RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	amorphous Silica
Reference:	CRCO08
SCM Type:	TL - Triple Layer
Ligand:	Na<1+> - sodium
Site Type:	»Si-OH
Equation:	»SiOH + Na<1+> ⇔ »SiO-Na + H<1+>
LogK:	-6.1 LogK°_I=0 (Conversion to I = 0): -6.10
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.1 mol/L NaCl
Temperature:	298.15 K
Solid/Liquid Ratio:	40.0 g/L
pH Range:	3-10
Ligand Concentration Range:	0.005-0.1 mol/L
Fit Method:	FITEQL
Comment:	also 0.005M NaCl calulated value equ. 1 according [S05] 1. »Si-O<1-> + Na<1+> = »Si-O-Na logK = 0.9 2. »Si-OH = »Si-O<1-> + H<1+> pK2 = -logK = 7.0 3. sum »Si-OH + Na<1+> = »Si-O-Na + H<1+> logK= 0.9 - 7.0 = -6.1

1 data sets were retrieved