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Species grouping in multicomponent adsorption calculations
Author(s) -
Calligaris Mary Beth,
Tien Chi
Publication year - 1982
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450600608
Subject(s) - affinities , adsorption , chemical species , global biodiversity , chemistry , chemical physics , ecology , biology , stereochemistry , organic chemistry , habitat
The validity of the assumption of species grouping, which combines several adsorbable species into a fewer number of pseudo‐species in adsorption calculations, was examined by comparing the equilibrium concentrations obtained from exact calculations with those obtained with the use of the assumption. It was found that if the adsorption affinities of the individual species exhibited by their single‐species isotherms are of the same order of magnitude, the use of the species grouping assumption yields acceptable results. This procedure applies to three situations, including those in which (a) all the species are grouped into a single pseudo‐species; (b) the various species are combined into several (but fewer) pseudo‐species; and (c) only some of the species are grouped, while the others remain individual species.