DC Field | Value | Language |
---|---|---|
dc.contributor.author | Yang, Hee-Man | ko |
dc.contributor.author | Jeon, Hyungmin | ko |
dc.contributor.author | Lee, Yeonsoo | ko |
dc.contributor.author | Choi, Minkee | ko |
dc.date.accessioned | 2022-05-30T06:00:13Z | - |
dc.date.available | 2022-05-30T06:00:13Z | - |
dc.date.created | 2022-05-30 | - |
dc.date.created | 2022-05-30 | - |
dc.date.issued | 2022-07 | - |
dc.identifier.citation | CHEMOSPHERE, v.299, pp.134309 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.uri | http://hdl.handle.net/10203/296702 | - |
dc.description.abstract | Selective removal of radioactive strontium (Sr-90) from the environment is important, and selective adsorption/ ion exchange is appropriate for removal of trace amounts of Sr-90 from large volumes of Sr-90-contaminated water. Although various inorganic ion-exchange materials, including zeolites, have been investigated intensively for removal of Sr2+ due to their excellent resistance to radiation and high ion-exchange capacity, their ion-exchange selectivity for Sr2+ is poor in the presence of competing ions such as Ca2+ and Mg2+. Here, sulfur-modified NaA zeolite (S-NaA) was prepared for low-cost, selective Sr-90 removal because the elemental sulfur encapsulated in micropores provides additional Lewis acid-base interactions with Sr2+ during the Sr2+ ion-exchange. Our ion exchange experiments revealed that S-NaA with 3 wt% sulfur (3 S-NaA) showed the highest Sr2+ selectivity among various S-NaAs containing up to 10 wt% sulfur because ion exchange involving bulky hydrated Sr2+ depends on the reduced micropore volume of S-NaA after sulfur loading. Most importantly, 3 S-NaA effectively and efficiently (> 99.4%) removed Sr-90 from groundwater containing 8.4 ppt Sr-90, demonstrating its excellent potential for practical application in the treatment of( 90)Sr-contaminated water. | - |
dc.language | English | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Sulfur-modified zeolite A as a low-cost strontium remover with improved selectivity for radioactive strontium | - |
dc.type | Article | - |
dc.identifier.wosid | 000793174000003 | - |
dc.identifier.scopusid | 2-s2.0-85126884017 | - |
dc.type.rims | ART | - |
dc.citation.volume | 299 | - |
dc.citation.beginningpage | 134309 | - |
dc.citation.publicationname | CHEMOSPHERE | - |
dc.identifier.doi | 10.1016/j.chemosphere.2022.134309 | - |
dc.contributor.localauthor | Choi, Minkee | - |
dc.contributor.nonIdAuthor | Yang, Hee-Man | - |
dc.contributor.nonIdAuthor | Jeon, Hyungmin | - |
dc.contributor.nonIdAuthor | Lee, Yeonsoo | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Sulfur-modified NaA zeolite | - |
dc.subject.keywordAuthor | Radioactive strontium | - |
dc.subject.keywordAuthor | Low-cost Sr remover | - |
dc.subject.keywordAuthor | Selective ion-exchange | - |
dc.subject.keywordPlus | ION-EXCHANGE | - |
dc.subject.keywordPlus | SODIUM NONATITANATE | - |
dc.subject.keywordPlus | NUCLEAR-WASTE | - |
dc.subject.keywordPlus | CESIUM | - |
dc.subject.keywordPlus | FRAMEWORK | - |
dc.subject.keywordPlus | KINETICS | - |
dc.subject.keywordPlus | CAPTURE | - |
dc.subject.keywordPlus | SR-90 | - |
dc.subject.keywordPlus | WATER | - |
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