RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Montmorillonite
Reference:	BB97b
SCM Type:	NE - Non-electrostatic
Ligand:	Ni<2+> - nickel
Site Type:	»X(w)-OH
Equation:	»X(w)-OH + Ni<2+> ⇔ »X(w)-O-Ni<1+> + H<1+>
LogK:	-3.1 LogK°_I=0 (Conversion to I = 0): -2.78
Experiment:	Sorption Isotherms
Ionic Strength:	0.1 mol/L NaClO4
Solid/Liquid Ratio:	0.24 g/L
pH Range:	8.2
Ligand Concentration Range:	6E-5 - 1E-9 mol/L
Fit Method:	MINSORB
Comment:	Na-montmorillonite, MINSORB code (2-site protolysis no electrostatics surface complexation and cation exchange model developed and incorporated into MINEQL); citation in [BB99a]; fixed parameters: selectivity coefficient (I=0) for cation exchange Na-Ni=3.1, Zn inventory 1E-3mol/kg; Mn inventory 4E-4mol/kg, logK(Ni) on strong sites=-0.1; logK for first weak site

1 data sets were retrieved