Modeling of CO2 dissolution by static mixers using back flow mixing approach with application to geological storage

Suggesting a numerical pressure-decay method for determining CO2 diffusion coefficient in water

“…Different results produced from these techniques refer to the analytical solution and approximations that finally give the Eqs. (16)- (18). The results (outputs) are in good agreement to the given (input) values.…”

“…The results presented in Table 5 show difference compared to the given diffusivity but are reliable. In the real cases, non-ideality of dissolution, perturbation as a [39] 2.351e−8 (16) Sheikha et al [40] 2.048e−8 (17) Rasmussen et al [42] 6.886e−8 (18) result of setup vibration, temperature variation, the gas leakage through the cell rings can lead to higher errors. Thus, we think the error from our modeling is smaller than experimental errors and the similar procedure in the paper can be suggested to the real laboratory situation to find diffusivity.…”

“…This is so important that many of the previous papers worked on this issue somehow. Strategies such as carbonated water injection [13][14][15], ex situ dissolution approach [16,17], static mixer [18], injecting brine on top of the injected CO 2 [19], hydraulic fractures in the injection wells [20] and using horizontal injection wells in the absence of chase brine injection [20] are some examples. Here, we focus on determining CO 2 diffusion coefficient (DC) using an experimental model.…”

Research Progress on CO2 Capture, Utilization, and Storage (CCUS) Based on Micro-Nano Fluidics Technology

“…The dissolution of CO 2 in water depends on temperature, pressure, and salinity conditions [129]. Therefore, developing more effective methods to represent the interaction between CO 2 and water and the behavior of water and gas in porous media is the basis for calculating the amount of carbon storage in saline aquifers [130]. CT scanning is commonly used to observe sediment distribution and changes in pore size and permeability to determine the impact of salt precipitation on geological carbon storage (GCS) [131].…”