Zeolite-supported nanoscale zero-valent iron for immobilization of cadmium, lead, and arsenic in farmland soils: Encapsulation mechanisms and indigenous microbial responses
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Li, Zhangtao | - |
dc.contributor.author | Wang, Lu | - |
dc.contributor.author | Wu, Jizi | - |
dc.contributor.author | Xu, Yan | - |
dc.contributor.author | Wang, Fan | - |
dc.contributor.author | Tang, Xianjin | - |
dc.contributor.author | Xu, Jianming | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.contributor.author | Meng, Jun | - |
dc.contributor.author | Liu, Xingmei | - |
dc.date.accessioned | 2021-08-31T01:03:55Z | - |
dc.date.available | 2021-08-31T01:03:55Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2020-05 | - |
dc.identifier.issn | 0269-7491 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/56067 | - |
dc.description.abstract | Zeolite-supported nanoscale zero-valent iron (Z-NZVI) has great potential for metal(loid) removal, but its encapsulation mechanisms and ecological risks in real soil systems are not completely clear. We conducted long-term incubation experiments to gain new insights into the interactions between metal(loid) s (Cd, Pb, As) and Z-NZVI in naturally contaminated farmland soils, as well as the alteration of indigenous bacterial communities during soil remediation. With the pH-adjusting and adsorption capacities, 30 g kg(-1) Z-NZVI amendment significantly decreased the available metal(loid) concentrations by 10.2-96.8% and transformed them into strongly-bound fractions in acidic and alkaline soils after 180 d. An innovative magnetic separation of Z-NZVI from soils followed by XRD and XPS characterizations revealed that B-type ternary complexation, heterogeneous coprecipitation, and/or concurrent redox reactions of metal(loid)s, especially the formation of Cd-3(AsO4)(2), PbFe2(AsO4)2(OH)(2), and As-0, occurred only under specific soil conditions. Sequencing of 16S rDNA using Illumina MiSeq platform indicated that temporary shifts in iron-resistant/sensitive, pH-sensitive, denitrifying, and metal-resistant bacteria after Z-NZVI addition were ultimately eliminated because soil characteristics drove the re-establishment of indigenous bacterial community. Meanwhile, Z-NZVI recovered the basic activities of bacterial DNA replication and denitrification functions in soils. These results confirm that Z-NZVI is promising for the long-term remediation of metal(loid)s contaminated farmland soil without significant ecotoxicity. (C) 2020 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCI LTD | - |
dc.subject | HEAVY-METAL CONTAMINATION | - |
dc.subject | AQUEOUS-SOLUTION | - |
dc.subject | RIVER SEDIMENTS | - |
dc.subject | REMOVAL | - |
dc.subject | CD | - |
dc.subject | PB | - |
dc.subject | BIOCHAR | - |
dc.subject | PB(II) | - |
dc.subject | COMMUNITY | - |
dc.subject | AS(III) | - |
dc.title | Zeolite-supported nanoscale zero-valent iron for immobilization of cadmium, lead, and arsenic in farmland soils: Encapsulation mechanisms and indigenous microbial responses | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ok, Yong Sik | - |
dc.identifier.doi | 10.1016/j.envpol.2020.114098 | - |
dc.identifier.scopusid | 2-s2.0-85078928913 | - |
dc.identifier.wosid | 000528537600027 | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL POLLUTION, v.260 | - |
dc.relation.isPartOf | ENVIRONMENTAL POLLUTION | - |
dc.citation.title | ENVIRONMENTAL POLLUTION | - |
dc.citation.volume | 260 | - |
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.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | HEAVY-METAL CONTAMINATION | - |
dc.subject.keywordPlus | AQUEOUS-SOLUTION | - |
dc.subject.keywordPlus | RIVER SEDIMENTS | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | CD | - |
dc.subject.keywordPlus | PB | - |
dc.subject.keywordPlus | BIOCHAR | - |
dc.subject.keywordPlus | PB(II) | - |
dc.subject.keywordPlus | COMMUNITY | - |
dc.subject.keywordPlus | AS(III) | - |
dc.subject.keywordAuthor | Nanoscale zero-valent iron | - |
dc.subject.keywordAuthor | Metal(loid)s | - |
dc.subject.keywordAuthor | Soil remediation | - |
dc.subject.keywordAuthor | Encapsulation mechanism | - |
dc.subject.keywordAuthor | Bacterial community | - |
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.