Linear algebraic solution for multicomponent adsorption on porous media

Journal Article · Mon Mar 01 00:00:00 EST 1993 · AIChE Journal (American Institute of Chemical Engineers); (United States)

DOI:https://doi.org/10.1002/aic.690390315· OSTI ID:6403615

Gilbert, S W ^[1]

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1. Exxon Research and Engineering Co., Florham Park, NJ (United States)

Adsorption has been used for many years to separate liquid mixtures. For process development and design, it would be useful to have an equilibrium, multicomponent model based on pure-component properties and surface excess data that is directly soluble. A thermodynamic monolayer model that incorporates nonidealities in the bulk liquid and the adsorbed phase is that of Minka and Myers. Analytical solutions of the model equations relating selectivities to multicomponent surface excess data and pure-component capacities have been obtained for two and three component mixtures, and a numerical solution has been given for k components. This work describes an exact solution for the same monolayer mode for k components. One experimental point for a multicomponent system yields the composition of the adsorbed phase and component loadings at that point, but not at other points. The solution is not predictive and cannot be used for interpolation or extrapolation. However, if multicomponent surface excess and pure-component capacity data are available, selectivities and component loadings can be calculated directly. Adsorbents can be evaluated using equilibrium data and the solution formulae. The exact solution is simple to use and is therefore an improvement over the existing numerical method.

• OSTI ID: 6403615
• Journal Information: AIChE Journal (American Institute of Chemical Engineers); (United States), Vol. 39:3; ISSN 0001-1541
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
POROUS MATERIALS
THERMODYNAMIC MODEL
ADSORBENTS
ADSORPTION
EQUILIBRIUM
LIQUIDS
MIXTURES
NUMERICAL SOLUTION
SEPARATION PROCESSES
DISPERSIONS
FLUIDS
MATERIALS
MATHEMATICAL MODELS
PARTICLE MODELS
SORPTION
STATISTICAL MODELS
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes