DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Yonghwan | ko |
dc.contributor.author | Kim, Yun Kon | ko |
dc.contributor.author | Kim, Jung Hwan | ko |
dc.contributor.author | Yim, Man-Sung | ko |
dc.contributor.author | Harbottle, David | ko |
dc.contributor.author | Lee, Jae Woo | ko |
dc.date.accessioned | 2018-06-16T07:36:14Z | - |
dc.date.available | 2018-06-16T07:36:14Z | - |
dc.date.created | 2018-05-01 | - |
dc.date.created | 2018-05-01 | - |
dc.date.created | 2018-05-01 | - |
dc.date.created | 2018-05-01 | - |
dc.date.created | 2018-05-01 | - |
dc.date.issued | 2018-08 | - |
dc.identifier.citation | Applied Surface Science, v.450, pp.404 - 412 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | http://hdl.handle.net/10203/242517 | - |
dc.description.abstract | Solid-state NaOH treatment of montmorillonite clay was used to enhance the removal of Cs+ and Sr2+. Through this facile and low-cost modification, montmorillonite with a large BET surface area (117.1 m(2) g(-1)) and many surface functional groups (SiAOANa), demonstrated enhanced sorption kinetics (89% removal for 40 mg L-1 Cs+ and 23 mg L-1 Sr2+ in 1 h) with a sorption capacity of 290.7 mg g(-1) for Cs+ and 184.8 mg g(-1) for Sr2+, greatly exceeding the low sorption capacity (137.0 mg g(-1) for Cs+ and 15.6 mg g(-1) for Sr2+) of pristine montmorillonite. SEM-EDS and XPS analyses revealed that Cs+ and Sr2+ were ion-exchanged with Na+ on the surface functional groups formed following NaOH treatment. The performance of NaOH-treated montmorillonite was stable following gamma-ray irradiation (at 6 Gy h(-1) for 30 min) and across a broad range of pHs (3 to 11), exhibiting a high distribution coefficient (Kd) of 1.5 x 10(3) mL g(-1) for Cs+ (1.58 mg L-1) and 3.7 x 10(3) mL g(-1) for Sr2+ (1.64 mg L-1) under groundwater conditions where various cations including Na+, K+, and Ca2+ (V/m = 1 L/g) were present. The proposed method demonstrated great improvement of the sorption capacity of an abundant and inexpensive montmorillonite. (C) 2018 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Synthesis of Functionalized Porous Montmorillonite via Solid-State NaOH Treatment for Efficient Removal of Cesium and Strontium Ions | - |
dc.type | Article | - |
dc.identifier.wosid | 000433199000047 | - |
dc.identifier.scopusid | 2-s2.0-85046402172 | - |
dc.type.rims | ART | - |
dc.citation.volume | 450 | - |
dc.citation.beginningpage | 404 | - |
dc.citation.endingpage | 412 | - |
dc.citation.publicationname | Applied Surface Science | - |
dc.identifier.doi | 10.1016/j.apsusc.2018.04.181 | - |
dc.contributor.localauthor | Yim, Man-Sung | - |
dc.contributor.localauthor | Lee, Jae Woo | - |
dc.contributor.nonIdAuthor | Harbottle, David | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Montmorillonite | - |
dc.subject.keywordAuthor | Alkaline treatment | - |
dc.subject.keywordAuthor | Cesium | - |
dc.subject.keywordAuthor | Strontium | - |
dc.subject.keywordAuthor | Sorption | - |
dc.subject.keywordPlus | POTASSIUM COPPER HEXACYANOFERRATE | - |
dc.subject.keywordPlus | AQUEOUS-SOLUTION | - |
dc.subject.keywordPlus | ADSORPTION CAPACITY | - |
dc.subject.keywordPlus | SELECTIVE REMOVAL | - |
dc.subject.keywordPlus | CS+ REMOVAL | - |
dc.subject.keywordPlus | NANOCOMPOSITES | - |
dc.subject.keywordPlus | ZEOLITES | - |
dc.subject.keywordPlus | HYDROGEL | - |
dc.subject.keywordPlus | EXCHANGE | - |
dc.subject.keywordPlus | CARBON | - |
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