RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Kaolinite
Reference:	OL97
SCM Type:	CC - Constant Capacitance
Ligand:	Ni<2+> - nickel
Site Type:	»Si-OH
Equation:	»Si-OH + Ni<2+> ⇔ »Si-O-Ni<1+> + H<1+>
LogK:	-6.2
Experiment:	Batch Sorption Experiments
Ionic Strength:	NaNO3
Temperature:	298.0 K
Solid/Liquid Ratio:	20.0 g/L
pH Range:	3-10
Fit Method:	HYDRAQL
Comment:	experiments in 0.1, 0.01, and 0.001 M NaNO3, resp.; ion exchange: Na+ + X- = NaX logK=20 by assumption, H+ + X- = HX logK=22.9 [SLW87], Ni2+ + 2X- = NiX2 logK=40.8 (calculated from Na-K-exchange data of Ewin et al. (1981) and K-Ni-exchange data of Bansai (1982))

1 data sets were retrieved