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: Sr<2+> - strontium
Site Type: »X-OH
Equation: 2 »X-OH + Sr<2+>  ⇔  (»X-O)2-Sr + 2 H<1+>
LogK: -10.35 ± 1.31         LogK°I=0 (Conversion to I = 0):   -10.35         LogK2.31 nm−2 (SSD-normalized):   -2.46
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: 2»XO<1-> + Sr<2+> = (»XO)2Sr with log K = 9.27 ± 1.31 (»XO<1-> + H<1+> = »XOH with log K = 9.81 ± 0.11)
combination of surface complexation and ion exchange model
 
1 data sets were retrieved