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Tom Meuzelaar

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  1. Katelyn: I wonder if it happened during my software update. I notice that the Tedit icon is no longer active in Windows Explorer for my thermo and surface datasets, whereas the other icons are displaying just fine- so perhaps there is a corruption. Is there a way to re-install the update, or do I need to reinstall the the entire code? Thx. Tom
  2. Hi Katelyn: Sorry- I mistyped- it occurs with the default database- IonEx.sdat, not my revised DB, which I manually edited. Tom
  3. Hi Brian: I was unable to remove the sodium basis species from the cation exchange template Db (IonEx_revised.sdat) using TEdit. After deleting the default basis species (which also removed the two basis species), I was unable to add a new basis species (calcium)- when I select 'Ca' and click apply, nothing happens. The same behavior for any other species. I am using 11.0.5. I was able to manually edit the DB, so it's fine, but I thought I should report it. Tom
  4. Thanks Brian- I think we'll wait for the patch. We've got neutral species for numerous metals; I tried a quick global search and replace in the Minteq thermo dataset- X1T does indeed accept the revised thermo database and the surface dataset with neutral species, but renaming the revised minteq thermo database causes errors with how the alkalinity constraint is applied. I could leave the database name untouched, but then we have problems that will cascade through a number of our other models. Tom
  5. Hi Brian: I'm modeling simple linear selenium sorption in X1T using v. 11.0.4, and the Minteq database. I've created a surface dataset (attached 'Kd_modified...' with Kd values for several selenium species. It works fine until I add a neutral species with '(aq)' suffix. Then I get the attached error- this occurs in both React and X1T. I haven't tried replicating with thermo.dat, but I'm wondering if the extra space between species and '(aq)' in Minteq is causing the problem. Perhaps it's something else I've overlooked. Thanks in advance, Tom Kd_modified_Se_w_neutral_species.sdat
  6. Excuse me,I have a question to ask you.

    When I start to use the soft,I find a problem that I can not deal with. Firstly I did a small experiment using the soft,I want to see the result

    of the action between Ag+ and Cl-.In the SpecE8 module,I populated the Basis only with Ag+ and Cl-, and set both their amount at a concentration of 1 mg\kg,and the mass of H2o is 1 free kg,last I set th...

  7. Hi David: Water activity is the activity of the water phase, it is not the same thing as water vapor fugacity. Would you mind attaching a saved copy of your script so I can take a look at it? Regards, Tom
  8. Hi David: Still not exactly sure what you are trying to do [remainder of this post deleted, follow up with response below]. Hope that helps, Tom
  9. Hi David: GWB calculates water vapor fugacity as well- you can see this under the 'gas fugacities' section in the text output, or under the Gtplot plotting variables. Hope that helps, Tom Meuzelaar RockWare, Inc.
  10. Hello: This isn't necessarily an issue with charge balance. It could be that you've defined a system that is far from equilibrium, and thus has trouble converging. If the pH value is important, I recommend starting with 3.5, so the system initially converges, then sliding the pH (in the Reactants pane) down to 3.1, so that you have a stable chemistry. Hope that helps, Tom Meuzelaar RockWare, Inc.
  11. Hi Jack: When I look at the plot results for your script, it appears that the pH drops to 3.5 after the addition of 1 kg of fluid, correctly mimicking the flush configuration. Do you see something different? Regards, Tom Meuzelaar RockWare, Inc.
  12. Hi Godfrey: The zero values are not allowable- I would start by removing them (or replacing them with n/d notation in GSS). Hope that helps, Tom Meuzelaar RockWare, Inc.
  13. Hi: The time function in React is primarily used for kinetic mineral dissolution and precipitation. Without specifying a kinetic mineral rate law, it doesn't matter what time length you specify, you'll always get the same reaction results. Hope that helps, Tom Meuzelaar RockWare, Inc.
  14. Hi Olivia: We are wondering if a firewall or anti-virus program are temporarily disabling the software that runs your hardware lock. Is it possible to disable your firewall and/or antivirus software to see if that makes a difference? If it does not, can you go to the following address on your browser: http://localhost:1947, and click on the HASP keys menu on the left hand side? Please send the resulting screenshot to my attention via email. Regards, Tom Meuzelaar RockWare, Inc.
  15. Hi: It looks like the low pH is the reason for non-convergence. If you try a slightly higher pH (3.5), the script runs fine. Hope that helps, Tom Meuzelaar RockWare, Inc.
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