OATAO - Open Archive Toulouse Archive Ouverte Open Access Week

Liquid membrane extraction of bio-active amphiphilic substances: Recovery of surfactin

Dimitrov, Krasimir and Gancel, Frédérique and Montastruc, Ludovic and Nikov, Iordan Liquid membrane extraction of bio-active amphiphilic substances: Recovery of surfactin. (2008) Biochemical Engineering Journal, vol. 4 (n° 3). pp. 248-253. ISSN 1369-703X

[img]
Preview
(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
388kB

Official URL: http://dx.doi.org/10.1016/j.bej.2008.07.005

Abstract

The interest of application of liquid membrane (pertraction) processes for recovery of biosurfactants from aqueous media was demonstrated. Transport of pure surfactin in three-liquid-phase system was studied. Surfactin was successfully extracted from slightly acid media (pH 5.65–6.05) applying batch pertraction in a rotating discs contactor and using n-heptane as liquid membrane. The process efficiencywas found to be strongly affected by the feed solution acidity (83% at pHF 6.05 and 97% at pHF 5.65 after 4 h pertraction). An atypical pH effect was observed when the behaviour of surfactin extraction from aqueous media by non-polar solvents (n-heptane and n-octane)was studied. The obtained high extraction degrees fromboth acid and basic media and the clearly reduced degree of extraction from neutral media could be attributed to the different conformations of surfactin in these media.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Biochemical Engineering Journal website : http://www.sciencedirect.com/science/journal/1369703X
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Other partners > Bulgarian Academy of Sciences (BULGARIA)
Other partners > Polytech'Lille (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université des Sciences et Technologies de Lille - USTL (FRANCE)
Laboratory name:
Statistics:download
Deposited By: Hélène Dubernard
Deposited On:13 Oct 2008 13:04

Repository Staff Only: item control page