RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Montmorillonite
Reference:	KBBBM21
SCM Type:	NE - Non-electrostatic
Ligand:	Ba<2+> - barium
Site Type:	»X(w2)-OH
Equation:	»X(w2)-OH + Ba<2+> ⇔ »X(w2)-O-Ba<1+> + H<1+>
LogK:	-5.0
Experiment:	Batch Sorption Experiments
Ionic Strength:	NaCl
Temperature:	294.15 K
pH Range:	3 - 10
Ligand Concentration Range:	3.3E-8 - 3.9E-8; 4.3E-8 - 3.7E-8 mol/L
Fit Method:	MINEQL
Comment:	I = 0.03 and 0.3 M; S/L ratio: 2.91 and 2.96; in case pH is below 8 and ionic strength is below 0.1 M, the adsorption by cation exchange (also modeled in the study) is dominant and the contribution by surface complexation becomes negligible

1 data sets were retrieved