michael.lawson Posted January 24, 2013 Share Posted January 24, 2013 I am struggling developing a model for barite dissolution and was wondering whether I have something wrong in a unit conversion that someone could help with? I have found a activation energy in the literature of 32 kJ/mol (32000 J/mol) and a pre-exponential factor (Ln A) of -2.41. I convert this to a pre-exponential value of 0.0898 mol/m2s. The input in the kinetic mineral section of GWB requires the input in mol/cm2sec - which I am assuming I should convert to give 898 mol/cm2s (multiply by 10000). This is then in a consistent format with the surface area I have of 107 cm2/g. The issue I have is this gives a very rapid equilibration to high concentrations of aqueous Ba and SO4 within 30 mins which doesn't appear reasonable to me. Have I made in error in converting something that does not require converting? Appreciate any advice and support. Quote Link to comment Share on other sites More sharing options...
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