Enhanced Sorption of Trichloroethene by Smectite Clay Exchanged with Cs
Trichloroethene (TCE) is one of the most common pollutants in groundwater, and Cs+ can be a cocontaminant at nuclear facilities. Smectite clays have large surface areas, are common in soils, have high affinities for some organic contaminants, and hence can potentially influence the transport of orga...
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| Veröffentlicht in: | Environmental science & technology 2006-02, Vol.40 (3), p.894-899 |
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| creator | Aggarwal, Vaneet Li, Hui Boyd, Stephen A Teppen, Brian J |
| description | Trichloroethene (TCE) is one of the most common pollutants in groundwater, and Cs+ can be a cocontaminant at nuclear facilities. Smectite clays have large surface areas, are common in soils, have high affinities for some organic contaminants, and hence can potentially influence the transport of organic pollutants entering soils and sediments. The exchangeable cations present near smectite clay surfaces can radically influence the sorption of organic pollutants by soil clays. This research was undertaken to determine the effect of Cs+, and other common interlayer cations, such as K+ and Ca2+, on the sorption of TCE by a reference smectite clay saponite. Cs-saturated clay sorbed the most TCE, up to 3500 mg/kg, while Ca-saturated smectite sorbed the least. We hypothesize that the stronger sorption of TCE by the Cs-smectite can be attributed to the lower hydration energy and hence smaller hydrated radius of Cs+, which expands the lateral clay surface domains available for sorption. Also, Cs-smectite interlayers are only one or two water layers thick, which may drive capillary condensation of TCE. Our results implicate enhanced retention of TCE in aquifer materials containing smectites accompanied by Cs+ cocontamination. |
| doi_str_mv | 10.1021/es0500411 |
| format | Article |
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Smectite clays have large surface areas, are common in soils, have high affinities for some organic contaminants, and hence can potentially influence the transport of organic pollutants entering soils and sediments. The exchangeable cations present near smectite clay surfaces can radically influence the sorption of organic pollutants by soil clays. This research was undertaken to determine the effect of Cs+, and other common interlayer cations, such as K+ and Ca2+, on the sorption of TCE by a reference smectite clay saponite. Cs-saturated clay sorbed the most TCE, up to 3500 mg/kg, while Ca-saturated smectite sorbed the least. We hypothesize that the stronger sorption of TCE by the Cs-smectite can be attributed to the lower hydration energy and hence smaller hydrated radius of Cs+, which expands the lateral clay surface domains available for sorption. Also, Cs-smectite interlayers are only one or two water layers thick, which may drive capillary condensation of TCE. Our results implicate enhanced retention of TCE in aquifer materials containing smectites accompanied by Cs+ cocontamination.</description><identifier>ISSN: 0013-936X</identifier><identifier>EISSN: 1520-5851</identifier><identifier>DOI: 10.1021/es0500411</identifier><identifier>PMID: 16509334</identifier><identifier>CODEN: ESTHAG</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Adsorption ; Aluminum Silicates ; Applied sciences ; Aquifers ; Cesium - chemistry ; Clay ; Earth sciences ; Earth, ocean, space ; Engineering and environment geology. Geothermics ; Environmental science ; Exact sciences and technology ; Groundwater ; Groundwaters ; Natural water pollution ; Pollutants ; Pollution ; Pollution, environment geology ; Radioactive Waste ; Silicates - chemistry ; Soil Pollutants - isolation & purification ; Solvents - chemistry ; Sorption ; Trichloroethylene - chemistry ; Water filtration ; Water Pollutants - isolation & purification ; Water Supply ; Water treatment and pollution</subject><ispartof>Environmental science & technology, 2006-02, Vol.40 (3), p.894-899</ispartof><rights>Copyright © 2006 American Chemical Society</rights><rights>2006 INIST-CNRS</rights><rights>Copyright American Chemical Society Feb 1, 2006</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a431t-2f7444bba1a19cd6950b327208b556150d0b819fc0b4b552acb8168e2acd4bd3</citedby><cites>FETCH-LOGICAL-a431t-2f7444bba1a19cd6950b327208b556150d0b819fc0b4b552acb8168e2acd4bd3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/es0500411$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/es0500411$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2765,27076,27924,27925,56738,56788</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=17730993$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/16509334$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Aggarwal, Vaneet</creatorcontrib><creatorcontrib>Li, Hui</creatorcontrib><creatorcontrib>Boyd, Stephen A</creatorcontrib><creatorcontrib>Teppen, Brian J</creatorcontrib><title>Enhanced Sorption of Trichloroethene by Smectite Clay Exchanged with Cs</title><title>Environmental science & technology</title><addtitle>Environ. Sci. Technol</addtitle><description>Trichloroethene (TCE) is one of the most common pollutants in groundwater, and Cs+ can be a cocontaminant at nuclear facilities. Smectite clays have large surface areas, are common in soils, have high affinities for some organic contaminants, and hence can potentially influence the transport of organic pollutants entering soils and sediments. The exchangeable cations present near smectite clay surfaces can radically influence the sorption of organic pollutants by soil clays. This research was undertaken to determine the effect of Cs+, and other common interlayer cations, such as K+ and Ca2+, on the sorption of TCE by a reference smectite clay saponite. Cs-saturated clay sorbed the most TCE, up to 3500 mg/kg, while Ca-saturated smectite sorbed the least. We hypothesize that the stronger sorption of TCE by the Cs-smectite can be attributed to the lower hydration energy and hence smaller hydrated radius of Cs+, which expands the lateral clay surface domains available for sorption. Also, Cs-smectite interlayers are only one or two water layers thick, which may drive capillary condensation of TCE. Our results implicate enhanced retention of TCE in aquifer materials containing smectites accompanied by Cs+ cocontamination.</description><subject>Adsorption</subject><subject>Aluminum Silicates</subject><subject>Applied sciences</subject><subject>Aquifers</subject><subject>Cesium - chemistry</subject><subject>Clay</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Engineering and environment geology. Geothermics</subject><subject>Environmental science</subject><subject>Exact sciences and technology</subject><subject>Groundwater</subject><subject>Groundwaters</subject><subject>Natural water pollution</subject><subject>Pollutants</subject><subject>Pollution</subject><subject>Pollution, environment geology</subject><subject>Radioactive Waste</subject><subject>Silicates - chemistry</subject><subject>Soil Pollutants - isolation & purification</subject><subject>Solvents - chemistry</subject><subject>Sorption</subject><subject>Trichloroethylene - chemistry</subject><subject>Water filtration</subject><subject>Water Pollutants - isolation & purification</subject><subject>Water Supply</subject><subject>Water treatment and pollution</subject><issn>0013-936X</issn><issn>1520-5851</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNplkD9PwzAQxS0EoqUw8AVQhMTAEDjHdv6MKCoFCQRSMrBZtuOQlDQpdirab49Ro2Zg8tn3u3d-D6FLDHcYAnyvLTAAivERmmIWgM9iho_RFAATPyHhxwSdWbsEgIBAfIomOGSQEEKnaDFvK9EqXXhZZ9Z93bVeV3q5qVXVdKbTfaVb7cmdl6206utee2kjdt58q9zYpxv7qfvKS-05OilFY_XFcM5Q_jjP0yf_5W3xnD68-IIS3PtBGVFKpRRY4EQVYcJAkiAKIJaMhZhBATLGSalAUvcSCOWuYaxdUVBZkBm63suuTfe90bbny25jWreRO2vYadPIQbd7SJnOWqNLvjb1Spgdx8D_AuOHwBx7NQhu5EoXIzkk5ICbARBWiaY0Lq3ajlwUEUgcOUP-nqttr7eHvjBfPIxIxHj-nvHXLM5ZlsQ8G3WFsqOJ_x_8BTxWi68</recordid><startdate>20060201</startdate><enddate>20060201</enddate><creator>Aggarwal, Vaneet</creator><creator>Li, Hui</creator><creator>Boyd, Stephen A</creator><creator>Teppen, Brian J</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20060201</creationdate><title>Enhanced Sorption of Trichloroethene by Smectite Clay Exchanged with Cs</title><author>Aggarwal, Vaneet ; Li, Hui ; Boyd, Stephen A ; Teppen, Brian J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a431t-2f7444bba1a19cd6950b327208b556150d0b819fc0b4b552acb8168e2acd4bd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Adsorption</topic><topic>Aluminum Silicates</topic><topic>Applied sciences</topic><topic>Aquifers</topic><topic>Cesium - chemistry</topic><topic>Clay</topic><topic>Earth sciences</topic><topic>Earth, ocean, space</topic><topic>Engineering and environment geology. Geothermics</topic><topic>Environmental science</topic><topic>Exact sciences and technology</topic><topic>Groundwater</topic><topic>Groundwaters</topic><topic>Natural water pollution</topic><topic>Pollutants</topic><topic>Pollution</topic><topic>Pollution, environment geology</topic><topic>Radioactive Waste</topic><topic>Silicates - chemistry</topic><topic>Soil Pollutants - isolation & purification</topic><topic>Solvents - chemistry</topic><topic>Sorption</topic><topic>Trichloroethylene - chemistry</topic><topic>Water filtration</topic><topic>Water Pollutants - isolation & purification</topic><topic>Water Supply</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Aggarwal, Vaneet</creatorcontrib><creatorcontrib>Li, Hui</creatorcontrib><creatorcontrib>Boyd, Stephen A</creatorcontrib><creatorcontrib>Teppen, Brian J</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Environmental science & technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Aggarwal, Vaneet</au><au>Li, Hui</au><au>Boyd, Stephen A</au><au>Teppen, Brian J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Enhanced Sorption of Trichloroethene by Smectite Clay Exchanged with Cs</atitle><jtitle>Environmental science & technology</jtitle><addtitle>Environ. Sci. Technol</addtitle><date>2006-02-01</date><risdate>2006</risdate><volume>40</volume><issue>3</issue><spage>894</spage><epage>899</epage><pages>894-899</pages><issn>0013-936X</issn><eissn>1520-5851</eissn><coden>ESTHAG</coden><abstract>Trichloroethene (TCE) is one of the most common pollutants in groundwater, and Cs+ can be a cocontaminant at nuclear facilities. Smectite clays have large surface areas, are common in soils, have high affinities for some organic contaminants, and hence can potentially influence the transport of organic pollutants entering soils and sediments. The exchangeable cations present near smectite clay surfaces can radically influence the sorption of organic pollutants by soil clays. This research was undertaken to determine the effect of Cs+, and other common interlayer cations, such as K+ and Ca2+, on the sorption of TCE by a reference smectite clay saponite. Cs-saturated clay sorbed the most TCE, up to 3500 mg/kg, while Ca-saturated smectite sorbed the least. We hypothesize that the stronger sorption of TCE by the Cs-smectite can be attributed to the lower hydration energy and hence smaller hydrated radius of Cs+, which expands the lateral clay surface domains available for sorption. Also, Cs-smectite interlayers are only one or two water layers thick, which may drive capillary condensation of TCE. Our results implicate enhanced retention of TCE in aquifer materials containing smectites accompanied by Cs+ cocontamination.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>16509334</pmid><doi>10.1021/es0500411</doi><tpages>6</tpages></addata></record> |
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| subjects | Adsorption Aluminum Silicates Applied sciences Aquifers Cesium - chemistry Clay Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Environmental science Exact sciences and technology Groundwater Groundwaters Natural water pollution Pollutants Pollution Pollution, environment geology Radioactive Waste Silicates - chemistry Soil Pollutants - isolation & purification Solvents - chemistry Sorption Trichloroethylene - chemistry Water filtration Water Pollutants - isolation & purification Water Supply Water treatment and pollution |
| title | Enhanced Sorption of Trichloroethene by Smectite Clay Exchanged with Cs |
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