Adsorption Equilibrium of H2, Ch4, CO, CO2 and their binary mixtures on Activated Carbon

Adsorption Equilibrium of H2, Ch4, CO, CO2 and their binary mixtures on Activated Carbon
Adsorption Equilibrium; Activated Carbon; Hydrogen, CO, Methane; Binary Mixtures
Issue Date
7th International Symposium : Surface Heterogeneity Effects in Adsorption and Catalysis on Solids
, 187
Activated carbon is widely used in adsorption separation processes as a result of its attractive adsorption properties. There are large amounts of data published for the adsorption isotherms of pure and multicomponent gases in activated carbon. In general, pure-gas adsorption isotherm data are large because easy and straightforward to measure experimentally with a high accuracy. However, Multicomponent adsorption equilibrium data are scarce because much more time consuming and expensive to obtain. Multicomponent adsorption equilibrium is a key factor in the design and operation of industrial processes based on the equilibrium separation such as pressure swing adsorption (PSA) and temperature swing adsorption (TSA) process. In this study, the adsorption of pure hydrogen, methane, carbon monoxide, and carbon dioxide in activated carbon has been measured at temperatures between 293 and 313 K and at pressures up to 20 bar by the static volumetric method. The same apparatus was used to measure the adsorption of binary mixtures. The results are compared with four predictive models: extended Langmuir (EL), extended Langmuir-Freundlich (ELF), dual-site Langmuir (DSL), and Flory/Huggins forms of the vacancy solution model (FH-VSM).
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