Cesium and Strontium Retentions Governed by Aluminosilicate Gel in Alkali-Activated Cements

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dc.contributor.authorJang, Jeong Gookko
dc.contributor.authorPark, Sol Moiko
dc.contributor.authorLee, Haeng Kiko
dc.date.accessioned2017-07-04T02:48:21Z-
dc.date.available2017-07-04T02:48:21Z-
dc.date.created2017-06-26-
dc.date.created2017-06-26-
dc.date.created2017-06-26-
dc.date.issued2017-04-
dc.identifier.citationMATERIALS, v.10, no.4-
dc.identifier.issn1996-1944-
dc.identifier.urihttp://hdl.handle.net/10203/224747-
dc.description.abstractThe present study investigates the retention mechanisms of cesium and strontium for alkali-activated cements. Retention mechanisms such as adsorption and precipitation were examined in light of chemical interactions. Batch adsorption experiments and multi-technical characterizations by using X-ray diffraction, zeta potential measurements, and the N-2 gas adsorption/ desorption methods were conducted for this purpose. Strontium was found to crystalize in alkali-activated cements, while no cesium-bearing crystalline phases were detected. The adsorption kinetics of alkali-activated cements having relatively high adsorption capacities were compatible with pseudo-second-order kinetic model, thereby suggesting that it is governed by complex multistep adsorption. The results provide new insight, demonstrating that characteristics of aluminosilicate gel with a highly negatively charged surface and high micropore surface area facilitated more effective immobilization of cesium and strontium in comparison with calcium silicate hydrates.-
dc.languageEnglish-
dc.publisherMDPI AG-
dc.titleCesium and Strontium Retentions Governed by Aluminosilicate Gel in Alkali-Activated Cements-
dc.typeArticle-
dc.identifier.wosid000402843800122-
dc.identifier.scopusid2-s2.0-85018460534-
dc.type.rimsART-
dc.citation.volume10-
dc.citation.issue4-
dc.citation.publicationnameMATERIALS-
dc.identifier.doi10.3390/ma10040447-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorLee, Haeng Ki-
dc.contributor.nonIdAuthorJang, Jeong Gook-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordAuthoralkali-activated cements-
dc.subject.keywordAuthorgel-
dc.subject.keywordAuthorcesium-
dc.subject.keywordAuthorstrontium-
dc.subject.keywordAuthoradsorption kinetics-
dc.subject.keywordAuthorimmobilization-
dc.subject.keywordPlusFLY ASH/SLAG PASTE-
dc.subject.keywordPlusZEOLITE-A-
dc.subject.keywordPlusMODIFIED MONTMORILLONITE-
dc.subject.keywordPlusSTRENGTH DEVELOPMENT-
dc.subject.keywordPlusSORPTION-
dc.subject.keywordPlusASH-
dc.subject.keywordPlusGEOPOLYMERS-
dc.subject.keywordPlusADSORPTION-
dc.subject.keywordPlusBEHAVIOR-
dc.subject.keywordPlusREMOVAL-
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CE-Journal Papers(저널논문)
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