Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/1199
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Harris, Willie G. | - |
dc.contributor.author | O'Connor, George A. | - |
dc.contributor.author | Obreza, Thomas A. | - |
dc.contributor.author | Makris, Konstantinos C. | - |
dc.contributor.other | Μακρής, Κωνσταντίνος X. | - |
dc.date.accessioned | 2015-03-19T09:25:16Z | - |
dc.date.accessioned | 2015-12-02T09:03:03Z | - |
dc.date.available | 2015-03-19T09:25:16Z | - |
dc.date.available | 2015-12-02T09:03:03Z | - |
dc.date.issued | 2004-12-15 | - |
dc.identifier.citation | Environmental Science & Technology, 2004, Volume 38, Issue 24, Pages 6590-6596 | en_US |
dc.identifier.issn | 15205851 | - |
dc.identifier.uri | https://hdl.handle.net/20.500.14279/1199 | - |
dc.description.abstract | Drinking-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.format | en_US | |
dc.language.iso | en | en_US |
dc.relation.ispartof | Environmental Science & Technology | en_US |
dc.rights | © American Chemical Society | en_US |
dc.subject | Carbon dioxide | en_US |
dc.subject | Porosimeters | en_US |
dc.subject | Sorption | en_US |
dc.subject | Water treatment | en_US |
dc.subject | Drinking-water treatment residuals (WTR) | en_US |
dc.subject | Phosphorus immobilization | en_US |
dc.title | Phosphorus immobilization in micropores of drinking-water treatment residuals: implications for long-term stability | en_US |
dc.type | Article | en_US |
dc.collaboration | University of Florida | en_US |
dc.subject.category | Earth and Related Environmental Sciences | en_US |
dc.journals | Subscription | en_US |
dc.review | Peer Reviewed | en |
dc.country | United States | en_US |
dc.subject.field | Natural Sciences | en_US |
dc.publication | Peer Reviewed | en_US |
dc.identifier.doi | 10.1021/es049161j | en_US |
dc.dept.handle | 123456789/54 | en |
dc.relation.issue | 24 | en_US |
dc.relation.volume | 38 | en_US |
cut.common.academicyear | 2004-2005 | en_US |
item.fulltext | No Fulltext | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.cerifentitytype | Publications | - |
item.openairetype | article | - |
crisitem.journal.journalissn | 1520-5851 | - |
crisitem.journal.publisher | American Chemical Society | - |
crisitem.author.dept | Department of Rehabilitation Sciences | - |
crisitem.author.faculty | Faculty of Health Sciences | - |
crisitem.author.orcid | 0000-0001-5251-8619 | - |
crisitem.author.parentorg | Faculty of Health Sciences | - |
Appears in Collections: | Άρθρα/Articles |
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