RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Hematite
Reference: BCEK12
SCM Type: 1pK-TP - 1pK-Three-Plane
Ligand: CO3<2-> - carbonate
Site Type: »Fe-OH
Equation: 2 »Fe-OH<0.5-> + CO3<2-> + 2 H<1+>  ⇔  (»Fe-O)2-CO<1-> + 2 H2O
LogK: 21.94        LogK°I=0 (Conversion to I = 0):   22.21         LogK2.31 nm−2 (SSD-normalized):   23.81
Experiment: Batch Sorption Experiments
Ionic Strength: 0.01 mol/L NaCl
Temperature: 298.15 K
pH Range: 3 - 7.5
Fit Method: ECOSAT + FIT
Comment: S/L ratio: 0.04 - 1 g/L;
CO2 partial pressures: 0.39, 10, 100 hPa;
Fitted based on the assumption that the reduction in sorbed arsenate is due to competition with carbonate species
 
1 data sets were retrieved