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AMINO ACIDS RECUPERATION BY LIQUID-LIQUID EXTRACTION AND SUPPORTED LIQUID MEMBRANE EXTRACTION. OPTIMIZATION OF THE PROCESSES


AMEL DIDI, MOHAMED AMINE DIDI *
TLEMCEN UNIVERSITY, FACULTY OF SCIENCES, BOX 119, TLEMCEN, ALGERIA

Issue:

SCSCC6, Volume X, No. 2

Section:

Volume X, No. 2 (2009)

Abstract:

The amino acids constitute a significant class in biochemical sciences. Of this importance, their extraction and purification do not cease developing with the sight of research in progress.

Our work concerns a comparative study by two techniques liquid-liquid extraction (ELL) and supported liquid membrane (SLM), of phenylalanine (phe) and tyrosine (tyr). Several extractants were the subject of this study, the di 2-ethylhexyl phosphoric acid (D2EHPA), the tri-octy phosphine oxide (TOPO), the tri-butyl phosphate (TBP) and the quaternary ammonium salt Aliquat 336 and “D2EHPA+TBP” mixture. The results showed that the D2EHPA, is high performance in ELL of phe (82%) and tyr (23.4%). Mixture “D2EHPA+TBP”, produced a synergistic effect on phe (73.5%) by ELL. The extraction by SLM of phe (feed solution 36.4%, stripping 100%) and of tyr (feed solution 2,4%; stripping 5.6%) by TBP, shows that this technique is powerful, to separate the mixture from these two amino acids in one extraction stage. The effects of solvents and salt were also tested; however the optimization of these processes remains to be perfected.

Keywords:

Phe, Tyr, LLE, SLM, Extractants, Effect of solvent, Effect of salt, UV-Visible Spectroscopy, Reactive extraction.

Code [ID]:

CSCC6200910V02S01A0006 [0002634]

Full paper:

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