RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Montmorillonite
Reference:	BB99a
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:	-3.3 ± 0.2 LogK°_I=0 (Conversion to I = 0): -3.22
Experiment:	Sorption Isotherms
Ionic Strength:	0.0033 mol/L Ca(NO3)2
Solid/Liquid Ratio:	1.13 g/L
pH Range:	7
Ligand Concentration Range:	6E-9 - 2E-3 mol/L
Fit Method:	MINSORB
Comment:	Ca-Montmorillonite; MINSORB code (2-site protolysis no electrostatics surface complexation and cation exchange model developed and incorporated into MINEQL); fixed parameters: Zn inventory 1E-3mol/kg, selectivity coefficient for cation exchange Ca-Ni=0.8, logK for Ni on strong sites=-0.4

1 data sets were retrieved