[X2t leaching modeling]

Hi Brian,

 

I got my model running. Thank you very much for your help.

You're right. It didn't like zeros for concentrations. And I also had to put extra Na ion with a small concentration because the program gave me that mistake with a large SO4-- residual.

I posted an updated model if you are interested.

 

Thank you very much! I appreciate your help.

 

Anzhelika.

Holy Moses.x2t

[X2t leaching modeling]

Hi Brian,

 

Thank you very much. I will try to do it that way right now.

I was going to use Fe(OH)3/Fe2(SO4)3 for adsorption because iron hydroxides may adsorb some of the contaminants. But I think not to include it now because they can be washed off with the rain flow.

I don't have much data for this project. I was just assuming that the surface of the tailing pile is comprised mostly of sulfates because of oxidation.

 

I will lwt you know how it goes.

Thanks a lot, Brian!

[X2t leaching modeling]

Brian,

 

Thank you very much for your help.

I changed to thermo.com.V8.R6+.dat thermodynamic database.

But I still can't get my model running.

I'm sending my file and will very very appreciate if you or somebody else take a look at it.

In the initial pane, I put concentrations of the contaminants (they are given from sampling analysis) and 10 % volume of Fe2(SO4)3 (I was going to use Fe(OH)3 but the program didn't like it). In the inlet pane, I put concentrations of ions in a synthetic rain water.

I'd like to simulate what concentrations of the matals will be at the toe of the tailing pile in order to model a bioreactor for treatment.

 

Thank you very much.

Anzhelika. Holy Moses.x2t

[X2t leaching modeling]

Hello.

I'm having troubles with getting my model run in X2t. I will very appreciate your help.

I would like to simulate a leachate from a tailing pile after a storm event (acid mine drainage).

But when I run my model it gives me a mistake (N-R didn't converge after 999 its....).

The contaminants are Zn, Cd, and Pb (there is another thing. I didn't see Cd in the dropdown menu where species are selected).

I assumed that the concentrations are uniform along the pile since there is average concentration data. For my inlet, I used species of sinthetic rainwater.

Is it possible to model what will leach after a storm event to the toe of the tailing pile?

 

Thank you very much in advance.

Anzhelika.