dc.citation.volume | 71 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 3307 | - |
dc.citation.endPage | 3318 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalResearchArea | Geology | - |
dc.relation.journalResearchArea | Water Resources | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalWebOfScienceCategory | Geosciences, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Water Resources | - |
dc.subject.keywordPlus | SURFACE-CHEMISTRY | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | ARSENITE | - |
dc.subject.keywordPlus | GOETHITE | - |
dc.subject.keywordPlus | SORPTION | - |
dc.subject.keywordPlus | EXAFS | - |
dc.subject.keywordPlus | ARSENIC(III) | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | MECHANISMS | - |
dc.subject.keywordPlus | GEOMETRY | - |
dc.subject.keywordAuthor | Arsenate | - |
dc.subject.keywordAuthor | 2-Line ferrihydrite | - |
dc.subject.keywordAuthor | Sorption equilibria | - |
dc.subject.keywordAuthor | Sorption kinetics | - |
dc.subject.keywordAuthor | X-ray absorption spectroscopy | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.