In this paper

the adsorption of alkane-alcohol binary non-aqueous solutions on DOO1 and TS-TR resins is investigated.Local adsorption isotherms (20?℃) from binary liquid mixture consisting of butanol-heptane

ethanol-hexane on two kinds of resins with a fixed moisture content are measured respectively.Based on NBP-a model

an isotherm adsorption model was developed

and energy distribution density function is developed with Stieltjes transform.Results show that surface energy heterogeneity of adsorbent and nonideality of solution play an important role in the adsorption.Moisture content in resin also affects on its surface energy heterogeneity.The surfac energy heterogeneity of polar DOO1 resin increased with moisture content

and the surface energy heterogeneity of non-polar TS-TR resin also changes significantly with moisture content.Calculated results with the adsorption model agree with the results of experiments.