Designer biochar with enhanced functionality for efficient removal of radioactive cesium and strontium from water
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Palansooriya, Kumuduni Niroshika | - |
dc.contributor.author | Yoon, In-Ho | - |
dc.contributor.author | Kim, Sung-Man | - |
dc.contributor.author | Wang, Chi-Hwa | - |
dc.contributor.author | Kwon, Hyeonjin | - |
dc.contributor.author | Lee, Sang-Ho | - |
dc.contributor.author | Igalavithana, Avanthi Deshani | - |
dc.contributor.author | Mukhopadhyay, Raj | - |
dc.contributor.author | Sarkar, Binoy | - |
dc.contributor.author | Ok, Yong Sik | - |
dc.date.accessioned | 2022-11-17T14:40:44Z | - |
dc.date.available | 2022-11-17T14:40:44Z | - |
dc.date.created | 2022-11-17 | - |
dc.date.issued | 2022-11 | - |
dc.identifier.issn | 0013-9351 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/145647 | - |
dc.description.abstract | Radioactive elements released into the environment by accidental discharge constitute serious health hazards to humans and other organisms. In this study, three gasified biochars prepared from feedstock mixtures of wood, chicken manure, and food waste, and a KOH-activated biochar (40% food waste + 60% wood biochar (WFWK)) were used to remove cesium (Cs+) and strontium (Sr2+) ions from water. The physicochemical properties of the biochars before and after adsorbing Cs+ and Sr2+ were determined using X-ray diffraction (XRD), Fourier -transform infrared (FT-IR) spectroscopy, extended X-Ray absorption fine structure (EXAFS) spectroscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy-energy-dispersive X-ray spectroscopy (SEM-EDX). The WFWK exhibited the highest adsorption capacity for Cs+ (62.7 mg/g) and Sr2+ (43.0 mg/g) among the biochars tested herein. The removal of radioactive 137Cs and 90Sr exceeded 80% and 47%, respectively, in the presence of competing ions like Na+ and Ca2+. The functional groups present in biochar, including -OH, -NH2, and -COOH, facilitated the adsorption of Cs+ and Sr2+. The Cs K-edge EXAFS spectra revealed that a single coordination shell was assigned to the Cs-O bonding at 3.11 & Aring;, corresponding to an outer-sphere complex formed between Cs and the biochar. The designer biochar WFWK may be used as an effective adsorbent to treat radioactive Cs-137-and Sr-90-contaminated water generated during the operation of nuclear power plants and/or unintentional release, owing to the enrichment effect of the functional groups in biochar via alkaline activation. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.subject | ACTIVATED CARBON | - |
dc.subject | HEAVY-METALS | - |
dc.subject | ADSORPTION | - |
dc.subject | SORPTION | - |
dc.subject | GASIFICATION | - |
dc.subject | EQUILIBRIUM | - |
dc.subject | FRAMEWORK | - |
dc.subject | ATRAZINE | - |
dc.subject | BIOMASS | - |
dc.subject | SINGLE | - |
dc.title | Designer biochar with enhanced functionality for efficient removal of radioactive cesium and strontium from water | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ok, Yong Sik | - |
dc.identifier.doi | 10.1016/j.envres.2022.114072 | - |
dc.identifier.scopusid | 2-s2.0-85136287321 | - |
dc.identifier.wosid | 000861028600003 | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL RESEARCH, v.214 | - |
dc.relation.isPartOf | ENVIRONMENTAL RESEARCH | - |
dc.citation.title | ENVIRONMENTAL RESEARCH | - |
dc.citation.volume | 214 | - |
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 | Public, Environmental & Occupational Health | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.relation.journalWebOfScienceCategory | Public, Environmental & Occupational Health | - |
dc.subject.keywordPlus | ACTIVATED CARBON | - |
dc.subject.keywordPlus | HEAVY-METALS | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | SORPTION | - |
dc.subject.keywordPlus | GASIFICATION | - |
dc.subject.keywordPlus | EQUILIBRIUM | - |
dc.subject.keywordPlus | FRAMEWORK | - |
dc.subject.keywordPlus | ATRAZINE | - |
dc.subject.keywordPlus | BIOMASS | - |
dc.subject.keywordPlus | SINGLE | - |
dc.subject.keywordAuthor | Designer biochar | - |
dc.subject.keywordAuthor | Gasification | - |
dc.subject.keywordAuthor | Radioactive ions | - |
dc.subject.keywordAuthor | Radionuclides | - |
dc.subject.keywordAuthor | Nuclear waste treatment | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
145 Anam-ro, Seongbuk-gu, Seoul, 02841, Korea+82-2-3290-2963
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.