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Title: Removal of chromium ions from aqueous solution by biosorption on to ternary biopolymeric microspheres
Authors: Bajpai, A K
Rai, Leena
Keywords: Chromium removal;Biosorption;Ternary biopolymer microspheres;Chitosan;Yeast;Gelatin
Issue Date: Jan-2010
Publisher: CSIR
Abstract: Ternary biopolymeric microspherers of chitosan, yeast and gelatin were prepared and characterized by FTIR spectral analysis, particle size measurements and scanning electron micrograph techniques. Static and dynamic adsorption studies of chromium ions were performed onto the surface of the prepared microspheres at fixed pH and ionic strength of the aqueous solution. The adsorption data were supplied to Langmuir and Freundlich isotherm equations and various static parameters were calculated. The dynamic nature of the adsorption was quantified in terms of several kinetic constants such as rate constants for adsorption, Lagregreen rate constant, and interparticle diffusion rate constant and pore diffusion coefficient. The influence of various parameters such as solid to liquid ratio, pH, temperature, and chemical composition of biopolymeric microspheres were investigated on the adsorption of dichromate ion. Various thermodynamic parameters were also calculated.
Page(s): 17-27
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.17(1) [January 2010]

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