| Title |
Evaluation of Flotation Efficiency and Particle Separation Characteristics of Carbon Dioxide Bubbles using Collision Efficiency Model |
| Authors |
이준용 ( Jun Young Lee ) ; 김성진 ( Seong Jin Kim ) ; 유영훈 ( Young Hoon Yoo ) ; 정팔진 ( Paul Gene Chung ) ; 권영호 ( Young Ho Kwon ) ; 박양균 ( Yang Kyun Park ) ; 곽동희 ( Dong Heui Kwak ) |
| Keywords |
Bubble; CO2; DAF; Flotation; SCC model |
| Abstract |
In this century, scientists realized that carbon dioxide gas in the atmosphere cause a greenhouse effect which affects the planet`s temperature. Therefore lots of attempts have carried out to decrease the discharge of carbon dioxide gas in the field. The dissolved carbon dioxide flotation (DCF) process was developed as an alternative of DAF process to decrease the discharge and reuse of carbon dioxide as well as to save energy consumption. To investigate the particle separation characteristics and the flotation efficiency of carbon dioxide, SCC model was employed in the DCF process which has been applied extensively for the evaluation and simulation in the DAF process. The simulation results by the SCC model revealed the predicted curve of flotation efficiency became decreased gradually over the optimal pressure range of saturator about 1.6 atm in accordance with the experiment results of the DCF pilot plant and the size distribution and the bubble volume concentration of CO2 bubbles depending on the operation pressure of saturator. The findings through the simulation results led to the conclusion that there was no significant difference between CO2 bubbles and air bubbles, affecting on the practical flotation efficiency, in terms of the initial collision and attachment efficiency. |