RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Kaolinite
Reference: EPH13
SCM Type: NE - Non-electrostatic
Ligand: MoO4<2-> - molybdate
Site Type: »X(s)-OH
Equation: »X(s)-OH + MoO4<2-> + H<1+>  ⇔  »X(s)-OH2-MoO4<1->
LogK: 12.11
Experiment: Batch Sorption Experiments
Ionic Strength: ground water
Temperature: 298.15 K
pH Range: 6 - 10
Ligand Concentration Range: 5E-5 mol/L
Fit Method: PHREEQC
Comment: S/L ratio not given in the study
The only sorbing species of molybdenum were HMoO4- and MoO42-, which gave the same sorbed species.
Original equation in the study: »X(s)-OH + HMoO4<1-> = »X(s)-OH2-MoO4<1->, log K = 8.0 (ANDRA 2009: H<1+> + MoO4<2-> = HMoO4<1->, log K = 4.11)
 
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