Dynamic adsorption, in active carbon beds, of vapour mixtures corresponding to miscible and immiscible liquids

It is shown that the combined Myers-Prausnitz-Dubinin theory (MPD) can be e xtended to the adsorption of ternary mixtures from an air stream. When comb ined with a computer model developed for dynamic adsorption, it provides a satisfactory agreement with the experimental breakthrough curves in active carbon beds. On the other hand, as illustrated by a mixture of water and 2- chloropropane vapours, MPD is no longer valid when the corresponding liquid s are not miscible. In this case, binary adsorption can be described with a relatively good precision by assuming independent co-adsorption of the vap ours. This, in turn, leads to satisfactory previsions for dynamic adsorptio n. (C) 1999 Elsevier Science Ltd. All rights reserved.