Table 2 Reaction stoichiometries and stability constants used in DLM calculations for HFO.
From: Surface complexation modeling of Cu(II) adsorption on mixtures of hydrous ferric oxide and kaolinite
Reaction | Log Stability Constant | V(Y) (V(Y)min, V(Y)max) |
|---|---|---|
HFO (2-site model): | Â | Â |
>Fe(s)OH + H+(aq) = >Fe(s)OH2+ | 7.29[4] | Â |
>Fe(w)OH+ H+(aq) = >Fe(w)OH2+ | 7.29[4] | Â |
>Fe(s)OH = >Fe(s)O- + H+(aq) | -8.93[4] | Â |
>Fe(w)OH = >Fe(w)O- + H+(aq) | -8.93[4] | 14.0 |
>Fe(s)OH + Cu+2(aq) = >Fe(s)OCu+ + H+(aq) | 2.89[4] | (10.9, 18.5) |
HFO (1-site model): | Â | Â |
>FeOH + H+(aq) = >FeOH2+ | 7.5[38] | Â |
>FeOH = >FeO- + H+(aq) | -10.2[38] | 12.2 |
>FeOH + Cu+2(aq) = >FeOCu+ + H+(aq) | 0.98 (this study) | (9.5, 16.1) |