PROCESS FOR RECOVERING ALKALINE SOLUTION， AND METHOD FOR PRODUCING REGENERATED CELLULOSE MOULDED BODIES， WHICH METHOD COMPRISES SUCH A PROCESS

The invention relates to a process (100， 101， 102) for recovering alkaline solution (1) from a waste liquor (2) contaminated with hemicelluloses (5)， and to a method (200， 300) for treating (210， 310) a starting material (203， 303) that comprises cellulose， which method comprises a process (100， 101， 102) of this type， wherein the waste liquor (2)， in the form of a supply stream (6)， is separated by means of a separating process (7， 50) into at least one alkaline-enriched target fraction (8) and at least one residual fraction (9) that comprises hemicelluloses (5). In order to obtain a recovered alkaline solution having a high level of purity， according to the invention the separating process (7， 50) is a chromatographic separating process (7， 50) and the supply stream (6) is conveyed therein as part of a mobile phase (10) through an alkali-resistant stationary phase (11) in order to separate these into the target fraction (8) and the residual fraction (9).