| abstract |
Disclosed is a method for salting out and extracting acetone and butanol from fermentation liquor. The method is characterized by: adding one or more than two salts and one or more than two extractants to the fermentation liquor of acetone and butanol, in which salt saturation reaches 10%-100%, and the volume ratio of fermentation liquor containing the salt to the extractant is 1:0.1-1:5; and standing until phases separation to obtain an upper phase and a lower phase respectively, wherein the upper phase is a solvent or an extracting phase rich in acetone and butanol, and the lower phase is a salt-rich phase or a raffinate phase. The method has simple technology, short separating time and low separating cost, and it is therefore a method of separating acetone and butanol with promising industrial application. |