Jump to content

Surface precipitation model


 Share

Recommended Posts

Hello everyone,

I am trying to reproduce the surface precipitation model of Cu in HFO y HAO developed by Karthikeyan and Elliott (1999) (Surface Complexation Modeling of Copper Sorption by Hydrous Oxides of Iron and Aluminum, Journal of Colloid and Interface Science 220, 88–95 (1999). I would like to edit FeOH.dat sorption file to include equations [5] to [8] considered by the authors. However, I am not sure how due to these equations consider both sorbed and precipitated species

To include eqs. [5] and [6] I was thinking of include the following species:

 

>(s)FeOHCu(OH)2H+

     charge=  1.0       mole wt.=  171.4228

     4 species in reaction

       1.000 >(s)FeOH       -1.000 H+              1.000 Cu++

               2.000 H2O

     log K=  -0.7500    dlogK/dT=   0.0000

             

>(w)FeOHCu(OH)2H+

     charge=  1.0       mole wt.=  171.4228

     4 species in reaction

       1.000 >(w)FeOH       -1.000 H+              1.000 Cu++

               2.000 H2O

     log K=  -0.7500    dlogK/dT=   0.0000

 

but I am not sure if this is a proper way to represent this model of surface precipitation.

Regarding to eq. [7] and [8], I don’t know how to include it, due to these equations represent the change in Ksp precipitation due to HFO adsorption.

 

I would appreciate any recommendation

Best regards,

Mauricio Montecinos

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...