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: AsO4<3-> - arsenate
Site Type: »X-OH
Equation: »X-OH + AsO4<3-> + H<1+>  ⇔  »X-AsO4<2-> + H2O
LogK: 15.87        LogK°I=0 (Conversion to I = 0):   16.94         LogK2.31 nm−2 (SSD-normalized):   20.50
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Fit Method: FITEQL
Comment: monodentate mononuclear As(V)-adsorption; original reaction equation in the study: »X-OH + H3AsO4 = »X-AsO4<2-> + 2 H<1+> + H2O with logK = -4.75, formation constant in aqueous solution: H3AsO4 = AsO4<3-> + 3H<1+> with logK = -20.62 [GFFGN03]
 
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