Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/4211
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dc.contributor.authorNagar, Rachana-
dc.contributor.authorSarkarb, Dibyendu-
dc.contributor.authorDattad, Rupali K.-
dc.contributor.authorMakris, Konstantinos C.-
dc.contributor.otherΜακρής, Κωνσταντίνος X.-
dc.date.accessioned2015-03-19T10:46:19Z-
dc.date.accessioned2015-12-08T11:09:40Z-
dc.date.available2015-03-19T10:46:19Z-
dc.date.available2015-12-08T11:09:40Z-
dc.date.issued2010-02-
dc.identifier.citationChemosphere, 2010, Volume 78, Issue 8, Pages 1028–1035en
dc.identifier.issn0045-6535-
dc.identifier.urihttp://ktisis.cut.ac.cy/handle/10488/4211-
dc.description.abstractDrinking-water treatment residual (WTR) have been proposed as a low-cost alternative sorbent for arsenic (As) – contaminated aquatic and soil systems. However, limited information exists regarding the effect of solution chemistry on As sorption by WTR. A batch incubation study was carried out to investigate the effect of solution pH (3–9) on As(V) sorption by Al- and Fe-based WTR as a function of solid: solution ratio (SSR) and initial As concentration. The effect of competing ligands (phosphate-P(V) and sulfate), and complexing metal (calcium) on As(V) sorption envelopes at the optimum SSR (200 g L−1) was also evaluated. At 200 g L−1 SSR, maximum As(V) sorption (∼100%) exhibited by the Fe-WTR was limited at the pH range of 3–7, whereas, the Al-WTR demonstrated ∼100% As(V) sorption in the entire pH range. The negative pH effect on As(V) sorption became more pronounced with increasing initial As concentrations and decreasing SSR. Sorption of As(V) by surfaces of both WTR decreased in the presence of P(V), exhibiting strong pH dependence. Only for the Fe-WTR, increased dissolved iron concentrations at pH > 7 supported a Fe-hydroxide reductive dissolution mechanism to account for the enhanced As sorption at alkaline pH. Addition of sulfate did not influence As(V) sorption by both WTR. A cooperative effect of calcium on As(V) sorption was observed at alkaline pH due to the formation of a calcium–arsenate phase. The constant capacitance model provided reasonable fits to the sorption envelope data for both single ion and binary ion (As and P) systems, but it was unable to explain the enhanced As sorption by the Fe-WTR at pH > 7.en
dc.formatpdfen
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.rights© Elsevier Ltd.en
dc.subjectArsenicen
dc.subjectSorptionen
dc.subjectDrinking-water treatment residual (WTR)en
dc.subjectWater qualityen
dc.subjectRemediationen
dc.titleEffect of solution chemistry on arsenic sorption by Fe- and Al-based drinking-water treatment residualsen
dc.typeArticleen
dc.collaborationWeiss Associates-
dc.collaborationMontclair State University-
dc.collaborationCyprus University of Technology-
dc.collaborationMichigan Technological University-
dc.subject.categoryEarth and Related Environmental Sciencesen
dc.journalsSubscription Journal-
dc.reviewPeer Revieweden
dc.countryCyprus-
dc.countryUSA-
dc.subject.fieldNatural Sciencesen
dc.identifier.doihttp://dx.doi.org/10.1016/j.chemosphere.2009.11.034en
dc.dept.handle123456789/108en
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_6501-
item.languageiso639-1en-
item.openairetypearticle-
item.grantfulltextnone-
item.cerifentitytypePublications-
crisitem.author.deptCyprus International Institute for Environmental and Public Health-
crisitem.author.facultyFaculty of Health Sciences-
crisitem.author.orcid0000-0001-5251-8619-
crisitem.author.parentorgFaculty of Health Sciences-
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