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Figure 8 | Geochemical Transactions

Figure 8

From: On the potential for CO2mineral storage in continental flood basalts – PHREEQC batch- and 1D diffusion–reaction simulations

Figure 8

1D reaction–diffusion of CO 2 into permeable basalt. Partial pressure of the inlet boundary was fixed at 100 bar and with a column temperature of 40 C. As consumption of CO2 by siderite growth affects the depth of CO2 diffusion, we ran a sensitivity study on reactive surface area going from no reaction (a) up to the base case (c). Finally the amount of CO2 trapped as solid carbonate (siderite) was compared for the base case and reduced reactive surface area (d). We see that the reaction rates strongly constraint the depth of the column affected by the CO2 diffusion.

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