Ifeyinwa Orakwe
The Robert Gordon University
U.K
Title: Effect of temperature on gas transfer through alumina membrane
Biography
Biography: Ifeyinwa Orakwe
Abstract
Membrane utilization in various field processing applicationsis a dynamic and rapidly growing field. In this study, a composite membrane consisting of a porous γ –alumina support layer was used.The membrane and support measured 7mm internal diameter and 10mm outer diameter respectively. This work discusses results obtained fromthe permeability test of some single gases carried out at high temperature. The flowrates at gauge pressurebetween 0.1-1 Bar and temperature 298K were obtained andgraphs of flowrate were plotted against pressure.The single gases used were oxygen (O2), helium (He), nitrogen (N2) and carbon dioxide (CO2).Results obtained from the plots showed an order in the rate of flow of the gases through the membrane. At 298K and 323K, for example, the flow rate increased in the order He>O2>N2>CO2. As the temperature was increased to 373K, 423K and 473K, the order of increase in flow rate was then He>N2>O2>CO2.The influence of a number of factors, for instance kinetic diameter and molecular weight of the gases will be discussed in respect to their permeation rate. The overall results illustrated an initial viscous flow mechanism, then Knudsen transport mechanismas pressure was increased.
