Estimation of the kinetic parameters based on Fick’s Ⅱ lawfor sorption of methane in coal

摘要

The paper aims to present possibilities of the determination of the diffusion coefficient D as a coefficient De, basing onFick’s II law and some of its simplified and equivalent mathematical forms. The results of theoretical considerations arediscussed on the example of methane sorption on anthracite type of coal, on grains of various size (four granular fractions) inisothermal-isobaric conditions.