METHOD FOR THE RECOVERY OF ALKALINE SOLUTION AND METHOD FOR PRODUCING REGENERATED CELLULOSE MOULDED PARTS COMPRISING SUCH A METHOD

A method (100， 101， 102) for recovering alkaline solution (1) from a waste liquor (2) contaminated with hemicelluloses (5) and a method (200， 300) for treating (210， 310) a starting material containing cellulose are used (203， 303) showing such a method (100， 101， 102) in which the waste liquor (2) as a feed stream (6) via a separation method (7， 50) into at least one alkaline-enriched target fraction (8)， and at least one residual fraction (9) containing hemicelluloses (5) is separated. In order to obtain a recovered alkaline solution with high purity， it is proposed that the separation process (7， 50) is a chromatographic separation process (7， 50) and the feed stream (6) therein as part of a mobile phase (10) through an alkali-resistant stationary one Phase (11) is performed in order to separate this into the target fraction (8) and the remaining fraction (9).