RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Magnetite
Reference: WAT01b
SCM Type: DDL - Diffuse Double Layer
Ligand: NpO2<1+> - neptunyl(V)
Site Type: »Fe-OH
Equation: »Fe-OH + NpO2<1+> + 2 H2O  ⇔  »Fe-O-NpO2(OH)2<2-> + 3 H<1+>
LogK: -18.57 ± 0.09         LogK°I=0 (Conversion to I = 0):   -18.78         LogK2.31 nm−2 (SSD-normalized):   -17.63
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; experimental data from batch sorption experiments [NS91] and [TEI95]; no CO2; solid concentration 1 and 20 g/L
 
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