Membranes with Nanoparticles for Remediation of Chlorinated Organics

Chitosan Membranes with Nanoparticles for Remediation of Chlorinated Organics 

Department of Chemical and Materials Engineering, University of Kentucky, Lexington, Kentucky 40506-0046 

Various methods have been used for the synthesis and smdies of the chemical and physical properties of the polymeric membrane reactor with embedded nanoparticles. These methods include sonochemical, ultraviolet (UV), and y irradiation, and chemical reduction by reducing agents such as borohydrides and hydrazine. Studies have revealed the successful synthesis of cellulose acetate thin film with embedded bimetallic nanopaiticles such as Ni/Fe, Pd/Co, and monometallic Pd for the catalytic dechlorination and hydrogenation processes (Liu et al., 1997 Liu et al., 2000 Meyer et al., 2004). Catalytically active 

Advanced Membrane Technology and Applications. Edited by Norman N. Li, Anthony G. Fane, W. S. Winston Ho, and T. Matsuura Copyright 2008 John Wiley Sons, Inc. 

The use of chitosan-Pd nanocomposites for heterogeneous catalytic reactions is the most extensively studied system and reported in the literature. For example, aUylic substitution reactions of ( )-cinnamyl ethyl carbonate by morpholine was reported by Quignard et al. (2000) using a chitosan-supported palladium complex. Dechlorination reaction of chlorophenol to phenol, degradation of nitrophenol, and reduction of chromate were studied by Vincent et al. (2002, 2003, 2004). Hydrogenation of nitrobenzene to aniline by chitosan-impregnated palladium composites was also reported by Jin et al. (1994). Excellent review of chitosan-based materials used in the heterogeneous catalytic reactions 

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