Removal of Cu(II) and Ni(II) from aqueous solution by lignite-based humic acids

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dc.contributor.authorArslan, G.
dc.contributor.authorCetin, S.
dc.contributor.authorPehlivan, E.
dc.date.accessioned2020-03-26T17:18:05Z
dc.date.available2020-03-26T17:18:05Z
dc.date.issued2007
dc.departmentSelçuk Üniversitesien_US
dc.description.abstractThe removals of Cu(II) and Ni(II) metal ions from an aqueous solution were investigated by using humic acids (HAs) in a batch arrangement. HAs were prepared by using alkaline extraction, following sedimentation and acidic precipitation from three Turkish lignites: Ilgin, Beysehir, and Ermenek. The interactions of Cu(II) and Ni(II) with solid HAs and influence of three parameters (initial metal concentration, solution pH and temperature) on the removal of metals were studied. Adsorption equilibrium was achieved in about 120 min for Cu(II) and Ni(II) ions. The sorption of Cu( II) and Ni(II) on the surface of HAs depended strongly on the pH, and increased with increasing of pH and the initial concentration of metal. The sorption of Cu(II) was higher than that of Ni(II) for HAs. The equilibrium relationship between adsorbent and adsorbate is described by adsorption isotherms at a fixed temperature 35 degrees C, at pH similar to 4.0. The Langmuir adsorption isotherm was used to describe observed sorption phenomena. It was observed that the maximum adsorption capacity of Cu(II)/g was 0.27 mmol for Ilgin (HA(1)) and Beysehir (HA(2)), 0.19 mmol for Ermenek (HA(3)) and that of Ni(II)/g was 0.28 mmol for HA(1), 0.24 mmol for HA(2), 0.18 mmol for HA(3) at pH 4.1, respectively. More than 80% of Cu(II) was removed by HA(1) and HA(2) and 58% by HA(3), 82% of Ni( II) was removed by HA(1), 71% by HA(2) and 52% by HA(3) from aqueous solution. The adsorption of Cu( II) and Ni( II) was higher between pH 4.1 and 5.1 for all HAs, and maximum sorption was observed at pH 4.1. The increase in temperature caused a slight decrease in the value of the equilibrium constant (Kc) for the sorption of metal ions. Adsorption isotherms and kinetics data of Cu( II) and Ni( II) ions removed by HAs are presented and discussed.en_US
dc.identifier.doi10.1080/009083190957711en_US
dc.identifier.endpage630en_US
dc.identifier.issn1556-7036en_US
dc.identifier.issue7en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.startpage619en_US
dc.identifier.urihttps://dx.doi.org/10.1080/009083190957711
dc.identifier.urihttps://hdl.handle.net/20.500.12395/21580
dc.identifier.volume29en_US
dc.identifier.wosWOS:000246113500004en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherTAYLOR & FRANCIS INCen_US
dc.relation.ispartofENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.selcuk20240510_oaigen_US
dc.subjecthumic aciden_US
dc.subjectmetal removalen_US
dc.subjectsorptionen_US
dc.subjectTurkish ligniteen_US
dc.titleRemoval of Cu(II) and Ni(II) from aqueous solution by lignite-based humic acidsen_US
dc.typeArticleen_US

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