Adsorption of Lead Ions onto Cattle Bone

Please use this identifier to cite or link to this item: http://repository.unizik.edu.ng/handle/123456789/1119

Title:	Adsorption of Lead Ions onto Cattle Bone
Authors:	Egwuatu, C. I. Obumselu, O. F. Anarado, C. J. O. Umedum, N. L.
Keywords:	lead ion Adsorption Isotherm Kinetic studies Thermodynamics
Issue Date:	2014
Publisher:	J. Int. Environmental Application & Science
Citation:	J. Int. Environmental Application & Science, Vol. 9(2): 194-204
Abstract:	The sorption kinetics, thermodynamics and isotherms of lead adsorption on cattle bone were investigated. FTIR analysis revealed the presence of functional groups like OH-, CONH, PO43-, CO32- that were capable of adsorbing Pb2+. Results showed that the pseudo-second order kinetic model with R2 best described the kinetics, and qtheoritical values of 0.9999 and 0.96955 mg/g. Equilibrium data were well described by both Freundlich and Langmuir isotherms with R2 values of 0.9975 and 0.9967. Maximum sorption capacity qmax obtained was 1.9573mg/g. Optimum sorption was observed at pH 4. Thermodynamics parameters obtained were ∆H (91.237kJ/mol), ∆S (-0.293kJ/mol/K). ∆G values were positive, increasing with increase in temperature.
Description:	scholarly work
URI:	http://repository.unizik.edu.ng/handle/123456789/1119
Appears in Collections:	Scholarly Works

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