RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Birnessite
Reference: MD01b
SCM Type: NE - Non-electrostatic
Ligand: Cd<2+> - cadmium
Site Type: Mn
Equation: »Mn-OH + Cd<2+>  ⇔  »Mn-O-Cd<1+> + H<1+>
LogK: 8.84        LogK°I=0 (Conversion to I = 0):   8.97
Experiment: Potentiometric Titration
Ionic Strength: 0.01 mol/L KNO3
pH Range: 8
Fit Method:
Comment: 0.001M HCO3- in equilibrium with 0.05% CO2 in N2; maximum adsorption capacity for Cd 0.026 mol/kg; Na-rich birnessite described by [SMD97]; voltammetry; no site density and surface protolysis data
 
1 data sets were retrieved