RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Hematite
Reference: WAT01b
SCM Type: DDL - Diffuse Double Layer
Ligand: NpO2<1+> - neptunyl(V)
Site Type: »Fe-OH
Equation: »Fe-OH + NpO2<1+>  ⇔  »Fe-OH-NpO2<1+>
LogK: 12.07 ± 0.03         LogK°I=0 (Conversion to I = 0):   12.18         LogK2.31 nm−2 (SSD-normalized):   13.01
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Ligand Concentration Range: 6E-6 and 1E-12 mol/L
Fit Method: FITEQL
Comment: 0.1 mol/L NaNO3 or tris(hydroxymethyl)aminomethane+2-morpholinoethane sulfonic acid; SCM calculations; experimental data from batch sorption experiments [NS91] and [TEI95]; no CO2; solid concentration 1 and 20 g/L
 
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