| abstract |
To separate amines from their aqueous solutions, in particular waste water from cellulose processing the aqueous amine solutions are brought into contact with a cation exchanger whose anchor groups consist of carboxyl groups in order to load the cation exchanger with the amines, - the loaded cation exchanger is treated with an aqueous solution of a weak acid with a pK a value greater than 3.0 in order to elute the amines, and - The eluate is worked up by distillation, part of the weak acid being separated from the amines and possibly recovered.n n n The method according to the invention enables simple and inexpensive disposal of amine-containing wastewater. |