Dissolved carbon dioxide stripping while maintaining volatile components by feeding gaseous nitrogen using a microbubble generator

Dissolved carbon dioxide (dCO 2 ) stripping from a model solution containing sake flavor by feeding gaseous nitrogen (N 2 ) using a microbubble (MB) generator was investigated. The effect of dCO 2 stripping by N 2 MB increased significantly with increasing flow rate of gaseous N 2 from 100 to 200 mL/min. dCO 2 stripping from 3,000 mL of the model solution was achieved by feeding N 2 MB at a flow rate of 200 mL/min for 4 min. Volatile components from model solution containing sake flavor were hardly reduced even after feeding N 2 MB at a flow rate of 200 mL/min for 15 min by cooling to below 10 °C. On the other hand, non-microbubbled gaseous N 2 at a flow rate of 200 mL/min was not very effective in stripping dCO 2 . Therefore, the use of N 2 MB with cooling to below 10 °C was effective in stripping dCO 2 while maintaining the volatile components in model solution containing sake flavor.