Retention studies of chromium (VI) from aqueous solution on the surface of a novel carbonaceous material

dc.creatorHussain, S
dc.creatorGul, S
dc.creatorKhan, S
dc.creatorRehman, HU
dc.date2013
dc.dateNOV
dc.date2014-07-30T18:27:09Z
dc.date2015-11-26T16:53:10Z
dc.date2014-07-30T18:27:09Z
dc.date2015-11-26T16:53:10Z
dc.date.accessioned2018-03-28T23:40:14Z
dc.date.available2018-03-28T23:40:14Z
dc.identifierArabian Journal Of Geosciences. Springer Heidelberg, v. 6, n. 11, n. 4547, n. 4556, 2013.
dc.identifier1866-7511
dc.identifier1866-7538
dc.identifierWOS:000325774500039
dc.identifier10.1007/s12517-012-0745-9
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/71085
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/71085
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1276500
dc.descriptionIn the present study, the retention capacity of carbonaceous material obtained from the diesel engine exhaust mufflers for Cr(VI) removal has been investigated. The physicochemical properties such as density, pH of aqueous slurry, pH at point of zero charge, ash content, moisture content, volatile matter, surface area, scanning electron microscopy and electron dispersive spectroscopy of the carbonaceous material were determined. The capacity of adsorbent for removal of Cr(VI) from aqueous solution was observed under different experimental condition like contact time, initial concentration of metal ions, pH and temperatures on the adsorption capacity of the adsorbent. Maximum adsorption of Cr(VI) ions was found at low pH. The adsorption process was found to follow second-order kinetics. The rate constant was evaluated at different temperatures along with other thermodynamic parameters like activation energy, Gibbs free energy change, enthalpy change and entropy change. Both Langmuir and Freundlich isotherms were used to describe the adsorption equilibrium of carbonaceous material at different temperatures. Langmuir isotherm shows better fit than Freundlich isotherm at given conditions. The result shows that low-cost carbonaceous material from diesel engine exhaust mufflers can be efficiently used for wastewater treatment containing Cr(VI) ions.
dc.description6
dc.description11
dc.description4547
dc.description4556
dc.languageen
dc.publisherSpringer Heidelberg
dc.publisherHeidelberg
dc.publisherAlemanha
dc.relationArabian Journal Of Geosciences
dc.relationArab. J. Geosci.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjectCarbonaceous material
dc.subjectChromium
dc.subjectAdsorption
dc.subjectKinetics
dc.subjectThermodynamic
dc.subjectHexavalent Chromium
dc.subjectWaste-water
dc.subjectAdsorption-kinetics
dc.subjectActivated Carbon
dc.subjectFly-ash
dc.subjectRemoval
dc.subjectCr(vi)
dc.subjectAdsorbents
dc.subjectEquilibrium
dc.subjectReduction
dc.titleRetention studies of chromium (VI) from aqueous solution on the surface of a novel carbonaceous material
dc.typeArtículos de revistas


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