RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Bentonite
Reference: FS06
SCM Type: NE - Non-electrostatic
Ligand: CO3<2-> - carbonate
Site Type: »X-OH
Equation: »X-OH + CO3<2-> + H<1+>  ⇔  »X-OH2-CO3<1->
LogK: 14.17        LogK°I=0 (Conversion to I = 0):   14.17         LogK2.31 nm−2 (SSD-normalized):   18.11
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L granitic water
Temperature: 298.15 K
Solid/Liquid Ratio: 6.45 g/L
pH Range: 3.5-9
Ligand Concentration Range: 1E-6 mol/L
Fit Method: STAMB-2003
Comment: m/V also 3.51g/L
original equation in the study: »X-OH2<1+> + CO3<2-> = »X-OH2-CO3<1-> with log K = 6.38 [SVSBC98] (»XOH + H<1+> = »XOH2<1+> with log K = 7.79 ± 0.29)
mistake in table 3: exchanged log KS3 and log KS4 values
 
1 data sets were retrieved