Table 11 Regression slopes and intercepts from Figure 8 used to calibrate predictive alkaline earth surface complexation model.
From: Surface complexation model for strontium sorption to amorphous silica and goethite
Alkalin Earth | slope | rm | log K"ii,m (expt) | η/Re,m | ΔΩr,m (expt) | rhydr,m | γj | Ωabs |
|---|---|---|---|---|---|---|---|---|
2>SOH + 2>SO- + M2+ + OH- = (>SOH)2(>SO-)2_M2+ | ||||||||
Mg | 18.21 | 0.72 | 30.85 | 125.78 | -24.84 | 3.46 | -2.14 | 147.64 |
Ca | -23.91 | 1.00 | 32.76 | 174.77 | 32.62 | 3.09 | -2.14 | 147.64 |
Sr | -23.63 | 1.16 | 32.99 | 174.77 | 32.24 | 3.09 | -2.14 | 147.64 |
Ba | -54.65 | 1.36 | 35.05 | 224.36 | 74.57 | 2.88 | -2.14 | 147.64 |
2>SOH + 2>SO- + M2+ = (>SOH)2(>SO-)2_M2+ | ||||||||
Mg | -35.30 | 0.72 | 28.813 | 59.08 | 48.17 | 3.46 | -0.65 | 11.38 |
Ca | -40.73 | 1 | 29.524 | 68.04 | 55.57 | 3.09 | -0.65 | 11.38 |
Sr | -43.11 | 1.16 | 30.545 | 68.04 | 58.82 | 3.09 | -0.65 | 11.38 |
Ba | Â | 1.36 | Â | 74.45 | Â | 2.88 | -0.65 | 11.38 |
>SO- + M2+ + OH- = >SO-_MOH+ | ||||||||
Mg | -16.09 | 0.72 | 11.26 | 61.72 | 21.96 | 3.46 | -0.77 | 39.8 |
Ca | -21.98 | 1.00 | 11.61 | 71.56 | 29.99 | 3.09 | -0.77 | 39.8 |
Sr | -24.64 | 1.16 | 11.74 | 71.56 | 33.62 | 3.09 | -0.77 | 39.8 |
Ba | Â | 1.36 | Â | 78.68 | Â | 2.88 | -0.77 | 39.8 |