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Supercritical CO 2 Extraction of 1‐Butanol and Acetone from Aqueous Solutions Using a Hollow‐Fiber Membrane Contactor
Author(s) -
Moreno Teresa,
Tallon Stephen J.,
Catchpole Owen J.
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300700
Subject(s) - contactor , mass transfer , acetone , hollow fiber membrane , butanol , supercritical fluid , aqueous solution , mass transfer coefficient , chemistry , chromatography , extraction (chemistry) , solvent , membrane , shell (structure) , fiber , supercritical fluid extraction , analytical chemistry (journal) , materials science , ethanol , thermodynamics , organic chemistry , composite material , power (physics) , physics , biochemistry
Porocritical extraction was applied to the separation of 1‐butanol and acetone from aqueous solutions modeling a typical acetone‐butanol‐ethanol (ABE) fermentation broth. The efficiency of two lab‐scale hollow‐fiber membrane contactors of different was studied under various flow rates, solvent‐to‐feed ratios, and pressure conditions. Global and individual, i.e., tube side, membrane, and shell side mass transfer coefficients were determined. The main contribution to mass transfer resistance was found in the shell side in all cases, and experimentally determined shell side mass transfer coefficients were compared to values predicted by existing correlations.