17, 4 Carsten: Utilization of Waste Molasses 407 
sulphate and lime was repeated, and after filtration the alkalinity 
brought back to 0.2 per cent sodium carbonate by adding soda 
ash. The filtrate was then evaporated in a vacuum pan to a 
thick sirup, which contained between 30 and 35 per cent of 
glycerin. 
It was then distilled, and 50 pounds of glycerin were obtained, 
roughly half the quantity present in the fermented liquid. 
The carbonaceous ash is high, but by a second distillation a 
good product was obtained. The glycerin can be nitrated nor- 
mally. 
A second treatment with lime and ferrous sulphate will give 
no results, and a part of the glycerin will be lost in any case. 
A production of 5.5 to 6 pounds per hundredweight of molasses 
may be expected by this process. 
