Supercritical fluid extraction of 1-butanol from aqueous solutions

Antero Laitinen (Corresponding Author), Juha Kaunisto

Research output: Contribution to journalArticleScientificpeer-review

24 Citations (Scopus)

Abstract

The purpose of the present work was to study the extraction of 1-butanol from aqueous solutions using supercritical carbon dioxide at 100 bar and 40°C as a solvent. Experimental studies were performed using a 35 mm diameter mechanically agitated Oldshue–Rushton-type supercritical fluid extraction column. Over 99.7% of the initial amount of 1-butanol was removed from the feed stream when the solvent-to-feed ratio was 2.7. The lowest 1-butanol concentration in the raffinate was approximately 0.02 wt%, and the extract contained typically 85–90 wt% 1-butanol. The values of the overall mass transfer coefficient Koda were in the range 0.0019–0.0034 s−1, and the values of the height equivalent to a theoretical stage HETS ranged from 0.4 to 0.5 m. Mechanical agitation had no effect on the column efficiency at the selected extraction conditions.
Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalJournal of Supercritical Fluids
Volume15
Issue number3
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

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Supercritical fluid extraction
1-Butanol
supercritical fluids
Butenes
aqueous solutions
agitation
mass transfer
Supercritical fluids
carbon dioxide
Carbon Dioxide
Carbon dioxide
Mass transfer
coefficients

Cite this

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title = "Supercritical fluid extraction of 1-butanol from aqueous solutions",
abstract = "The purpose of the present work was to study the extraction of 1-butanol from aqueous solutions using supercritical carbon dioxide at 100 bar and 40°C as a solvent. Experimental studies were performed using a 35 mm diameter mechanically agitated Oldshue–Rushton-type supercritical fluid extraction column. Over 99.7{\%} of the initial amount of 1-butanol was removed from the feed stream when the solvent-to-feed ratio was 2.7. The lowest 1-butanol concentration in the raffinate was approximately 0.02 wt{\%}, and the extract contained typically 85–90 wt{\%} 1-butanol. The values of the overall mass transfer coefficient Koda were in the range 0.0019–0.0034 s−1, and the values of the height equivalent to a theoretical stage HETS ranged from 0.4 to 0.5 m. Mechanical agitation had no effect on the column efficiency at the selected extraction conditions.",
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Supercritical fluid extraction of 1-butanol from aqueous solutions. / Laitinen, Antero (Corresponding Author); Kaunisto, Juha.

In: Journal of Supercritical Fluids, Vol. 15, No. 3, 1999, p. 245-252.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Supercritical fluid extraction of 1-butanol from aqueous solutions

AU - Laitinen, Antero

AU - Kaunisto, Juha

PY - 1999

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AB - The purpose of the present work was to study the extraction of 1-butanol from aqueous solutions using supercritical carbon dioxide at 100 bar and 40°C as a solvent. Experimental studies were performed using a 35 mm diameter mechanically agitated Oldshue–Rushton-type supercritical fluid extraction column. Over 99.7% of the initial amount of 1-butanol was removed from the feed stream when the solvent-to-feed ratio was 2.7. The lowest 1-butanol concentration in the raffinate was approximately 0.02 wt%, and the extract contained typically 85–90 wt% 1-butanol. The values of the overall mass transfer coefficient Koda were in the range 0.0019–0.0034 s−1, and the values of the height equivalent to a theoretical stage HETS ranged from 0.4 to 0.5 m. Mechanical agitation had no effect on the column efficiency at the selected extraction conditions.

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DO - 10.1016/S0896-8446(99)00011-X

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