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: Zn<2+> - zinc
Site Type: Mn
Equation: »Mn-OH + Zn<2+>  ⇔  »Mn-O-Zn<1+> + H<1+>
LogK: 8.58        LogK°I=0 (Conversion to I = 0):   8.71
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 Zn 0.025 mol/kg; Na-rich birnessite described by [SMD97]; voltammetry; no site density and surface protolysis data
 
1 data sets were retrieved