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Recovery of volatile organic compounds condensed out of waste gas‐streams by selected high boiling point extractants
Author(s) -
Scott J. A.,
Daugulis A. J.,
Trotin M.,
Acosta F.,
Shepherd S. H.,
AlMahmoud A.
Publication year - 1996
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199612)67:4<397::aid-jctb588>3.0.co;2-d
Subject(s) - fusel alcohol , boiling point , chemistry , chromatography , aroma , extraction (chemistry) , solvent , organic chemistry , fermentation , food science
Abstract Recovery of volatile organic compounds (VOCs) condensed‐out of waste gas streams has been carried out using re‐cyclable high boiling point extractants (HBEs). HBEs were selected using an extractant screening program (ESP) which calculated multi‐component liquid–liquid equilibria and then generated a ranking of extractants in terms of either mass partition coefficient or selectivity. Investigated was recovery from condensed VOC/water mixtures of firstly 1‐butanol, a solvent used in protective coatings and secondly, alcohols and esters (fusel oils) carried over in the off‐gas (CO 2 ) of alcoholic beverage fermentations. The latter are of particular interest, as they are a potential source of natural flavour and aroma compounds. With the most efficient HBE, VOC recovery in single‐stage extraction was in excess of 90% for 1‐butanol and 100% for the fusel oils.