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Condensable Gas Separation using Phenol! Alumina Composite Activated Carbon Hollow Fiber Membranes  

Shin, Kyung-Yong (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Park, You-In (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Kim, Beom-Sik (Environment & Resources Research Center, Korea Research Institute of Chemical Technology)
Koo, Kee-Kahb (Dept. of Chemical & Biomolecular Engineering, Sogang University)
Publication Information
Membrane Journal / v.20, no.4, 2010 , pp. 312-319 More about this Journal
Abstract
Carbon membrane materials have received considerable attention for the gas separation including hydrocarbon mixture of ingredients of the volatile organic compounds(VOCs) because they possess their higher selectivity, permeability, and thermal stability than the polymeric membranes. The use of activated carbon membranes makes it possible to separate continuously the VOCs mixture by the selective adsorption-diffusion mechanism which the condensable components are preferentially adsorbed in to the micropores of the membrane. The activated carbon hollow fiber membranes with uniform adsorptive micropores on the wall of open pores and the surface of the membranes have been fabricated by the carbonization of a thin film of phenolic resin deposited on porous alumina hollow fiber membrane. Oxidation, carbonization, and activation processing variables were controlled under different conditions in order to improve the separation characteristics of the activated carbon membrane. Properties of activated carbon hollow fiber membranes and the characterization of a gas permeation by pyrolysis conditions were studied. As the result, the activated carbon hollow fiber membranes with good separation capabilities by the molecular size mechanism as well as selective adsorption on the pores surface followed by surface diffusion effective in the recovery hydrocarbons have been obtained. Therefore, these activated carbon membranes prepared in this study are shown as promising candidate membrane for separation of VOCs.
Keywords
hydrocarbon; VQCs; activated carbon hollow fiber membrane;
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