JSEMAT  Vol.1 No.2 , July 2011
Modeling of Adsorption of Bi(III) from Nitrate Medium by Impregnated Resin D2EHPA/XAD-1180
ABSTRACT
Di(2-ethylhexyl)phosphoric acid (D2EHPA) in acetone was supported on the Amberlite XAD-1180 polystyrene divinylbenzene copolymer resin. The use of XAD-1180 impregnated with D2EHPA for the extraction of bismuth(III) from nitrate medium was carried out using batch technique. Various parameters affecting the uptake of this metal ion were described in the previous paper (Belkhouche and Didi, 2010) and the capacity of the impregnated resin for bismuth(III) was found to be 490.7 mg/g of resin. Effect of temperature on the values of distribution equilibrium was studied to evaluate the changes in standard thermodynamic quantities. A comparison of Langmuir forms I, II and Freundlich sorption isotherms was realized and the kinetic models applied to the adsorption rate data were evaluated for Lagergren first order, the pseudo second order and Morris–Weber models. From the results, the adsorption of Bi(III) onto D2EHPA/XAD-1180 resin shown the exothermic character and followed the Langmuir form II isotherm. Thus, the capacity of monolayer adsorption of Bi(III) was equal to 769.23 mg/g of resin. Both the Lagergren pseudo first order and film-diffusion models were found to best describe the experimental rate data.

Cite this paper
nullN. Belkhouche and N. Benyahia, "Modeling of Adsorption of Bi(III) from Nitrate Medium by Impregnated Resin D2EHPA/XAD-1180," Journal of Surface Engineered Materials and Advanced Technology, Vol. 1 No. 2, 2011, pp. 30-34. doi: 10.4236/jsemat.2011.12005.
References
[1]   N. Belkhouche and M. A. Didi, “Extraction of Bi(III) from Nitrate Medium by D2EHPA Impregnated onto Amberlite XAD-1180,” Hydrometallurgy, Vol. 103, No. 1-4, 2010, pp. 60-67. doi:10.1016/j.hydromet.2010.02.015

[2]   C. H. Weng and C. P. Huang, “Adsorption Characteristics of Zn(II) for Dilute Aqueous Solution by Fly Ash,” Colloids and Surface. A: Physicochemical Engineering Aspects, Vol. 247, No. 1-3, 2004, pp. 137-143. doi:10.1016/j.colsurfa.2004.08.050

[3]   E. A. El-Sofany, “Removal of Lanthanum and Gadolinium from Nitrate Medium Using Aliquat-336 Impregnated onto Amberlite XAD-4,” Journal of Hazardous Materials, Vol. 153, No. 3, 2008, pp. 948-954. doi:10.1016/j.jhazmat.2007.09.046

[4]   K. J. Laidler, “Chemical Kinetics,” Mc-Graw Hill, London, 1975, pp. 11.

[5]   A. M. El-Kamash, N. S. Awad and A. A. El-Sayed, “Sorption of Uranium and Thorium Ions from Nitric Acid Solution Using HDEHP-Impregnated Activated Carbon,” Arab Journal of Nuclear Sciences and Applications, Vol. 38, No. 1, 2005, pp. 44-49

[6]   Y. S. Ho and G. McKay, “Pseudo-Second Order Model for Sorption Processes,” Process Biochemical, Vol. 34, No. 5, 1999, pp. 451-465. doi:10.1016/S0032-9592(98)00112-5

[7]   W. J. Weber and J. M. Morris, “Kinetics of Adsorption of Carbon from Solutions,” Journal of Sanitary Engineering Division American Society Engineers, Vol. 89, 1963, pp. 31-60

[8]   N. K. Lazaridis, T. D. Karapantsios and D. Georgantas, “Kinetic Analysis for the Removal of a Reactive Dye from Aqueous Solution onto Hydrotalcite by Adsorption,” Water Research, Vol. 37, No. 12, 2003, pp. 3023-3033. doi:10.1016/S0043-1354(03)00121-0

[9]   M. Alkan, O. Demirbas, S. Alikcapa and M. Dogan, “Sorption of Red 57 from Aqueous Solution onto Sepiolite,” Journal Hazardous Materials, Vol. 116, No. 1-2, 2004, pp. 135-145. doi:10.1016/j.jhazmat.2004.08.003

[10]   F. J. Alguacil, “A Kinetic Study of Cadmium(II) Adsorption on Lewatit TP260 Resin,” Journal of Chemical Research, Vol. 2003, No. 3, 2003, 144-146. doi:10.3184/030823403103173282

[11]   R. Chiarizia, E. P. Horwitz and S. D. Alexandratos, “Uptake of Metal Ions by a New Chelating Ion Exchange Resin. Part 4: Kinetics,” Solvent Extraction and Ion Exchange, Vol. 12, No. 1, 1994, pp. 211-237. doi:10.1080/07366299408918209

 
 
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