Method for preparing membranes with adjustable separation perfor

Details Method for preparing membranes with adjustable separation perfor Method for preparing membranes with adjustable separation perfor

1993-10-13

1995-01-31

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210640, B01D 5322, B01D 6108

Patent

active

053856724

ABSTRACT:
Methods for adjustable separation of solutes and solvents involve the combination of the use of a maximally swollen membrane and subsequent vacuum depressurization exerted on the permeate side of that membrane. By adjusting the extent of depressurization it is possible to separate solvent from solutes and solutes from each other. Improved control of separation parameters as well as improved flux rates characterize the present invention.

REFERENCES:
patent: 4575385 (1986-03-01), Brooks et al.
patent: 4909810 (1990-03-01), Nakao et al.
patent: 5049282 (1991-09-01), Linder et al.
patent: 5131266 (1992-07-01), Hassett
Concise Encyclopedia of Chemical Technology, Ed. Kirke-Othmer, Wiley Interscience pp. 741-743.
Handbook of Industrial Membrane Technology, Mark C. Porter, Noyes Publications, Ch. 1; pp. 1-29, 46-56.
The Membrane Alternative: Energy Implications for Industry, Ed. John A. Howell, Elsevier Applied Science, NY, N.Y. pp. 1-7, 99-104.

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