RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: EMIBS17
SCM Type: DDL - Diffuse Double Layer
Ligand: NpO2<1+> - neptunyl(V)
Site Type: »X-OH
Equation: 2 »X-OH + NpO2<1+> + 3 H2O  ⇔  (»X-O)2-NpO2(H2O)3<1-> + 2 H<1+>
LogK: -12.29        LogK°I=0 (Conversion to I = 0):   -12.29         LogK2.31 nm−2 (SSD-normalized):   -4.50
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaClO4
pH Range: 4-11
Ligand Concentration Range: 1E-6 mol/L
Fit Method: UCODE_2005
Comment: 0.5 and 5 g/L; also ion exchange reaction: »X<1-> + NpO2<1+> = »XNpO2 with log K = 19.42; other reactions and constants from [TNOYS10] used for modelling (see article)
 
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