PROCESS FOR SEPARATING AN IONISED SUBSTANCE FROM AN AQUEOUS SOLUTION

摘要

1474238 Ion separation by cell membranes KERNFORSCHUNGSANLAGE JULICH GmbH 22 May 1974 [23 May 1973] 22898/74 Heading B1X [Also in Division Cl] An ionised substance is separated from an aqueous solution containing it by treating the solution with vesicles formed from cells of an organism and which contain an internal aqueous solution containing a complexing agent for the ionised substance, the osmolarities of the internal solution and of the aqueous solution being sufficiently similar as to maintain the cell membrane impermeable to the complexing agent, the ionized substance migrating through the cell membrane and being complexed therein, after which the vesicles are sperated from the aqueous solution. The aqueous solution may contain K+ and at least 0.5 mM/l of Mg++ or CA++ or both. The vesicles may be formed by introducing the cells into an exchange solution, also including complexing agent, whose osmolarity is lower than that of the cell contents and increasing the osmolarity of the solution so that-it is similar to that of the original cell contents. The cells used may be bacterial cells and the complexing agent EDTA. The removal of Ni from an aqueous solution using erythocytes and dimethyl glyoxine is exemplified.