Comment: |
Fitted Affinity Constants of Adsorbed Phosphate
Complexes Derived by Fitting the Adsorption Data of Figures 1, 2, and 5 {goethite (SA = 96.4 m²/g) systems of Rietra et al. [39] with initial
0.5 mM PO4 for three goethite concentrations (2.5, 5.0, and 10 g/L) and two levels of ionic strength, I = 0.01 and 0.1 M NaNO3} (N = 396 Data Points) Using CD Values Derived from MO/DFT-Optimized Geometries and Corrected for Dipole Orientation; S/L ratio = 3 g/L (0.4 mM ini. PO4 conc., <0.001, 0.05, 0.10, 0.30, 0.40, 0.50 M NaNO3); S/L ratio = 3 - 9 g/L (0.4 - 0.8 mM ini. PO4 conc., 0.5 M NaNO3); 2 »Fe-OH<0.5-> + PO4<3-> + 3 H<1+> = »Fe2-O2<-1+Δz0>-POOH<Δz1> + 2 H2O, Δz0 = 0.63, Δz1 = -0.63) |