[Using parallel rates for minerals]

Hi Brian,

 

I was suspecting something like that for the kinetic redox so it is clear to me now. Anyway, your suggestion of summing the rates works fine. So, many thanks for your quick and efficient reply.

 

Benoît

[Using parallel rates for minerals]

Hi,

 

I am unsuccessfully trying to simulate the kinetically-controlled behavior of a mineral using 2 parallel rate laws (React, version 10).

 

I have tried several cases, the simplest being based on the Ch28_Mn react script provided with GWB. This test case simulates the oxidation of Mn(II) into Mn(OH)3(cr) using a 'redox' kinetic rate law. If I simply add 'reactants->kinetic->Mineral->Mn(OH)3(cr), in order to assign a kinetic control of the mineral dissolution, it looks like the redox oxidation reaction now affects the Mn(III) concentration instead of the mineral concentration.

 

So, I understand that once a TST kinetic is turned on, then the mineral concentration can only been altered through this TST rate. Is this correct? If yes, is there a way to add another rate to the TST? Thanks in advance for your responses.

 

Benoit