Effect of the Stripping Conditions on the Separation of Organic Acid by Supported Liquid-membranes

Abstract:

The subject mainly through optimizing anti-extraction program,study the feasibility of the technology of extracting organic acid from anaerobic acid mixture by supported liquid membranes.The experiments showed the supported liquid membranes system which composed as the following: hydrophobic polypropylene hollow fiber membrane,the extractive solvent,the organic solvent and the anti-extractive solvent can be efficiency extracted organic acid.The best condition in the system is that: extraction reaction time is 360 minters,NaHCO3 in the anti-extraction is 20 g/L,pH is 9,concentrate ratio is 2.0.The technology of extracting and concentrating organic acid from anaerobic acid mixture by supported liquid membranes can be preferably realized.