| 摘要 |
For the removal of amines from their aqueous solutions, in particular effluents from cellulose processing,… - the aqueous amine solutions are contacted with a cation exchanger, whose anchoring groups consist of carboxyl groups, in order to charge the cationic exchanger with amines,… - the charged cationic exchanger is treated with an aqueous solution of an acid having a pKa value greater than 3.0 in order to elute the amines, and - the eluate is processed by distillation, a part of the weak acid being separated from the amines and being recovered if desired. …<??>The process according to the invention allows a simple and inexpensive disposal of amine-containing effluents. |
