| 摘要 |
PROBLEM TO BE SOLVED: To inhibit atomization of glycerol when a glycerol aqueous solution is irradiated with ultrasound.SOLUTION: In the present invention, a glycerol aqueous solution as raw material comprises glycerol and lower alcohol, and a mass content ratio of lower alcohol to glycerol is 0.1 or more and 50 or less, and the glycerol aqueous solution is irradiated with ultrasound for atomization of water and lower alcohol, thereby achieving concentration. |
