A MODEL FOR THE PREDICTION OF THE ADSORPTION EQUILIBRIA OF ARBITRARY ORGANIC VAPORS ON ACTIVE-CARBON

From the basis of well-known molecular interaction potential equations , a model has been developed for calculating the micropore-size distri bution of carbonaceous adsorbents from sub-critical adsorption equilib ria of organic vapours. Only one simple iteration process and readily accessible physical properties are required for the calculation proced ure. It is demonstrated that the resulting pore-size distributions com puted from the characteristic curves of various sorbates agree well fo r a fixed sorbent. Thus, the model also allows the reliable prediction of the sub-critical adsorption equilibria of arbitrary organic vapour s knowing the reference isotherm of another sorbate on the sorbent of interest. Even molecular sieve effects are reproduced; however, the as sumption of spherical molecules only allows qualitative statements in respect of such effects.