Jump to content
Geochemist's Workbench Support Forum

Speciation and Saturation with High Saline Water


 Share

Recommended Posts

I have an important question just came up from my co-worker;

We would like to perform a variety of speciation and saturation index calculation with geothermal water highly saline (like brine). Does GWB have capability to handle this composition of water in terms of activity coefficient calculations? How does (what equations) GWB utilize to calculate activity coefficients with waters that have high ionic strength?


Your immediate help or reference will be greatly appreciated in this matter.


Best Regards

Link to comment
Share on other sites

Hello Can,

 

You can calculate activity coefficients using the B-dot model (an extended form of the Debye-Huckel equation), you can emulate the activity models used in other popular modeling programs (PHREEQC, WATEQ4F, or MINTEQ), or you can implement the virial methods (Pitzer equations) for better accuracy at high ionic strength.

 

For information on the different thermodynamic datasets distributed with the software, see section 2.3 of the GWB Essentials Guide and section 7.4 for more on the implementation of activity coefficients and activity models in The GWB. Chapter 8 of the Geochemical and Biogeochemical Reaction Modeling text includes more on estimating values for activity coefficients using virial methods.

 

Hope this helps,

 

Katelyn

Aqueous Solutions LLC

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
×
  • Create New...