Modelling water-rock interaction with pit walls

[Oscar Matias Benavente Zolezzi]

Dear Mike,

In the PITLAKQ's tutorial you have explained (pretty good by the way) that chemical influence of the pitwall in the water quality can be modeled by defining loading rates (g/m2/s) for different components (e.g. S, Fe, Cu). Moreover, different zones of the pitwall can have different loading rates, so theis t litogeochemistry of the wall aking account during the modelling. However, these loading rates are constant values and many imporant reactions that govern the water quality of pitlakes (i.e. pirite oxidation) are dependent on physico-chemical parameters such as pH, redox and others.

I'm wondering if there is a way to specify mineral concentrations (in mol/L) and mineral specific surfaces (m2/L) for different zones of the pitwall?  Could this be done by using the parallel processing of PHREEQC calculation option?

Cheers,
Dr. Oscar Benavente



  
 

[Dr. Mike Mueller]

Dear Oscar,

Am 28.02.17 um 23:12 schrieb Oscar Matias Benavente Zolezzi:

> Dear Mike,
>
> In the PITLAKQ's tutorial you have explained (pretty good by the way) that
> chemical influence of the pitwall in the water quality can be modeled by
> defining loading rates (g/m2/s) for different components (e.g. S, Fe, Cu).
> Moreover, different zones of the pitwall can have different loading rates, so
> theis t litogeochemistry of the wall aking account during the modelling.
> However, these loading rates are constant values and many imporant reactions
> that govern the water quality of pitlakes (i.e. pirite oxidation) are dependent
> on physico-chemical parameters such as pH, redox and others.
>
> I'm wondering if there is a way to specify mineral concentrations (in mol/L)
> and mineral specific surfaces (m2/L) for different zones of the pitwall?

This is bit complex. I need to try a few things myself here.
I am traveling this week and don't have time to look at this.
I will have a look at it next week.

> Could this be done by using the parallel processing of PHREEQC calculation option?

The parallel processing option needs to have a bit more setup.
In general all PHREEQC calculations can be run in parallel.

Best,
Mike

>
> Cheers,
> Dr. Oscar Benavente
>
>
>
>
>
>
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