Improvements in the Treatment of Waste Sulphite Cellulose Lye.

... 24,738. Onsager, G. T. Oct. 30. Materials for making alcuhol.-In the manufacture of alcohol from waste sulphite cellulose lye by means of yeast and nutriment, the nutriment used is produced by the hydrolysis of milk sugar, preferably that contained in skimmed milk or whey. The skimmed milk or whey and a little acid to precipitate the casein are added to a portion of the waste lye, and the mixture is heated, preferably in vacuo; it is then filtered to remove the casein-lignine sulphonic acid compound, and the filtrate with an addition of lye and a little acid is heated in vacuo to hydrolyse the milk sugar. The liquid is filtered to remove some salts of lime, neutralized with marble powder, and fermented with yeast. The casein-lignine-sulphonic acid compound can be used as a substitute for casein.