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Enhancement of phase separation by the addition of de-emulsifiers to three-phase (diesel oil/biocatalyst/aqueous phase) emulsion in diesel biodesulfurization

Title
Enhancement of phase separation by the addition of de-emulsifiers to three-phase (diesel oil/biocatalyst/aqueous phase) emulsion in diesel biodesulfurization
Authors
Ok K.C.Kyung S.C.Hee W.R.Yong K.C.
Ewha Authors
조경숙
SCOPUS Author ID
조경숙scopus
Issue Date
2003
Journal Title
Biotechnology Letters
ISSN
0141-5492JCR Link
Citation
vol. 25, no. 1, pp. 73 - 77
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Ethanol, added as a de-emulsifier to separate oil and biocatalyst (or bacterial cells) from a three-phase (oil/biocatalyst/aqueous phase) emulsion, formed in diesel biodesulfurization employing Gordonia nitida, improved oil recovery by centrifugation from about 50% in its absence to almost 100% at 3% (v/v). The biocatalyst recovered with ethanol addition showed similar specific growth rates (0.03 h-1) and dibenzothiophene desulfurization rates (6-7.2 mol 1-1 h-1) to those (0.03 h-1 and 7.1 mol 1-1, respectively) of the biocatalyst recovered with no ethanol addition. The desulfurization activity significantly increased as the number of the repeated recovery and reuse of the biocatalyst.
DOI
10.1023/A:1021750719337
Appears in Collections:
엘텍공과대학 > 환경공학전공 > Journal papers
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