Adsorption separation of sterols from tall oil pitch with carbon

Details Adsorption separation of sterols from tall oil pitch with carbon Adsorption separation of sterols from tall oil pitch with carbon

1987-12-11

1989-07-18

Cintins, Ivars

Liquid purification or separation

Processes

Ion exchange or selective sorption

210690, 26039725, B01D 1500

Patent

active

048491128

ABSTRACT:
An adsorptive separation process for separating sterols from a tall oil feed mixture, which process comprises contacting the feed mixture with an adsorbent comprising a carbon sieve having average pore diameters greater than about 20 .ANG., especially 30-90 .ANG., and a surface area greater than about 300 m.sup.2 /g, especially 700-1100 m.sup.2 /g, and, preferably, a carbonaceous pyropolymer or carbonized resin, selectively adsorbing substantially all of the sterols to be separated to the substantial exclusion of the other components and thereafter recovering high purity sterols. A desorption step is used to desorb the adsorbed sterols with an aromatic liquid hydrocarbons, e.g., toluene or chlorobenzene.

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