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Title: Separation of L-Glutamic Acid by Emulsion Liquid Membrane Extraction
Authors: Bhuvaneswari, S
Sheriffa Begum, K M Meera
Sivashanmugam, P
Anantharaman, N
Sundaram, S
Issue Date: Apr-2003
Publisher: NISCAIR-CSIR, India
Abstract: Emulsion liquid membrane extraction has been carried out to separate L-glutamic acid in a batch extractor. The emulsion is formulated by using kerosene as solvent, water as internal stripping phase, tri-ethanol amine as an emulsifier and oleic acid as carrier. The effect of emulsifier concentration on emulsion stability was studied and the malimum stability of emulsion was obtained for an emulsifier concentration of 1.0 per cent (v/v). The percentage reduction of amino acid (solute) in external phase was significantly affected by the parameters such as emulsion to external phase (M/E) ratio, agitator speed, emulsifier concentration, carrier concentration and pH of both external and internal phase. The maximum solute reduction of 66.0 per cent was obtained for M/E ratio of 0.2 (v/v), an agitator speed of 150 rpm, emulsifier cone of 1.0 per cent (v/v), carrier cone of 4.0 per cent (v/v), pH of external phase at 4.0 and pH of internal phase at 7.8. The above emulsion system is found to be highly feasible than the emulsion system consisting of lubricating oil -0.5 M HCl solution and Indian glycol emulsifiers for extraction of L- glutamic acid where the maximum solute recovery of 63.5 per cent was obtained for MIE ratio of 0.25 (v/v) at 150 rpm with external phase pH of 4.0.
Page(s): 329-333
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.62(04) [April 2003]

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