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Removal of Pb(II) and Cd(II) from aqueous solution using alkaline-modified pumice stone powder (PSP): equilibrium, kinetic, and thermodynamic studies.

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dc.contributor.author Jonasi, Vivian
dc.contributor.author Matina, Kaina
dc.contributor.author Guyo, Upenyu
dc.date.accessioned 2018-12-11T09:47:20Z
dc.date.available 2018-12-11T09:47:20Z
dc.date.issued 2017
dc.identifier.issn 1300-0527
dc.identifier.uri http://journals.tubitak.gov.tr/chem/issues/kim-17-41-5/kim-41-5-11-1701-40.pdf
dc.identifier.uri http://hdl.handle.net/11408/3419
dc.description.abstract Adsorption processes of Cd(II) and Pb(II) from aqueous solutions onto pumice stone powder (PSP) were in-vestigated in batch mode. The inuences of solution pH, contact time, adsorbent dosage, initial metal (M) concentration, and temperature on adsorption process were investigated. The kinetic and isotherm data were analysed using different model equations. The adsorption process was consistent with the Langmuir model for both metal ions with high R2 and low χ2 values for both Pb(II) and Cd(II). The maximum monolayer adsorption capacities were 28.09 and 27.17 mg g-1 for Pb(II) and for Cd(II), respectively. The pseudo-second order kinetic model explained the kinetic data as evidenced by the calculated qe (cal) values (10.42 mg g-1 for Pb(II) and 2.62 mg g-1 for Cd(II)) agreeing with the experimental values (9.24 mg g-1 for Pb(II) and 2.49 mg g-1 for Cd(II)). Consequently, the present study demonstrated that PSP could be utilised in adsorptive removal of Cd(II) and Pb(II) ions from aqueous solutions. en_US
dc.language.iso en en_US
dc.publisher Scientific and Technical Research Council of Turkey en_US
dc.relation.ispartofseries Turkish Journal of Chemistry;Vol. 41, No. 5: p. 748-759
dc.subject Biosorption en_US
dc.subject Pumice stone powder en_US
dc.subject Kinetics en_US
dc.title Removal of Pb(II) and Cd(II) from aqueous solution using alkaline-modified pumice stone powder (PSP): equilibrium, kinetic, and thermodynamic studies. en_US
dc.type Article en_US


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