anzhelika40289

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

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!

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

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.