RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Kaolinite
Reference: MG97
SCM Type: CC - Constant Capacitance
Ligand: AsO3<3-> - arsenite
Site Type: »X-OH
Equation: »X-OH + AsO3<3-> + H<1+>  ⇔  »X-AsO3<2-> + H2O
LogK: 20.6        LogK°I=0 (Conversion to I = 0):   21.67         LogK2.31 nm−2 (SSD-normalized):   25.23
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Fit Method: FITEQL
Comment: monodentate mononuclear As(III)-adsorption; original reaction equation in the study: »X-OH + H3AsO3 = »X-AsO3<2-> + 2 H<1+> + H2O with logK = -14.1, formation constant in aqueous solution: H3AsO4 = AsO4<3-> + 3H<1+> with logK = -34.7 [MBK00]
 
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