Characterization of hard coal properties applying multiple sorption model with parameters determined from qualitative approach to adsorption mechanism identification

Abstract

This paper presents results of research on modeling of a coal structure and sorption system properties. Investigations combine a viewpoint on surface heterogeneity, coming from approach aimed at adsorption mechanism identification, when applied to real coal structure in multiple sorption model (MSM) simulations. For imaging of surface heterogeneity in real coal structure two hypothetical models are considered, corresponding to a structure of graphite and active carbon. In particular, adsorbate cohesion energy and volume in adsorption system are estimated modeling selected surface heterogeneity, and employed for determination of corresponding MSM parameters. The newly elaborated MSM simulation procedure is shown and discussed, and the results of its application for analysis of real hard coals properties are shown.