RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Montmorillonite
Reference: BDM14
SCM Type: NE - Non-electrostatic
Ligand: Ga<3+> - gallium
Site Type: »X(s)-OH
Equation: »X(s)-OH + Ga<3+> + H2O  ⇔  »X(s)-O-Ga(OH)<1+> + 2 H<1+>
LogK: -1.17        LogK°I=0 (Conversion to I = 0):   -1.17
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaClO4
Solid/Liquid Ratio: 1.0 g/L
pH Range: 3-11
Ligand Concentration Range: 6.6E-6 - 8E-5; 4E-5 mol/L
Fit Method: CHESS
Comment: SSA and equilibrium acidity constants from [MAG09a]; original equation in the article »X(s)-OH + Ga(OH)<2+> = »X(s)-O-Ga(OH)<1+> + H<1+> with logK = 1.68 (hydrolysis reactions given in table 2)
 
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