Hydrophobic sulfur core–shell layered metallic iron for nitrate reduction with nearly 100% dinitrogen selectivity: Mechanism and field studies
DC Field | Value | Language |
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dc.contributor.author | Choong, Choe Earn | - |
dc.contributor.author | Yoon, So Yeon | - |
dc.contributor.author | Wong, Kien Tiek | - |
dc.contributor.author | Kim, Minhee | - |
dc.contributor.author | Lee, Gooyong | - |
dc.contributor.author | Kim, Sang-Hyoun | - |
dc.contributor.author | Jeon, Byong Hun | - |
dc.contributor.author | Choi, Jaeyoung | - |
dc.contributor.author | Yoon, Yeomin | - |
dc.contributor.author | Choi, Eun Ha | - |
dc.contributor.author | Jang, Min | - |
dc.date.accessioned | 2022-12-20T04:53:23Z | - |
dc.date.available | 2022-12-20T04:53:23Z | - |
dc.date.created | 2022-12-07 | - |
dc.date.issued | 2023-02 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/172734 | - |
dc.description.abstract | We prepared hydrophobic sulfur (S) core–shell-layered nano-zero-valent iron (Fe) (S-nZVI) via a post-sulfidation method with varying Fe/S mass ratios for NO3− reduction. Notably, S0.125ZVI (Fe/S = 0.125) showed good N[sbnd]O cleavage properties owing to its high electron (e−) transfer efficiency and low surface passivation. As a result, the S0.125ZVI exhibited higher selectivity of NO3− reduction toward N2 than sole nZVI in synthetic and actual NO3− groundwater in batch experiments. Density functional theory (DFT) calculations showed that H2 evolution over S-nZVI was suppressed by the S atom in the hollow site of the Fe(1 1 0) surface, resulting in nearly 100 % denitrification selectivity. Quenching tests revealed that e− transfer through the S atom toward the surface bounded by NOx species is the dominant denitrification mechanism of S-nZVI. Up-flow column tests using actual groundwater were conducted for 127 d, and S0.125ZVI demonstrated a removal capacity of up to 1907 mg-N/g NO3−. Field experiments using S0.125ZVI for NO3−-contaminated groundwater remediation were conducted over four months, confirming that S-nZVI may be an alternative to nZVI for in situ groundwater remediation. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Hydrophobic sulfur core–shell layered metallic iron for nitrate reduction with nearly 100% dinitrogen selectivity: Mechanism and field studies | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Jeon, Byong Hun | - |
dc.identifier.doi | 10.1016/j.cej.2022.140083 | - |
dc.identifier.scopusid | 2-s2.0-85141530135 | - |
dc.identifier.wosid | 000990152600001 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.454, pp.1 - 11 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 454 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 11 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | ZERO-VALENT IRON | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | NANO | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | PARTICLES | - |
dc.subject.keywordPlus | NZVI | - |
dc.subject.keywordPlus | PH | - |
dc.subject.keywordAuthor | Zero-valent iron | - |
dc.subject.keywordAuthor | Sulfur | - |
dc.subject.keywordAuthor | Nitrate reduction | - |
dc.subject.keywordAuthor | Field test | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S1385894722055632?via%3Dihub | - |
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