RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: HZ16
SCM Type: ES - Extended Stern
Ligand: PO4<3-> - phosphate
Site Type: »Fe-singly
Equation: »Fe-OH<-0.5> + PO4<3-> + 3 H<1+>  ⇔  »Fe-O<-0.17>-PO(OH)2<-0.33> + H2O
LogK: 29.84 ± 0.23         LogK2.31 nm−2 (SSD-normalized):   29.91
Experiment: Batch Sorption Experiments
Ionic Strength: NaNO3
pH Range: 4-12
Ligand Concentration Range: 2.77E-4 (1); 7.8E-4 (2); 2.45E-3 (3) mol/L
Fit Method: Unknown
Comment: doubly protonated monodentate species MH2; S/L ratio: ads. isoth. 0.05-2 g/L (0.01 M NaNO3), ads. edge (1) 0.0707 g/L (0.1 and 0.95 M NaNO3) and (2) 0.602 g/L, (3) 0.201g/L (0.5 NaNO3); Log K values for the monodentate species, formed from either ≡FeOH(a) or ≡FeOH(b), are kept equal
 
1 data sets were retrieved