International Journal of Membrane Science and Technology  (Volume 2 Issue 2)
 Supported Liquid Membrane Composed of Tertiary or/and Quaternary Amine for the Extraction of Lactic Acid International Journal of Membrane Science and Technology
Pages 19-28

B.S. Chanukya and Navin K. Rastogi

DOI: http://dx.doi.org/10.15379/2410-1869.2015.02.02.03


Published: 30 November 2015
Abstract
The present work deals with the extraction of lactic acid from aqueous solution, fermentation broth and buttermilk by supported liquid membrane. The mixed amine extractant system of tertiary amine (Tri-octyl-amine) and quaternary amine (AliquatTM 336) in xylene was used in the supported liquid membrane The parameters such as effect of mixed amine extractant system, its ratios and concentration, stirring speed, strip: feed phase volume, and solute permeability as well as extraction efficiencies were calculated. The extraction of lactic acid from fermentation broth using standardised supported liquid membrane conditions showed 17.3% and 31.9% extraction with deionized water and Na2CO3 solution as the strip phase respectively and from buttermilk: 67 and 65.9% extraction with deionized water and Na2CO3 solution as the strip phase, respectively. The present study demonstrates the potential of supported liquid membrane composed of a combination of tertiary amine and quaternary amine as carriers for lactic acid extraction from aqueous and real systems.
Keywords
 Supported liquid membrane, Mixed amine extractant, Lactic acid extraction, Fermentation broth.
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