RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Corundum
Reference: GS84a
SCM Type: CC - Constant Capacitance
Ligand: PO4<3-> - phosphate
Site Type: »Al-OH
Equation: »Al-OH + PO4<3-> + 3 H<1+>  ⇔  »Al-H2PO4 + H2O
LogK: 30.392        LogK°I=0 (Conversion to I = 0):   30.93         LogK2.31 nm−2 (SSD-normalized):  
Experiment: Sorption Isotherms
Ionic Strength: 0.01 mol/L NaCl
Fit Method: FITEQL
Comment: adsorption isotherm data from [CBS73], site protolysis reference [GS84] (average values from literature of various aluminium oxides); FITEQL/MICROQL; original equation: »Al-OH + H3PO4 = »Al-H2PO4 + H2O with log K = 8.69, formation constant in aqueous solution: PO4<3-> + 3H<1+> = H3PO4 logK = 21.702 [GFFGN03]
 
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