Study of arsenic(III) and arsenic(V) removal from waters using ferric hydroxide supported on silica gel prepared at low pH

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dc.contributor.authorCiftci, Tulin Deniz
dc.contributor.authorYayayuruk, Onur
dc.contributor.authorHenden, Emur
dc.date.accessioned2019-10-27T21:26:59Z
dc.date.available2019-10-27T21:26:59Z
dc.date.issued2011
dc.departmentEge Üniversitesien_US
dc.description.abstractRemoval of As(III) and As(V) species using ferric hydroxide supported on silica gel was studied. Laboratory reagent quality silica gel was used as to avoid uncertainties that may be caused by impurities. Ferric hydroxide precipitation was realized at various pH values and a relatively low pH 6.0 was chosen because, at this pH, the highest arsenic removal capacity and removal efficiency were obtained and clear supernatant solution was observed. It was also shown by arsenic speciation analysis at trace level that As(III) is adsorbed onto ferric hydroxide partly without oxidation to As(V); this has been a controversial point in the literature. The effects on arsenic removal of some parameters such as pH, flow rate and matrix ions were investigated. In the batch method, initial pH change of the solution did not significantly affect the arsenic removal efficiencies for As(III) and As(V) in the pH range of 3.1-9.7. This was attributed to the decreases of the initial pH values to around 5 at equilibrium. The column capacities of 1.32 mg As(III)/g sorbent and 1.21 mg As(V)/g sorbent were found for initial concentration of 1.00 mg/L arsenic. Batch capacities were 16.2 mg As(III)/g sorbent and 17.7 mg As(V)/g sorbent for initial arsenic concentration of 100 mg/L. The method was applied successfully to the removal of As(III) and As(V) from drinking water, geothermal water and mineral water.en_US
dc.description.sponsorshipEge UniversityEge Universityen_US
dc.description.sponsorshipThis project was supported by the Research Fund of Ege University. The authors thank Filiz Yigit for her contributions to this project.en_US
dc.identifier.doi10.1080/09593330.2010.499546en_US
dc.identifier.endpage351en_US
dc.identifier.issn0959-3330
dc.identifier.issn1479-487X
dc.identifier.issue3en_US
dc.identifier.pmid21780702en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage341en_US
dc.identifier.urihttps://doi.org/10.1080/09593330.2010.499546
dc.identifier.urihttps://hdl.handle.net/11454/45027
dc.identifier.volume32en_US
dc.identifier.wosWOS:000288958300011en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.ispartofEnvironmental Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectarsenic removalen_US
dc.subjectdrinking wateren_US
dc.subjectgeothermal wateren_US
dc.subjectmineral wateren_US
dc.subjectferric hydroxideen_US
dc.titleStudy of arsenic(III) and arsenic(V) removal from waters using ferric hydroxide supported on silica gel prepared at low pHen_US
dc.typeArticleen_US

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