Removal of Cr (VI) from aqueous solution by pyrolytic charcoals

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dc.contributor.authorAltun, Türkan
dc.contributor.authorKar, Yakup
dc.date.accessioned2020-03-26T19:26:01Z
dc.date.available2020-03-26T19:26:01Z
dc.date.issued2016
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractBio-chars produced by the pyrolysis of walnut shells at 450 degrees C (BC450) and theco-pyrolysis of walnut shells and 20 wt% tar sand (BCTS20) at the same temperature, were investigated as potential adsorbents for the removal of Cr(VI) ions from aqueous solutions using batch experiments. The BCTS20 has more abundant surface functional groups than BC450. The Cr(VI) removal percentages under optimal conditions were 80.47and 95.69% for BC450 and BCTS20, respectively. Langmuir, Freundlich and D-R models were used to fit the adsorption isotherms and the Langmuir model described the adsorption isotherms best. The adsorption of Cr(VI) was by a chemical process dominated by ion-exchange, electrostatic attraction and chelation. The maximum Langmuir adsorption capacities were 36.55 and 49.76 mg per g of BC450 and BCTS20, respectively. The maximum Langmuir adsorption capacity of BCTS20 is comparable to that of some reported commercial activated carbons.en_US
dc.identifier.endpage509en_US
dc.identifier.issn1007-8827en_US
dc.identifier.issue5en_US
dc.identifier.startpage501en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12395/33942
dc.identifier.volume31en_US
dc.identifier.wosWOS:000387735700006en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isozhen_US
dc.publisherELSEVIER SCIENCE BVen_US
dc.relation.ispartofNEW CARBON MATERIALSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjectPyrolytic charcoalen_US
dc.subjectWalnut shellen_US
dc.subjectHexavalent chromiumen_US
dc.titleRemoval of Cr (VI) from aqueous solution by pyrolytic charcoalsen_US
dc.typeArticleen_US

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