The Influence of Iron (II) and (III) on the Kinetics of Goethite Dissolution by EDTA

The dissolution of goethite in aqueous media containing EDTA, Fe(II), and Fe(III) has been studied. The main dissolution pathways involve the inner or outer sphere electron transfer in mixed-valence EDTA-bridged surface complexes and in surface “ion pairs.” A synergistic effect is observed between f...

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Veröffentlicht in:	Journal of colloid and interface science 1998-05, Vol.201 (1), p.13-19
Hauptverfasser:	Ballesteros, Marı́a C., Rueda, Elsa H., Blesa, Miguel A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry Exact sciences and technology FeII–EDTA/FeIII–EDTA complexes General and physical chemistry goethite reductive dissolution Solubility Solutions surface complexation
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container_title	Journal of colloid and interface science
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creator	Ballesteros, Marı́a C. Rueda, Elsa H. Blesa, Miguel A.
description	The dissolution of goethite in aqueous media containing EDTA, Fe(II), and Fe(III) has been studied. The main dissolution pathways involve the inner or outer sphere electron transfer in mixed-valence EDTA-bridged surface complexes and in surface “ion pairs.” A synergistic effect is observed between ferrous EDTA and free EDTA. The rate dependencies on [EDTA] and [FeII] are interpreted in terms of Fe(II) phase transfer from three different surface complexes: ≡FeIII–Y–FeII(Y is the EDTA anion), ≡FeIII–Y···FeIIY, and the dimeric species with adjacent sites ≡FeIII–Y and ≡FeIII–Y–FeII. Addition of iron(III) produces a rate decrease that is explained on the basis of the adsorption behavior of FeIIIY−, for which adsorption data are presented. The redox equilibration of the surface is discussed.
doi_str_mv	10.1006/jcis.1997.5360
format	Article
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The main dissolution pathways involve the inner or outer sphere electron transfer in mixed-valence EDTA-bridged surface complexes and in surface “ion pairs.” A synergistic effect is observed between ferrous EDTA and free EDTA. The rate dependencies on [EDTA] and [FeII] are interpreted in terms of Fe(II) phase transfer from three different surface complexes: ≡FeIII–Y–FeII(Y is the EDTA anion), ≡FeIII–Y···FeIIY, and the dimeric species with adjacent sites ≡FeIII–Y and ≡FeIII–Y–FeII. Addition of iron(III) produces a rate decrease that is explained on the basis of the adsorption behavior of FeIIIY−, for which adsorption data are presented. The redox equilibration of the surface is discussed.</description><identifier>ISSN: 0021-9797</identifier><identifier>EISSN: 1095-7103</identifier><identifier>DOI: 10.1006/jcis.1997.5360</identifier><identifier>CODEN: JCISA5</identifier><language>eng</language><publisher>San Diego, CA: Elsevier Inc</publisher><subject>Chemistry ; Exact sciences and technology ; FeII–EDTA/FeIII–EDTA complexes ; General and physical chemistry ; goethite ; reductive dissolution ; Solubility ; Solutions ; surface complexation</subject><ispartof>Journal of colloid and interface science, 1998-05, Vol.201 (1), p.13-19</ispartof><rights>1998 Academic Press</rights><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c352t-1f28dd0876a0721c90d9b17098939a8fcb2e49db367216b65b262ec9145a1de73</citedby><cites>FETCH-LOGICAL-c352t-1f28dd0876a0721c90d9b17098939a8fcb2e49db367216b65b262ec9145a1de73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0021979797953601$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2235962$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ballesteros, Marı́a C.</creatorcontrib><creatorcontrib>Rueda, Elsa H.</creatorcontrib><creatorcontrib>Blesa, Miguel A.</creatorcontrib><title>The Influence of Iron (II) and (III) on the Kinetics of Goethite Dissolution by EDTA</title><title>Journal of colloid and interface science</title><description>The dissolution of goethite in aqueous media containing EDTA, Fe(II), and Fe(III) has been studied. The main dissolution pathways involve the inner or outer sphere electron transfer in mixed-valence EDTA-bridged surface complexes and in surface “ion pairs.” A synergistic effect is observed between ferrous EDTA and free EDTA. The rate dependencies on [EDTA] and [FeII] are interpreted in terms of Fe(II) phase transfer from three different surface complexes: ≡FeIII–Y–FeII(Y is the EDTA anion), ≡FeIII–Y···FeIIY, and the dimeric species with adjacent sites ≡FeIII–Y and ≡FeIII–Y–FeII. Addition of iron(III) produces a rate decrease that is explained on the basis of the adsorption behavior of FeIIIY−, for which adsorption data are presented. The redox equilibration of the surface is discussed.</description><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>FeII–EDTA/FeIII–EDTA complexes</subject><subject>General and physical chemistry</subject><subject>goethite</subject><subject>reductive dissolution</subject><subject>Solubility</subject><subject>Solutions</subject><subject>surface complexation</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><recordid>eNp1kEFPwyAYhonRxDm9eu7Bgx5aP-iAclzmnI1LvNQzoUAzltou0Jns3wuZHj19bz6eF8iD0D2GAgOw5712ocBC8IKWDC7QDIOgOcdQXqIZAMG54IJfo5sQ9gAYUypmqGl2NquHrj_aQdts7LLaj0P2WNdPmRpMCjHFzRS5dzfYyemQsM1op52bbPbiQhj74-Qi1J6y9UuzvEVXneqDvfudc_T5um5Wb_n2Y1Ovlttcl5RMOe5IZQxUnCngBGsBRrSYg6hEKVTV6ZbYhTBtyeIpaxltCSNWC7ygChvLyzkqzvdqP4bgbScP3n0pf5IYZHIikxOZnMjkJBYezoWDClr1nVdDAv5ahJRUMBKx6ozZ-PlvZ70M2iU_xnmrJ2lG998LPxuPchs</recordid><startdate>19980501</startdate><enddate>19980501</enddate><creator>Ballesteros, Marı́a C.</creator><creator>Rueda, Elsa H.</creator><creator>Blesa, Miguel A.</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19980501</creationdate><title>The Influence of Iron (II) and (III) on the Kinetics of Goethite Dissolution by EDTA</title><author>Ballesteros, Marı́a C. ; Rueda, Elsa H. ; Blesa, Miguel A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c352t-1f28dd0876a0721c90d9b17098939a8fcb2e49db367216b65b262ec9145a1de73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>FeII–EDTA/FeIII–EDTA complexes</topic><topic>General and physical chemistry</topic><topic>goethite</topic><topic>reductive dissolution</topic><topic>Solubility</topic><topic>Solutions</topic><topic>surface complexation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ballesteros, Marı́a C.</creatorcontrib><creatorcontrib>Rueda, Elsa H.</creatorcontrib><creatorcontrib>Blesa, Miguel A.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ballesteros, Marı́a C.</au><au>Rueda, Elsa H.</au><au>Blesa, Miguel A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Influence of Iron (II) and (III) on the Kinetics of Goethite Dissolution by EDTA</atitle><jtitle>Journal of colloid and interface science</jtitle><date>1998-05-01</date><risdate>1998</risdate><volume>201</volume><issue>1</issue><spage>13</spage><epage>19</epage><pages>13-19</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>The dissolution of goethite in aqueous media containing EDTA, Fe(II), and Fe(III) has been studied. The main dissolution pathways involve the inner or outer sphere electron transfer in mixed-valence EDTA-bridged surface complexes and in surface “ion pairs.” A synergistic effect is observed between ferrous EDTA and free EDTA. The rate dependencies on [EDTA] and [FeII] are interpreted in terms of Fe(II) phase transfer from three different surface complexes: ≡FeIII–Y–FeII(Y is the EDTA anion), ≡FeIII–Y···FeIIY, and the dimeric species with adjacent sites ≡FeIII–Y and ≡FeIII–Y–FeII. Addition of iron(III) produces a rate decrease that is explained on the basis of the adsorption behavior of FeIIIY−, for which adsorption data are presented. The redox equilibration of the surface is discussed.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><doi>10.1006/jcis.1997.5360</doi><tpages>7</tpages></addata></record>
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subjects	Chemistry Exact sciences and technology FeII–EDTA/FeIII–EDTA complexes General and physical chemistry goethite reductive dissolution Solubility Solutions surface complexation
title	The Influence of Iron (II) and (III) on the Kinetics of Goethite Dissolution by EDTA
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