abstract
The isobaric vapor-liquid equilibria of the binary 1-propanol + water, 2-propanol + water, and 2-methyl-2-propanol (tert-butanol) + water systems were predicted using the conductor-like screening model for realistic solvation (COSMO-RS) method. The phase behavior of the 1-propano1/2-propanol/tert-butanol water + piperazine-based Good's buffer systems were predicted. The effect of piperazine-containing Good's buffers, 2-[4-(2-hydroxyethyl)piperazin-1-yl]alkanesulfonic acid, as mass-separating agents on the separation of proponals from water were discussed. The influence of alkyl chain length between the zwitterion end groups, R = methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl, nonyl, and decyl was evaluated. Further, the effect of 4-(2-hydroxyethyl)piperazine-1-(2-hydroxypropane sulfonic acid) was also evaluated. Piperazine-based Good's buffers are expected to be effective mass separating agents to have practical application in the separation of propanol from water. (C) 2016 Elsevier B.V. All rights reserved.
keywords
VAPOR-LIQUID-EQUILIBRIUM; INDUCED PHASE-SEPARATION; IONIC LIQUIDS; PLUS WATER; AQUEOUS 1,4-DIOXANE; CALCIUM-CHLORIDE; SALT SYSTEMS; EPPS BUFFER; 298.15 K; PREDICTION
subject category
Thermodynamics; Chemistry; Engineering
authors
Taha, M
our authors
Mohamed Taha Ahmed Amin
Post-doc FellowshipGroups
acknowledgements
M. Taha acknowledges Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) for the postdoctoral grants SFRH/BPD/78441/2011.