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GWB activation code or serial number

Found 8 results

  1. Hello, I have encountered an issue when running the react code I can't explain. For my research I need to run evaporation simulations well below the freezing point of pure liquid water. Therefore, I designed an extension of the Thermo_phrqpitz database down to -80oC (60, 40, 20, 0, -20, -40, -60 and -80oC). I added numerous minerals and aqueous species along with their pitzer parameters, from recent literature publications. However, when I run the code, I encounter a sudden jump in water activity between 239 and 239.1 K, which I can't explain in any way. This jump affects the water activi
  2. Hi, I changed some of the logK's for a mineral in the thermo.dat database and realised that I didn't want to do that. How do I revert back to the original thermo.dat database? Thanks, Sam
  3. Hi everyone, After learning the tutorial about “Editing thermo”, i noticed that the range of temperature and pressure are limited. I do know how to modify the logK vaules using SUPCRT92, but i am not sure how to change the parameters of Deby-Huckel parameters/CO2activity coefficient terms and water activity coefficient terms, especially the CO2 1,2,3,4s and H2O 1,2,3,4s. Where can i find those parameters or is there a software can generate them?
  4. Hi GWB Forum, I am currently working on my thesis on corrosion and scaling in thermal waters of geothermal power stations. I hope GWB can help me analyse these reactions in geothermal brines (high pressure, high temperature). Therefore I downloaded the student version. I have the following questions. 1) Can GWB simulate corrosion? 2) As far as I know mineral precipitation can only be calculated with the standard version of GWB. Is there a way to simulate scaling/precipitation in the student version? 3) As far as I know pressure is not included in the calculation, but how can I
  5. Hello, Is there any indication of which database was drawn from when looking at an output file? Thanks! Michael
  6. Hello, I'm looking for some help reconciling (or understanding) log K values for aqueous species with values I'm calculating from various references (Solutions, Minerals, and Equilibria - Garrels and Christ; Chemistry of Glasses - A. Paul). (As a disclaimer - my formal training is in nuclear science and I have little academic training in geochemistry, environmental chemistry or physical chemistry - and I'm hoping I'm just missing something about how these values are calculated.) For instance, the value for Zr++++ is set to log K (25°C) = -0.2385 in the thermo database, and there are no ot
  7. Hello, I am currently working on modeling the precipitation of seawater under evaporation. I am particularly concerned with the Iron containing phases. Which thermodynamic database should I choose to get a reliable result? "HMW" could have been an excellent choice except that it does not contain Fe. The other databases that are present include Fe as well as use B-dot equations. Generally B-dot is valid for Ionic Strengths less than 3 molal , but there were erroneous results (pg 132) cited in the book "Geochemical and Biochemical Reaction Modeling" by Craig Bethke. I am very perplexed
  8. Hi there, We at Geoscience Australia are ready to migrate from version 8 to version 10. I note that now the database format is somewhat different, though (?)backwards compatible; some of the third-party data providers suppply data in new format only (e.g., THEREDA). Where can I find the summary of these database format(s) changes? Thanks! Best regards, Evgeniy Evgeniy Bastrakov Geoscience Australia
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