Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1994-02-28
1996-08-27
Spear, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
210651, B01D 6114
Patent
active
055498302
ABSTRACT:
A method of processing a feed liquid in the form of an extraction solution containing taxane solutes that is an extraction product of a biomass utilizes at least one semipermeable membrane to remove at least one taxane solute from the solvent by reverse osmosis. The feed liquid is placed in a first region on one side of the membrane and pressure is supplied to transport constitutes of the feed liquid across the membrane to a second region as a first permeate while retaining a first retentate in the first region. The taxane solute may be either retained or transported. Where the taxane solute is transported, the method can further include the use of a second semipermeable membrane of a pore size different from the first membrane and supplying a pressure to transport some of the first permeate across the second membrane as a second permeate while retaining a majority of the desired taxane solute as a second retentate. Here, the first membrane has a pore size which allows transport of the taxane solute while the second membrane has a pore size that retains the taxane solute. A variety of solvents and useable membranes is disclosed.
REFERENCES:
patent: 3883425 (1975-05-01), Dorn
patent: 4966892 (1990-10-01), McAnalley
patent: 5019504 (1991-05-01), Christen et al.
patent: 5084182 (1992-01-01), Arthur
patent: 5098575 (1992-03-01), Yaeli
patent: 5102539 (1992-04-01), Siegfried
patent: 5106734 (1992-04-01), Nielsen
patent: 5108604 (1992-04-01), Robbins
patent: 5108879 (1992-04-01), Abe et al.
patent: 5330756 (1994-07-01), Steuart et al.
Standard Methods for the Examination of Water and Wastewater, 17th Edition, pp. 1-56.
Membrane Products, Selective Reverse Osmosis Membranes (Advertisement).
Carver David R.
Hughes Charles L.
Prout Timothy R.
Workman Christopher T.
Martin Timothy J.
NaPro BioTherapeutics, Inc.
Spear Frank
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