Abstract
We must overcome the global warming problem caused by increase of atmospheric CO_2 concentration to keep our sustainable growth. GLAD (Gas Lift Advanced Dissolution) System has been investigated to mitigate the estimated peak of atmospheric CO_2 concentration over the next few hundreds years. The system dissolves gaseous CO_2 at a shallow portion and transports CO_2 solution to a great depth via gas-lift pump. In the present paper, first, we investigate a structure of bubbly flows in a large-diameter pipe. Second, on the basis of the experimental results, numerical model of the flows are discussed. Third, we carry out numerical simulation of the GLAD System to obtain pH level of CO_2 solutions discharged from the system. Environmental acceptability of the GLAD System will be discussed on the basis of these results.
