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Kinetics and Equilibrium Studies on Adsorption of Dimethylformamide by Macroporous Chitosan Membranes

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Abstract:

The adsorption of dimethylformamide (DMF) by macroporous chitosan membranes using silica gel as porogen is studied. The morphology, porosity and DMF adsorption capacity of the macroporous chitosan membrane were measured. SEM photographs show the pores in the membrane dispersed uniformly. DMF adsorption capacity of the macroporous chitosan membranes reached 145 mg/g. Adsorption isotherm of DMF on the macroporous chitosan membranes was determined and correlated with Langmuir and Freundlich equations. The adsorption equilibrium data fitted well with Freundlich equation. The adsorption kinetics was found to follow the pseudo second-order kinetic model.

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Periodical:

Advanced Materials Research (Volumes 233-235)

Pages:

1141-1145

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.233-235.1141

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Online since:

May 2011

Authors:

Si Fang Li, Qiang Chen, Miao Liu

Keywords:

Adsorption, Dimethylformamide, Macroporous Chitosan Membrane, Silica Gel

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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