Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model
Identifieur interne : 001097 ( Istex/Corpus ); précédent : 001096; suivant : 001098Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model
Auteurs : Thomas Rabung ; Horst Geckeis ; Jae-Il Kim ; Horst Philipp BeckSource :
- Journal of Colloid And Interface Science [ 0021-9797 ] ; 1998.
English descriptors
- KwdEn :
- Teeft :
- Academic press, Acidity constants, Acta, Adsorption, Base constants, Base properties, Capacitance, Carbonate complexation, Code fiteql, Colloid interface, Complexation, Complexation constants, Complexation reaction, Considerable fraction, Constant capacitance model, Distribution ratios, Electrostatic term, Elemental composition, Experimental conditions, Experimental data, Experimental results, Fiteql, Free concentration, Function plot, Graphical method, Hematite, Hematite surface, High concentrations, High surface coverage, High surface coverages, Higher concentrations, Higher surface coverage, Higher surface coverages, Hydroxyl, Interface, Interface geochemistry, Ionic strength, Isotherm, Isotherm data, Langmuir, Langmuir equation, Langmuir formalism, Langmuir isotherm, Latter procedure, Literature data, Meaningful comparison, Mineral surface, Mineral surfaces, Mineralogical society, Model system, Modeling, Monodentate complexation, Naclo4, Natural hematite, Natural minerals, Nonideal sorption behavior, Precipitation, Present study, Rare earth elements, Reversibility studies, Several orders, Site complexation, Sorbate concentration, Sorption, Sorption behavior, Sorption constants, Sorption data, Sorption experiments, Sorption isotherm, Sorption isotherms, Sorption mechanisms, Sorption process, Sorption reaction, Sorption reactions, Strong site complexation, Surface area, Surface charge, Surface charge effect, Surface complexation, Surface complexation constants, Surface complexation model, Surface complexation modeling, Surface complexation models, Surface complexation reaction, Surface coverage, Surface coverages, Surface hydroxyl groups, Surface precipitation, Surface precipitation reaction, Surface site concentration, Surface sites, Surface species, Synthetic hematite, Titration, Titration data, Total concentration, Trivalent, Trivalent actinides, Trivalent elements, Tting, Tting titration data, Weak sites.
Abstract
The solid/water interface reaction is investigated for the sorption of the Eu3+ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO4. Sorption isotherms are determined at different pH. The sorption of Eu3+onto hematite at coverages <1% of the surface hydroxyl groups follows the ideal Nernst behavior and can be interpreted in terms of the surface complexation by the following equilibrium reaction: XOH + Eu3+⇔ XOEu2++ H+(logKintx= 2.50 ± 0.19). Complexation constants are calculated by either graphically interpretating the sorption isotherms or fitting the data using the code FITEQL. At higher surface coverages a deviation from the Nernst behavior is observed which can be described satisfactorily by a two-site surface complexation model, taking into account the lateral electrostatic interaction of surface-bound Eu(III): YOH + Eu3+⇔ YOEu2++ H+(logKinty= −0.82 ± 0.11). The experimental results are compared with data published in the literature, and the interpretation of sorption isotherms with regard to the sorption mechanisms is critically discussed.
Url:
DOI: 10.1006/jcis.1998.5788
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ISTEX:A28D6B10AD4C729B0163722234D842C90C0E84A6Le document en format XML
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Box 15 11 50, D-66041, Saarbrücken, Germany</json:string></affiliations></json:item><json:item><name>Horst Geckeis</name><affiliations><json:string>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</json:string></affiliations></json:item><json:item><name>Jae-Il Kim</name><affiliations><json:string>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</json:string></affiliations></json:item><json:item><name>Horst Philipp Beck</name><affiliations><json:string>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>adsorption isotherms</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>surface complexation modeling</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>europium</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>hematite</value></json:item></subject><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>The solid/water interface reaction is investigated for the sorption of the Eu3+ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO4. Sorption isotherms are determined at different pH. The sorption of Eu3+onto hematite at coverages >1% of the surface hydroxyl groups follows the ideal Nernst behavior and can be interpreted in terms of the surface complexation by the following equilibrium reaction: XOH + Eu3+⇔ XOEu2++ H+(logKintx= 2.50 ± 0.19). Complexation constants are calculated by either graphically interpretating the sorption isotherms or fitting the data using the code FITEQL. At higher surface coverages a deviation from the Nernst behavior is observed which can be described satisfactorily by a two-site surface complexation model, taking into account the lateral electrostatic interaction of surface-bound Eu(III): YOH + Eu3+⇔ YOEu2++ H+(logKinty= −0.82 ± 0.11). The experimental results are compared with data published in the literature, and the interpretation of sorption isotherms with regard to the sorption mechanisms is critically discussed.</abstract><qualityIndicators><score>6.896</score><pdfVersion>1.2</pdfVersion><pdfPageSize>545 x 731 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>4</keywordCount><abstractCharCount>1088</abstractCharCount><pdfWordCount>5756</pdfWordCount><pdfCharCount>33945</pdfCharCount><pdfPageCount>9</pdfPageCount><abstractWordCount>158</abstractWordCount></qualityIndicators><title>Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</title><pii><json:string>S0021-9797(98)95788-5</json:string></pii><genre><json:string>research-article</json:string></genre><host><title>Journal of Colloid And Interface Science</title><language><json:string>unknown</json:string></language><publicationDate>1998</publicationDate><issn><json:string>0021-9797</json:string></issn><pii><json:string>S0021-9797(00)X0068-9</json:string></pii><volume>208</volume><issue>1</issue><pages><first>153</first><last>161</last></pages><genre><json:string>journal</json:string></genre></host><categories><wos><json:string>science</json:string><json:string>chemistry, physical</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>physics & astronomy</json:string><json:string>chemical physics</json:string></scienceMetrix><inist><json:string>sciences appliquees, technologies et medecines</json:string><json:string>sciences exactes et technologie</json:string><json:string>chimie</json:string><json:string>chimie generale et chimie physique</json:string></inist></categories><publicationDate>1998</publicationDate><copyrightDate>1998</copyrightDate><doi><json:string>10.1006/jcis.1998.5788</json:string></doi><id>A28D6B10AD4C729B0163722234D842C90C0E84A6</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/A28D6B10AD4C729B0163722234D842C90C0E84A6/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/A28D6B10AD4C729B0163722234D842C90C0E84A6/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/A28D6B10AD4C729B0163722234D842C90C0E84A6/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main" xml:lang="en">Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>©1998 Academic Press</p></availability><date>1998</date></publicationStmt><notesStmt><note>M. F. HochellaA. F. White</note><note type="content">Section title: Regular Article</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a" type="main" xml:lang="en">Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</title><author xml:id="author-0000"><persName><forename type="first">Thomas</forename><surname>Rabung</surname></persName><affiliation>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Horst</forename><surname>Geckeis</surname></persName><affiliation>To whom correspondence should be addressed.</affiliation><affiliation>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</affiliation></author><author xml:id="author-0002"><persName><forename type="first">Jae-Il</forename><surname>Kim</surname></persName><affiliation>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</affiliation></author><author xml:id="author-0003"><persName><forename type="first">Horst Philipp</forename><surname>Beck</surname></persName><affiliation>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</affiliation></author><idno type="istex">A28D6B10AD4C729B0163722234D842C90C0E84A6</idno><idno type="DOI">10.1006/jcis.1998.5788</idno><idno type="PII">S0021-9797(98)95788-5</idno></analytic><monogr><title level="j">Journal of Colloid And Interface Science</title><title level="j" type="abbrev">YJCIS</title><idno type="pISSN">0021-9797</idno><idno type="PII">S0021-9797(00)X0068-9</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1998"></date><biblScope unit="volume">208</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="153">153</biblScope><biblScope unit="page" to="161">161</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1998</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>The solid/water interface reaction is investigated for the sorption of the Eu3+ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO4. Sorption isotherms are determined at different pH. The sorption of Eu3+onto hematite at coverages <1% of the surface hydroxyl groups follows the ideal Nernst behavior and can be interpreted in terms of the surface complexation by the following equilibrium reaction: XOH + Eu3+⇔ XOEu2++ H+(logKintx= 2.50 ± 0.19). Complexation constants are calculated by either graphically interpretating the sorption isotherms or fitting the data using the code FITEQL. At higher surface coverages a deviation from the Nernst behavior is observed which can be described satisfactorily by a two-site surface complexation model, taking into account the lateral electrostatic interaction of surface-bound Eu(III): YOH + Eu3+⇔ YOEu2++ H+(logKinty= −0.82 ± 0.11). The experimental results are compared with data published in the literature, and the interpretation of sorption isotherms with regard to the sorption mechanisms is critically discussed.</p></abstract><textClass xml:lang="en"><keywords scheme="keyword"><list><head>Keywords</head><item><term>adsorption isotherms</term></item><item><term>surface complexation modeling</term></item><item><term>europium</term></item><item><term>hematite</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1998">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/A28D6B10AD4C729B0163722234D842C90C0E84A6/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla" xml:lang="en"><item-info><jid>YJCIS</jid><aid>95788</aid><ce:pii>S0021-9797(98)95788-5</ce:pii><ce:doi>10.1006/jcis.1998.5788</ce:doi><ce:copyright type="full-transfer" year="1998">Academic Press</ce:copyright></item-info><head><ce:article-footnote><ce:label>☆</ce:label><ce:note-para>M. F. HochellaA. F. White</ce:note-para></ce:article-footnote><ce:dochead><ce:textfn>Regular Article</ce:textfn></ce:dochead><ce:title>Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</ce:title><ce:author-group><ce:author><ce:given-name>Thomas</ce:given-name><ce:surname>Rabung</ce:surname><ce:cross-ref refid="CS985788A1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Horst</ce:given-name><ce:surname>Geckeis</ce:surname><ce:cross-ref refid="CS985788A2"><ce:sup>b</ce:sup></ce:cross-ref><ce:cross-ref refid="CS985788FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Jae-Il</ce:given-name><ce:surname>Kim</ce:surname><ce:cross-ref refid="CS985788A2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Horst Philipp</ce:given-name><ce:surname>Beck</ce:surname><ce:cross-ref refid="CS985788A1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="CS985788A1"><ce:label>a</ce:label><ce:textfn>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</ce:textfn></ce:affiliation><ce:affiliation id="CS985788A2"><ce:label>b</ce:label><ce:textfn>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</ce:textfn></ce:affiliation><ce:footnote id="CS985788FN1"><ce:label>1</ce:label><ce:note-para>To whom correspondence should be addressed.</ce:note-para></ce:footnote></ce:author-group><ce:date-received day="23" month="2" year="1998"></ce:date-received><ce:date-accepted day="6" month="8" year="1998"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>The solid/water interface reaction is investigated for the sorption of the Eu<ce:sup>3+</ce:sup>ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO<ce:inf>4</ce:inf>. Sorption isotherms are determined at different pH. The sorption of Eu<ce:sup>3+</ce:sup>onto hematite at coverages <1% of the surface hydroxyl groups follows the ideal Nernst behavior and can be interpreted in terms of the surface complexation by the following equilibrium reaction: XOH + Eu<ce:sup>3+</ce:sup>⇔ XOEu<ce:sup>2+</ce:sup>+ H<ce:sup>+</ce:sup>(log<ce:italic>K</ce:italic><ce:sup>int</ce:sup><ce:inf>x</ce:inf>= 2.50 ± 0.19). Complexation constants are calculated by either graphically interpretating the sorption isotherms or fitting the data using the code FITEQL. At higher surface coverages a deviation from the Nernst behavior is observed which can be described satisfactorily by a two-site surface complexation model, taking into account the lateral electrostatic interaction of surface-bound Eu(III): YOH + Eu<ce:sup>3+</ce:sup>⇔ YOEu<ce:sup>2+</ce:sup>+ H<ce:sup>+</ce:sup>(log<ce:italic>K</ce:italic><ce:sup>int</ce:sup><ce:inf>y</ce:inf>= −0.82 ± 0.11). The experimental results are compared with data published in the literature, and the interpretation of sorption isotherms with regard to the sorption mechanisms is critically discussed.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:keywords><ce:section-title>Keywords</ce:section-title><ce:keyword><ce:text>adsorption isotherms</ce:text></ce:keyword><ce:keyword><ce:text>surface complexation modeling</ce:text></ce:keyword><ce:keyword><ce:text>europium</ce:text></ce:keyword><ce:keyword><ce:text>hematite</ce:text></ce:keyword></ce:keywords></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</title></titleInfo><titleInfo type="alternative" lang="en" contentType="CDATA"><title>Sorption of Eu(III) on a Natural Hematite: Application of a Surface Complexation Model</title></titleInfo><name type="personal"><namePart type="given">Thomas</namePart><namePart type="family">Rabung</namePart><affiliation>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Horst</namePart><namePart type="family">Geckeis</namePart><affiliation>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</affiliation><description>To whom correspondence should be addressed.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jae-Il</namePart><namePart type="family">Kim</namePart><affiliation>Forschungszentrum Karlsruhe, Institut für Nukleare Entsorgungstechnik, P.O. Box 3640, D-76021, Karlsruhe, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Horst Philipp</namePart><namePart type="family">Beck</namePart><affiliation>Universität des Saarlandes, Anorganische und Analytische Chemie und Radiochemie, P.O. Box 15 11 50, D-66041, Saarbrücken, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1998</dateIssued><copyrightDate encoding="w3cdtf">1998</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">The solid/water interface reaction is investigated for the sorption of the Eu3+ion onto a well-characterized natural hematite at pH ≤6 in 0.1 mol/L NaClO4. Sorption isotherms are determined at different pH. The sorption of Eu3+onto hematite at coverages <1% of the surface hydroxyl groups follows the ideal Nernst behavior and can be interpreted in terms of the surface complexation by the following equilibrium reaction: XOH + Eu3+⇔ XOEu2++ H+(logKintx= 2.50 ± 0.19). Complexation constants are calculated by either graphically interpretating the sorption isotherms or fitting the data using the code FITEQL. At higher surface coverages a deviation from the Nernst behavior is observed which can be described satisfactorily by a two-site surface complexation model, taking into account the lateral electrostatic interaction of surface-bound Eu(III): YOH + Eu3+⇔ YOEu2++ H+(logKinty= −0.82 ± 0.11). The experimental results are compared with data published in the literature, and the interpretation of sorption isotherms with regard to the sorption mechanisms is critically discussed.</abstract><note>M. F. HochellaA. F. White</note><note type="content">Section title: Regular Article</note><subject lang="en"><genre>Keywords</genre><topic>adsorption isotherms</topic><topic>surface complexation modeling</topic><topic>europium</topic><topic>hematite</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Colloid And Interface Science</title></titleInfo><titleInfo type="abbreviated"><title>YJCIS</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">19981201</dateIssued></originInfo><identifier type="ISSN">0021-9797</identifier><identifier type="PII">S0021-9797(00)X0068-9</identifier><part><date>19981201</date><detail type="volume"><number>208</number><caption>vol.</caption></detail><detail type="issue"><number>1</number><caption>no.</caption></detail><extent unit="issue pages"><start>1</start><end>355</end></extent><extent unit="pages"><start>153</start><end>161</end></extent></part></relatedItem><identifier type="istex">A28D6B10AD4C729B0163722234D842C90C0E84A6</identifier><identifier type="DOI">10.1006/jcis.1998.5788</identifier><identifier type="PII">S0021-9797(98)95788-5</identifier><accessCondition type="use and reproduction" contentType="copyright">©1998 Academic Press</accessCondition><recordInfo><recordContentSource>ELSEVIER</recordContentSource><recordOrigin>Academic Press, ©1998</recordOrigin></recordInfo></mods></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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