| abstract |
: To remove amines from aqueous solutions thereof, in particular from waste waters obtained in cellulose processing, - the aqueous amine solutions are contacted with a cation exchanger whose anchor groups consist of carboxyl groups, in order to charge the cation exchanger with the amines, - the charged cation exchanger is treated with an aqueous solution of a weak acid having a PKa larger than 3.0 in order to elute the amines, and - the eluate is processed by way of distillation, wherein a portion of the weak acid is separated from the amines and reclaimed, if desired. The method according to the invention offers a simple and cheap way of disposing amine-containing waste waters. |