Steph Posted September 11, 2020 Share Posted September 11, 2020 Hi Jia, Many thanks for your earlier response regarding problems with modelling CO2 solubility in brine. I had actually tried the sliding fugacity method but, while it shows how the dissolved CO2 concentration changes, there seems to be no constraint on how much can be dissolved. I have tried adding as much as 10 molar CO2, all of which dissolves - something which isn't possible! I am attaching files to demonstrate what I have been trying, along with a spreadsheet illustrating the difference between the results I generated with GWB and those I obtained using Phreeqc. I hope these help clarify the problem I am having, but please do let me know if not and I'll try to explain myself better. I'd really appreciate your help with this. Many thanks, Steph 4722_dilute_test_CO2_fixed.rea 4722_dilute_test_CO2_sliding.rea GWB comparison.xlsx thermo_hmw.tdat Quote Link to comment Share on other sites More sharing options...
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