[Cyanide Decomposition]

Thanks,

I di it for species. I there short manual for dummies "how to modify dataset and commom mistakes with that"

[Cyanide Decomposition]

Thanks! Brian.

Now I am thinking what whould be easier to get is in kinetic form or mess whith databases (which I am scared to do)

[Cyanide Decomposition]

CN_Average_Barren.reaHi Tom or Brian,

I am trying to model cyanide decomposition using equilibrium approach with adding simple reactants. The process is described here

http://dana6.free.fr/2%20SO2-Air%20cyanide%20oxydation.pdf

Minteq database seems have species I need including metal-CN ones (I cannot attach it due to your uplaoda limits). However, species like CN-, OCN-, and HN4+ are more like components in the database or using “redox” terminology of GWB decupled. Therefore reaction 6.32 and 6.38 does not work . Please, could you propose easy way to achieve the objective without getting into kinetics and catalysis?

May be you advise how fix database to make it work.

Thanks a lot!

Nikolay

 

[GSS crashes]

I cannot patch it.

See attched.

(Read above one time more and that I am more poet than geochemist)

I am sure that I have GWB 8.0

[GSS crashes]

Hi Tom,

I kind of upset with GSS behavior. It crashes sometimes, ~40% cases, when I try to save it. No error messages. Nothing. Gets closed with no changes in the file. I get feeling that it is happening whent I try to change ether concentration units or symbols for the samples. I am getting irritated redoing the work. I can do water chemistry diagram plotting in AqQA that I bight from you, but it has very limited editing options for the plot.

Please see attached file and reccomend what to do.

Thanks,

Nikolay

Brady_min_max.gss

[Mixing fluids and kinetic minerals]

Hi Nikolay:

 

Is the second solution added after the gas injection? If so, take the results of the first run (gas injection w/ kinetic minerals present) and load it back into the Basis tab using the Run - Pickup - System option. Save this as a file. Next, take your second solution, load it into the Basis tab, speciate it, and use the Pickup - Reactants option to load it into the Reactants tab. Now open the file from the first run that you saved. You'll have the result from the first run in your Basis, and the results from the second run in your Reactants tab.

 

Hope that helps,

 

Tom

Thanks for quick response – you save two days for the project (and killed my week end, which supposed to be killed)

I did work, but with problems. First, I load file Acid_brine.rea and run the React. Then I picked the brine to the reactants. Secondly, I loaded file Mineral_160m_CO2.rea with initial solution and mineralogy (aquifer composition). During the second step there is a change happening with H and O on reactants tab (see screenshot and files in your mailbox). Oxygen impacted the most, from -2.3e-10 to -0.001 moles. This change greatly impacts pe of the model. Please could you clarify what am I doing wrong and why is this change happening?

Thanks,

Nikolay

[Mixing fluids and kinetic minerals]

Hi Tom,

I have one fluid on basis tab and kinetic minerals and gas injection rate on Reactants tab.

I would like to add second solution to the system at certain rate (10 ml/year). What is the best in GWB way to do this “kinetic” mixing?

How can I input composition of the second fluid once and then change rate of the injection?

Could you respond today please? – I will be working through weekend.

Thank you in advance,

Nikolay

[Didn't converge]

Nikolay:

 

In running the model without Na-Montmor, but plotting its saturation state, it looks like the mineral is perfectly saturated over the course of the simulation, so there is no thermodynamic drive for a kinetic reaction to proceed. Additionally, none of your kinetic reactions appear to be occurring to any extent over the simulation time you have set, so I wonder if they're necessary at all....

 

Hope that helps,

 

Tom

 

Thanks a lot,

We can close the topic, but I wish we would have a some king topic for "troubleshooting steps for convergance issues" pinned, as there is no such thing in the manual.

[No Scatter data on act2 plot]

Thanks!

Did work when I the file copied into Windows/fonts folder.

[Didn't converge]

Hi Nikolay:

 

I'd start by reducing your component set to the ones that are absolutely necessary for modeling the reaction you are interested in modeling. You have a 30-component model, which will yield large matrices and more than likely cause convergence issues as you add kinetics data in.

 

Hope that helps,

 

Tom Meuzelaar

RockWare, Inc.

 

Thank you for the advice,

Unfortunately, I need all of them - regulatory requirements. Most of them now are conservative and model runs well without Na-montmorillonite, as I mentioned.

Any other suggestions why montmorillonite chokes the model?

Regards,

Nikolay

[No Scatter data on act2 plot]

Hi Tom,

I tried extract the .ttf file and right click on it - there is no "installation option". See attached screenshot in your e-mail.

[Didn't converge]

Hi Tom,

Trying to run relatively simple kinetic model (see attached). It did not converge after addition of the Na- montmorillonite. If this one killed form the reactants or swapped as EQ mineral – model work well. I will probably end up with EQ control for Na- montmorillonite.

I played a bit with time-step settings, but it did not help. I can ether run Na- montmorillonite one set of settings or the rest of the minerals with different ones.

Could you look at the attached file please?

Thank you in advance,

Nikolay

Mineral_35m.rea

[No Scatter data on act2 plot]

Nikolay:

 

Looks like this is not an actual installer. I have attached the font file in a zip file. Place this on your hard drive, right click on the file, and choose the install option.

 

Let me know if this resolves the issue.

 

Regards,

 

Tom

 

Thank you, but it did not work.

I saved it. Right click the file -there is no option to install as it is just win-zip file with font in it, but not self installer. I Could not attach the screeshot - size quota.

Regards,

Nikolay

[No Scatter data on act2 plot]

Hi Nikolay:

 

After talking with the developers, I realize we no longer put separate copies of the font directory on the installation CD. It is actually wrapped up in the installer executable. In all our tests here, the fonts installed just fine.

 

It is critical that you reboot after installation (and in your case, re-installation)- did you reboot, and if so, did that fix the issue?

 

If not, I'll send you a copy of the font installer.

 

Regards,

 

Tom

 

No it did not go off after the reboot.

Please send the installer.

[GSS problem at first start]

Hi Nikolay:

 

It may be an installation issue- I've had one other user report this same error, which went away after re-installation. Would you mind attaching a screenshot of the error. Also, can you uninstall and reinstall and tell me if the problem goes away?

 

Regards,

 

Tom Meuzelaar

RockWare, Inc.

 

Yes. Please see attached.

[No Scatter data on act2 plot]

Hi Tom,

I cannot get scatter data (only – no labels) on the plot of act2. See files attached.

Could you resolve the problems, please?

Thank you in advance.

ph_pe.txt

pH-pe_fe.ac2

[GSS problem at first start]

Your comment

"Also, for your GSS problem, you did not include the GSS dataset, and the screenshot you sent is the same as the Act2 scatter data issue you mention."

 

The screenshot has an error message. I am having the message strating GSS software. No dataset has been generated yet. Problem with instalation?