关键词: 吸附率;多组分吸附系统;吸附模式;相位传输平衡

Abstract: Three adsorption rate models are derived for multicomponent adsorption systems under either
pore diffusion or surface diffusion control. The linear driving force (LDF) model is
obtained by assuming a parabolic intraparticle concentration profile. Models I and Ⅱ are
obtained from the parabolic concentration layer approximation. Examples are presented to
demonstrate the usage and accuracy of these models. It is shown that Model I is suitable
for batch adsorption calculations and Model Ⅱ provides a good approximation in fixed-bed
adsorption processes while the LDF model should not be used in batch adsorption and may be
considered acceptable in fixed-bed adsorption where the parameter Ti is relatively large.

Key words: adsorption rate, adsorption model, multicomponent adsorption