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, 4 (3). 248-253. ISSN 1369-703X
|
(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 |
HAL Id: | hal-03579920 |
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 - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Other partners > Université des Sciences et Technologies de Lille - USTL (FRANCE) |
Laboratory name: | |
Statistics: | download |
Deposited On: | 13 Oct 2008 13:04 |
Repository Staff Only: item control page