No abstract

Adsorption studies of 1,1,1-trichloroethane and tetrachloroethylene on silica gel were carried out at 288, 293, and 298 K. Experimental data provided type I Isotherms and were correlated by the Langmuir equation, the model of Hines et al., and the vacancy solution model developed on the basis of the Flory-Huggins activity coefficient model. The absolute errors between the values calculated by these models and the experimental data were below 5 %. The surface area occupied by each adsorbate was calculated by using the BET equation.