Caesium incorporation and retention in illite interlayers.
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| Title: | Caesium incorporation and retention in illite interlayers. |
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| Authors: | Fuller, Adam J.1, Shaw, Samuel2, Ward, Michael B.3, Haigh, Sarah J.4,5, Mosselmans, J. Frederick W.6, Peacock, Caroline L.1, Stackhouse, Stephen1, Dent, Andrew J.6, Trivedi, Divyesh7, Burke, Ian T.1 i.t.burke@leeds.ac.uk |
| Source: | Applied Clay Science. May2015, Vol. 108, p128-134. 7p. |
| Subjects: | Cesium, Illite, Sorption, Clay minerals, Transmission electron microscopy, Radioactive substances |
| Abstract: | Radioactive caesium (chiefly 137 Cs) is a major environmental pollutant. The mobility of Cs in temperate soils is primarily controlled by sorption onto clay minerals, particularly the frayed edges of illite interlayers. This paper investigates the adsorption of Cs to illite at the molecular scale, over both the short and long term. Transmission electron microscopy (TEM) images showed that after initial absorption into the frayed edges, Cs migrated into the illite interlayer becoming incorporated within the mineral structure. Caesium initially exchanged with hydrated Ca at the frayed edges, causing them to collapse. This process was irreversible as Cs held in the collapsed interlayers was not exchangeable with Ca. Over the long term Cs did not remain at the edge of the illite crystals, but diffused into the interlayers by exchange with K. Results from extended X-ray absorption fine structure spectroscopy (EXAFS) and density functional theory modelling confirmed that Cs was incorporated into the illite interlayer and revealed its bonding environment. [ABSTRACT FROM AUTHOR] |
| Copyright of Applied Clay Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 101917816 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Caesium incorporation and retention in illite interlayers. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Fuller%2C+Adam+J%2E%22">Fuller, Adam J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Shaw%2C+Samuel%22">Shaw, Samuel</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Ward%2C+Michael+B%2E%22">Ward, Michael B.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Haigh%2C+Sarah+J%2E%22">Haigh, Sarah J.</searchLink><relatesTo>4,5</relatesTo><br /><searchLink fieldCode="AR" term="%22Mosselmans%2C+J%2E+Frederick+W%2E%22">Mosselmans, J. Frederick W.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Peacock%2C+Caroline+L%2E%22">Peacock, Caroline L.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Stackhouse%2C+Stephen%22">Stackhouse, Stephen</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Dent%2C+Andrew+J%2E%22">Dent, Andrew J.</searchLink><relatesTo>6</relatesTo><br /><searchLink fieldCode="AR" term="%22Trivedi%2C+Divyesh%22">Trivedi, Divyesh</searchLink><relatesTo>7</relatesTo><br /><searchLink fieldCode="AR" term="%22Burke%2C+Ian+T%2E%22">Burke, Ian T.</searchLink><relatesTo>1</relatesTo><i> i.t.burke@leeds.ac.uk</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Applied+Clay+Science%22">Applied Clay Science</searchLink>. May2015, Vol. 108, p128-134. 7p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cesium%22">Cesium</searchLink><br /><searchLink fieldCode="DE" term="%22Illite%22">Illite</searchLink><br /><searchLink fieldCode="DE" term="%22Sorption%22">Sorption</searchLink><br /><searchLink fieldCode="DE" term="%22Clay+minerals%22">Clay minerals</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Radioactive+substances%22">Radioactive substances</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Radioactive caesium (chiefly 137 Cs) is a major environmental pollutant. The mobility of Cs in temperate soils is primarily controlled by sorption onto clay minerals, particularly the frayed edges of illite interlayers. This paper investigates the adsorption of Cs to illite at the molecular scale, over both the short and long term. Transmission electron microscopy (TEM) images showed that after initial absorption into the frayed edges, Cs migrated into the illite interlayer becoming incorporated within the mineral structure. Caesium initially exchanged with hydrated Ca at the frayed edges, causing them to collapse. This process was irreversible as Cs held in the collapsed interlayers was not exchangeable with Ca. Over the long term Cs did not remain at the edge of the illite crystals, but diffused into the interlayers by exchange with K. Results from extended X-ray absorption fine structure spectroscopy (EXAFS) and density functional theory modelling confirmed that Cs was incorporated into the illite interlayer and revealed its bonding environment. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Applied Clay Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.clay.2015.02.008 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 7 StartPage: 128 Subjects: – SubjectFull: Cesium Type: general – SubjectFull: Illite Type: general – SubjectFull: Sorption Type: general – SubjectFull: Clay minerals Type: general – SubjectFull: Transmission electron microscopy Type: general – SubjectFull: Radioactive substances Type: general Titles: – TitleFull: Caesium incorporation and retention in illite interlayers. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Fuller, Adam J. – PersonEntity: Name: NameFull: Shaw, Samuel – PersonEntity: Name: NameFull: Ward, Michael B. – PersonEntity: Name: NameFull: Haigh, Sarah J. – PersonEntity: Name: NameFull: Mosselmans, J. Frederick W. – PersonEntity: Name: NameFull: Peacock, Caroline L. – PersonEntity: Name: NameFull: Stackhouse, Stephen – PersonEntity: Name: NameFull: Dent, Andrew J. – PersonEntity: Name: NameFull: Trivedi, Divyesh – PersonEntity: Name: NameFull: Burke, Ian T. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 05 Text: May2015 Type: published Y: 2015 Identifiers: – Type: issn-print Value: 01691317 Numbering: – Type: volume Value: 108 Titles: – TitleFull: Applied Clay Science Type: main |
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