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

Paper ID Volume ID Publish Year Pages File Format Full-Text
4333 221 2008 6 PDF Available
Title
Liquid membrane extraction of bio-active amphiphilic substances: Recovery of surfactin
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 efficiency was 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 from both 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.

Keywords
Surfactin; Extraction; Liquid membranes; Biosurfactants; Pertraction; Process integration
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Liquid membrane extraction of bio-active amphiphilic substances: Recovery of surfactin
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 42, Issue 3, 1 December 2008, Pages 248–253
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Any Questions? feel free to contact us