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: »X-OH + Sr<2+> + NO3<1->  ⇔  »X-O-SrNO3 + H<1+>
LogK: -1.31 ± 1.05         LogK°I=0 (Conversion to I = 0):   -1.31         LogK2.31 nm−2 (SSD-normalized):   2.63
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: »XO<1-> + SrNO3<1+> = »XOSrNO3 with log K = 7.90 ± 1.05 (»XO<1-> + H<1+> = »XOH with log K = 9.81 ± 0.11; Sr<2+> + NO3<1-> = SrNO3<1+> with log K = 0.60 (Falck, W. E., Read, D., & Thomas, J. B. (1996). Chemval 2: thermodynamic database. EUR(Luxembourg).(from ThermoChimie)))
combination of surface complexation and ion exchange model
 
1 data sets were retrieved