Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/1199
DC FieldValueLanguage
dc.contributor.authorHarris, Willie G.-
dc.contributor.authorO'Connor, George A.-
dc.contributor.authorObreza, Thomas A.-
dc.contributor.authorMakris, Konstantinos C.-
dc.contributor.otherΜακρής, Κωνσταντίνος X.-
dc.date.accessioned2015-03-19T09:25:16Z-
dc.date.accessioned2015-12-02T09:03:03Z-
dc.date.available2015-03-19T09:25:16Z-
dc.date.available2015-12-02T09:03:03Z-
dc.date.issued2004-12-15-
dc.identifier.citationEnvironmental Science & Technology, 2004, Volume 38, Issue 24, Pages 6590-6596en_US
dc.identifier.issn15205851-
dc.identifier.urihttps://hdl.handle.net/20.500.14279/1199-
dc.description.abstractDrinking-water treatment residuals (WTRs) can immobilize excess soil phosphorus (P), but little is known about the long-term P retention by WTRs. To evaluate the long-term P sorption characteristics of one Fe- and one Al-based WTR, physicochemical properties pertinent to time-dependency and hysteresis of P sorption were assessed. This study also investigated the P sorption mechanisms that could affect the long-term stability of sorbed P by WTRs. Phosphorus sorption kinetics by the WTRs exhibited a slow phase that followed an initial rapid phase, as typically occurs with metal hydroxides. Phosphorus sorption maxima for both Fe- and Al-based WTRs exceeded 9100 mg of P kg-1 and required a greater specific surface area (SSA) than would be available based on BET-N2 calculations. Electron microprobe analyses of cross-sectional, P-treated particles showed three-dimensional P sorption by WTRs. Carbon dioxide gas sorption was greater than N2, suggesting steric restriction of N2 diffusion by narrow micropore openings. Phosphorus-treated CO 2 SSAs were reduced by P treatment, suggesting P sorption by micropores (5-20 Å). Mercury intrusion porosimetry indicated negligible macroporosity (pores > 500 Å). Slow P sorption kinetics by WTRs may be explained by intraparticle P diffusion in micropores. Micropore-bound P should be stable and immobilized over long periods.en_US
dc.formatpdfen_US
dc.language.isoenen_US
dc.relation.ispartofEnvironmental Science & Technologyen_US
dc.rights© American Chemical Societyen_US
dc.subjectCarbon dioxideen_US
dc.subjectPorosimetersen_US
dc.subjectSorptionen_US
dc.subjectWater treatmenten_US
dc.subjectDrinking-water treatment residuals (WTR)en_US
dc.subjectPhosphorus immobilizationen_US
dc.titlePhosphorus immobilization in micropores of drinking-water treatment residuals: implications for long-term stabilityen_US
dc.typeArticleen_US
dc.collaborationUniversity of Floridaen_US
dc.subject.categoryEarth and Related Environmental Sciencesen_US
dc.journalsSubscriptionen_US
dc.reviewPeer Revieweden
dc.countryUnited Statesen_US
dc.subject.fieldNatural Sciencesen_US
dc.publicationPeer Revieweden_US
dc.identifier.doi10.1021/es049161jen_US
dc.dept.handle123456789/54en
dc.relation.issue24en_US
dc.relation.volume38en_US
cut.common.academicyear2004-2005en_US
item.fulltextNo Fulltext-
item.languageiso639-1en-
item.grantfulltextnone-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.cerifentitytypePublications-
item.openairetypearticle-
crisitem.journal.journalissn1520-5851-
crisitem.journal.publisherAmerican Chemical Society-
crisitem.author.deptDepartment of Rehabilitation Sciences-
crisitem.author.facultyFaculty of Health Sciences-
crisitem.author.orcid0000-0001-5251-8619-
crisitem.author.parentorgFaculty of Health Sciences-
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