RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Hematite
Reference: EP20
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Fe-OH
Equation: 2 »Fe-OH + UO2<2+>  ⇔  (»Fe-O)2-UO2 + 2 H<1+>
LogK: -4.27        LogK°I=0 (Conversion to I = 0):   -4.18         LogK2.31 nm−2 (SSD-normalized):   -2.40
Experiment: Batch Sorption Experiments
Ionic Strength: 0.01 mol/L NaCl
Temperature: 308.15 K
Solid/Liquid Ratio: 0.51 g/L
pH Range: 3 - 6.5
Ligand Concentration Range: 2.16E-8; 4.35E-8 mol/L
Fit Method: FITEQL
Comment: referenced to the mole fraction standard state and calculated with the equation: log Kχ = log KSC + log (N†AsCs), N†...molar site density (9.47E-6 mol/m²), As...BET surface area (30.7 m²/g), Cs...solid-phase concentration (0.51 g/L)
 
1 data sets were retrieved