RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Kaolinite
Reference: GG88b
SCM Type: CC - Constant Capacitance
Ligand: AsO4<3-> - arsenate
Site Type: »Al-OH
Equation: »Al-OH + AsO4<3-> + 3 H<1+>  ⇔  »Al-H2AsO4 + H2O
LogK: 31.66        LogK°I=0 (Conversion to I = 0):   32.94         LogK2.31 nm−2 (SSD-normalized):   34.74
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Temperature: 296.15 K
Fit Method: FITEQL
Comment: optimizing of all logK while pK were constant; temperature 23+-1°C; check equation & coefficients; original reaction equation in the study: »Al-OH + H3AsO4 = »Al-H2AsO4 + H2O with logK = 11.04, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03]
 
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