Elucidating the redox-driven dynamic interactions between arsenic and iron-impregnated biochar in a paddy soil using geochemical and spectroscopic techniques
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, Xing | - |
dc.contributor.author | Shaheen, Sabry M. | - |
dc.contributor.author | Wang, Jianxu | - |
dc.contributor.author | Hou, Deyi | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.contributor.author | Wang, Shan-Li | - |
dc.contributor.author | Wang, Hailong | - |
dc.contributor.author | Rinklebe, Joerg | - |
dc.date.accessioned | 2022-03-02T17:42:15Z | - |
dc.date.available | 2022-03-02T17:42:15Z | - |
dc.date.created | 2022-03-02 | - |
dc.date.issued | 2022-01-15 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/137527 | - |
dc.description.abstract | Iron (Fe)-modified biochar, a renewable amendment that synthetizes the functions of biochar and Fe materials, demonstrates a potential to remediate arsenic (As)-contaminated soils. However, the effectiveness of Fe-based biochar to immobilize As in paddy soils under varying redox conditions (Eh) has not been quantified. We tested the capability of the raw (RBC) and Fe-impregnated (FeBC) biochars to immobilize As in a paddy soil under various Eh conditions (from -400 to +300 mV) using a biogeochemical microcosm system. In the control, As was mobilized (686.2-1535.8 mu g L-1) under reducing conditions and immobilized (61.6-71.1 mu g L-1) under oxidizing conditions. Application of FeBC immobilized As at Eh < 0 mV by 32.6%-81.1%, compared to the control, because of the transformation of As-bound Fe (hydro)oxides (e.g., ferrihydrite) and the formation of complexes (e.g., ternary As-Fe-DOC). Application of RBC immobilized As at Eh -100 mV by 16.0%-41.3%, compared to the control, due to its porous structure and oxygen-containing functional groups. Mobilized As at Eh +200 mV was caused by the increase of pH after RBC application. Amendment of the Fe-modified biochar can be a suitable approach for alleviating the environmental risk of As under reducing conditions in paddy soils. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | DISSOLVED ORGANIC-MATTER | - |
dc.subject | ZERO-VALENT IRON | - |
dc.subject | FE(II)-CATALYZED TRANSFORMATION | - |
dc.subject | FERRIHYDRITE | - |
dc.subject | MOBILITY | - |
dc.subject | REDUCTION | - |
dc.subject | KINETICS | - |
dc.subject | ADSORPTION | - |
dc.subject | SPECIATION | - |
dc.subject | COMPLEXES | - |
dc.title | Elucidating the redox-driven dynamic interactions between arsenic and iron-impregnated biochar in a paddy soil using geochemical and spectroscopic techniques | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ok, Yong Sik | - |
dc.identifier.doi | 10.1016/j.jhazmat.2021.126808 | - |
dc.identifier.scopusid | 2-s2.0-85112268028 | - |
dc.identifier.wosid | 000696615800004 | - |
dc.identifier.bibliographicCitation | JOURNAL OF HAZARDOUS MATERIALS, v.422 | - |
dc.relation.isPartOf | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.citation.title | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.citation.volume | 422 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | DISSOLVED ORGANIC-MATTER | - |
dc.subject.keywordPlus | ZERO-VALENT IRON | - |
dc.subject.keywordPlus | FE(II)-CATALYZED TRANSFORMATION | - |
dc.subject.keywordPlus | FERRIHYDRITE | - |
dc.subject.keywordPlus | MOBILITY | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | SPECIATION | - |
dc.subject.keywordPlus | COMPLEXES | - |
dc.subject.keywordAuthor | Toxic metal(loid)s | - |
dc.subject.keywordAuthor | Fe-based biochar | - |
dc.subject.keywordAuthor | Redox conditions | - |
dc.subject.keywordAuthor | Soil remediation | - |
dc.subject.keywordAuthor | Immobilization mechanisms | - |
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.