Adsorption of Strontium (II) on new ion-imprinted solid-phase support: determination, isotherms, thermodynamic and kinetic studies

Authors

1 1*, , 2, 1,3, H. Ahmad Panahi 3

2 H. Sid Kalal 1*, N. Pakizevand1, H. Hoveidi 2, M. Taghiof 1,S. Tavangari 3, H. Ahmad Panahi 3

3 H. Sid Kalal 1*, N. Pakizevand1, H. Hoveidi 2, M. Taghiof 1,S. Tavangari 3, 3

Abstract

An ion imprinted polymer (IIP) based on aniline-formaldehyde was synthesized and then modified with extra aniline as cross-linker in the presence and absence of Sr (II) as the template to produce ion imprinted poly(aniline-formaldehyde) (IIPAF) and non imprinted poly(aniline-formaldehyde) (NIPAF). The sorbent was characterized by Fourier Transform Infrared Spectroscopy and was used for solid phase extraction. The kinetics of the sorption was analyzed using the pseudo-first order and pseudo-second order kinetic models. The equilibrium adsorption data of Sr (II) on synthetic polymer were analyzed by Langmuir, Freundlich, Temkin and Redlich-Peterson models. The thermodynamic parameters were determined using the equilibrium constant values obtained at different temperatures. The results showed the negative values of ?G? and positive ?H? which indicated that the Sr (II) adsorption process is spontaneous and endothermic. The method was applied for strontium ions determination from Tap water samples.

Keywords


Abe, M. Ohtani, A. Umemoto, Y. Akizuki, S. M. Higuchi, H. Nakamoto, K. Okuno, A. and Noda, Y., (1989),Soluble and high molecular weight polyaniline. Journal of the Chemical Society, Chemical. 2: 1736-1738

 

Abdel Ghani N.T. and Elchaghaby, G.A., (2007). Influence of operating conditions on the removal of Cu, Zn, Cd and Pb ion from wastewater by adsorption. International Journal of Environmental Science and Technology. 4(4): 451-456

 

Booking , E. C., (2007),Trends in hazardous materials research, Nova Science Publishers, New York, Freundlich, H.M.A., (1906), Concerning adsorption in solutions. Journal of Physical Chemistry. 57: 385-470

 

Hall, K.L. Eagleton, L.C. Acrivos, A. and Vermeulen,T., (1966),Pore and solid-diffusion kinetics in fixed bed adsorption under constant pattern conditions. Industrial & Engineering Chemistry Fundamentals. 5: 212-223

 

Ho, Y.S., and Ofomaja, A.E., (2006). Biosorption thermodynamics of cadmium on coconut copra meal as biosorbent. Biochemical Engineering Journal. 30: 117–123.

 

Horsfall, M.; Spiff, A.I. and Abia, A.A. (2004). Studies on the influence of mercaptoacetic acid (MAA) modification of cassava (Manihot sculenta cranz) waste Biomass on the adsorption of Cu2+ and Cd2+ from aqueous solution. Bulletin of Korean Chemical Society. 25(7): 969-976.

Kumar ,A., Ray ,P. M. ,Chakraborty, S., (2007). Hexavalent chromium removal from wastewater using aniline formaldehyde condensate coated silica gel. Journal of Hazardous Materials.143:24 -32

Langmuir, L., (1918),The adsorption of gases on plane surfaces of glass mica and platinum. Journal of the American Chemical Society. 40: 1361-1403

Liu, G. and Freund, M. S., (1997),New Approach for the Controlled Cross-Linking of Polyaniline: Synthesis and Characterization. Macromolecules. 30: 5660-5665