Extraction of propionic acid by emulsion liquid membrane using trioctylamine in toluene

Year 2018, , 1694 - 1698, 01.12.2018

Aynur Manzak

https://doi.org/10.16984/saufenbilder.392118

Cited By: 1

Abstract

The extraction of carboxylic acids by emulsion liquid membranes has also attracted attention in
biotechnology, due to the high selectivity for the desired product, high separation rate and lower costly.
The emulsion type liquid membrane system consists of three phases (water/organic/water) in which the
organic phase acts as a membrane between the aqueous internal phase and the aqueous external phase. The
main parameters such as surfactant concentration, mixing speed, feed phase pH, carrier concentration, and
feed phase concentration were investigated. In the optimum conditions, extraction efficiency was obtained
71% in 10 minutes using trioctylamine (5% w/w) as a carrier, Span 80 (4% w/w) as a surfactant, toluene
(91% w/w) as a diluent, sodium carbonate (10% w/w) as a stripping solution, mixing speed 300 rpm and
feed phase pH 2,5.

Keywords

trioctylamine, propionic acid, emulsion liquid membrane

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