METHOD FOR SEPARATING SOLUTE FROM SOLUTION CONTAINING SUPERCRITICAL CARBON DIOXIDE

摘要

PROBLEM TO BE SOLVED: To provide a method for selectively separating/recovering a selected solute on the surface of a specific material from a solution containing supercritical carbon dioxide, which method is friendly to the environment and is carried out while saving energy and reducing the treatment cost.

SOLUTION: The method for separating/recovering the solute in the solution comprises the steps of: putting the material having pores of predetermined pore size in the solution which contains supercritical carbon dioxide and in which the solute to be separated is dissolved by the amount equal to or smaller than the solubility; and precipitating the solute in the pores mainly by means of capillary condensation phenomena in pores.

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