Removal of toxic hexavalent chromium ions from aqueous solution by a natural biomaterial: Batch and column adsorption

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dc.contributor.authorGürbüz, Fatma
dc.date.accessioned13.07.201910:50:10
dc.date.accessioned2019-07-16T08:24:13Z
dc.date.available13.07.201910:50:10
dc.date.available2019-07-16T08:24:13Z
dc.date.issued2009
dc.departmentMühendislik Fakültesi
dc.description.abstractThe results of the removal of chromium(VI) ions from the aqueous phase employing different algal biomasses as bio-adsorbents are presented. Batch and column experiments were performed to determine the maximum adsorption capacity of the selected adsorbents. Algae were immobilised by employing pumice or silica gel as alternative substances for polymer matrices. The effects of pH, contact time, initial Cr(VI) ion concentration and adsorbent concentration were tested.Results are presented showing that the maximum adsorption capacity occurred at pH 2 when Scenedesmus obliquus and Arthospira maxima were employed as adsorbents. A biphasic Cr(VI) ion removal pattern was observed in all experiments. The effects of Cr(VI) ion loading on both the free and immobilised biomass were tested to allow the applications to be compared. The maximum removal extent of Cr(VI) ions from the aqueous phase was 18.98 ± 0.32 mg/mg free S. obliquus and 18.37 ± 0.28 mg/mg immobilised S. obliquus. The results show that immobilisation of the biomaterial made only a small difference to the extent of Cr(VI) ion removal. However, it is a much more suitable process for industrial applications since it can be continuously applied.The recovery of loaded metal ions was studied when it was found that HCl was very effective for desorbing Cr(VI) ions adsorbed onto the biomass. The results indicate that S. obliquus biomass is a potential candidate for the development of an efficient adsorbent for the removal of Cr(VI) ions from wastewater.
dc.identifier.doi10.1260/0263-6174.27.8.745
dc.identifier.endpage759en_US
dc.identifier.issn0263-6174
dc.identifier.issue8en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage745en_US
dc.identifier.urihttps://dx.doi.org/10.1260/0263-6174.27.8.745
dc.identifier.urihttps://hdl.handle.net/20.500.12451/2887
dc.identifier.volume27en_US
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.relation.ispartofAdsorption Science and Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleRemoval of toxic hexavalent chromium ions from aqueous solution by a natural biomaterial: Batch and column adsorption
dc.typeArticle

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