Flow through Porous Media: Part X-Permeability Studies of Ethylene Glycol, Diethylene Glycol & Their Aqueous Mixtures through Titanium Oxide Membrane

Abstract

The flow of water, ethylene glycol, diethylene glycol and their aqueous mixtures through a titanium oxide plug has been measured at different temperatures. The results are discussed in terms of' frictional coefficient, which measures the interaction between water and the walls of the membrane. The results are further interpreted in terms of a unit rate process. The values of enthalpy of activation (<img src='http://www.niscair.res.in/jinfo/delta.gif' border=0><em>H</em>^*)<em>, </em>entropy of activation (<img src='http://www.niscair.res.in/jinfo/delta.gif' border=0><em>S</em>^*) and free energy of activation (<img src='http://www.niscair.res.in/jinfo/delta.gif' border=0><em>G</em>^*) are determined. The molecular exchange rate <em>K</em>_&beta;ɑ between the two phases ɑ and &beta; across the membrane has been reported.