Adsorption of Methane on Poly Vinyl Alcohol

Abstract

      The adsorption studies of methane as environmental pollutant gas on PVA surface was discussed as one of the gas-solid application and removed it from the atmosphere .The adsorption ability of the methane gas at temperature rate  20 , 30, 40 and 50 ^o C  was investigated .The results revealed that the relation between the gas concentration versus adsorption capacity obeys Freundlich isotherm .The a & n values were calculated was increases with the decreases of the temperatures ,this referred that the adsorption was physical adsorption .The adsorption isotherms was investigated from the relation between 1/T versus ln x  furthermore  the ∆H values was calculated according to Clauses-Clapeyron equation in these range of temperatures.