Effect of neutralizing agents on the type of As co-precipitates formed by in situ Fe oxides synthesis and its impact on the bioaccessibility of As in soil
DC Field | Value | Language |
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dc.contributor.author | Park, Jinhee | - |
dc.contributor.author | Chung, Hyeonyong | - |
dc.contributor.author | Kim, Sang Hyun | - |
dc.contributor.author | An, Jinsung | - |
dc.contributor.author | Nam, Kyoungphile | - |
dc.date.accessioned | 2023-08-16T07:41:30Z | - |
dc.date.available | 2023-08-16T07:41:30Z | - |
dc.date.issued | 2020-11 | - |
dc.identifier.issn | 0048-9697 | - |
dc.identifier.issn | 1879-1026 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/114073 | - |
dc.description.abstract | The bioaccessibility of heavy metals in soil is closely related to their potential risk. Therefore, developing techniques for reducing it needs considerable attention. In this study, we aimed to co-precipitate soil As(V) through an in situ formation of Fe oxides, thereby reducing its bioaccessibility. Soil As(V) was co-precipitated by introducing 2% Fe-nitrate (w/w) and 30% water (v/w) into soil at pH ~7. Two different neutralizing agents (NaOH and CaO) were used to induce the precipitation of Fe oxides, and their effects on the speciation of As were investigated. In all the stabilized soils, the exchangeable As fraction decreased, and the fraction of As bound to amorphous Fe oxides increased by a factor of more than 1.4. In contrast, a marked decrease in bioaccessibility of As was achieved using NaOH (40% to 7%). X-ray absorption spectroscopy analysis demonstrated that highly bioaccessible forms of calcium iron arsenate (yukonite and arseniosiderite) could be generated in CaO-stabilized soil. Our study found that neutralizing agents may play an important role in stabilizing As(V) and lowering its bioaccessibility through determining the type of formed Fe oxides in soil. © 2020 Elsevier B.V. | - |
dc.format.extent | 8 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | Elsevier BV | - |
dc.title | Effect of neutralizing agents on the type of As co-precipitates formed by in situ Fe oxides synthesis and its impact on the bioaccessibility of As in soil | - |
dc.type | Article | - |
dc.publisher.location | 네델란드 | - |
dc.identifier.doi | 10.1016/j.scitotenv.2020.140686 | - |
dc.identifier.scopusid | 2-s2.0-85087779681 | - |
dc.identifier.wosid | 000573543300008 | - |
dc.identifier.bibliographicCitation | Science of the Total Environment, v.743, pp 1 - 8 | - |
dc.citation.title | Science of the Total Environment | - |
dc.citation.volume | 743 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 8 | - |
dc.type.docType | 정기학술지(Article(Perspective Article포함)) | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | ARSENIC SPECIATION | - |
dc.subject.keywordPlus | IRON-OXIDE | - |
dc.subject.keywordPlus | CONTAMINATED SOIL | - |
dc.subject.keywordPlus | SEQUENTIAL EXTRACTION | - |
dc.subject.keywordPlus | SURFACE-CHEMISTRY | - |
dc.subject.keywordPlus | ALUM SLUDGE | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | FERRIHYDRITE | - |
dc.subject.keywordPlus | COPRECIPITATION | - |
dc.subject.keywordPlus | REMEDIATION | - |
dc.subject.keywordAuthor | Arsenic | - |
dc.subject.keywordAuthor | Co-precipitation | - |
dc.subject.keywordAuthor | Extended X-ray absorption fine structure (EXAFS) | - |
dc.subject.keywordAuthor | In situ stabilization | - |
dc.subject.keywordAuthor | Iron oxides | - |
dc.subject.keywordAuthor | Neutralizing agents | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S004896972034208X?pes=vor | - |
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