RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Gibbsite
Reference: G10
SCM Type: CC - Constant Capacitance
Ligand: PO4<3-> - phosphate
Site Type: »Al-OH
Equation: »Al-OH + PO4<3-> + 2 H<1+>  ⇔  »Al-H-PO4<1-> + H2O
LogK: 24.562        LogK°I=0 (Conversion to I = 0):   25.74         LogK2.31 nm−2 (SSD-normalized):  
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaCl
Temperature: 296.15 K
Solid/Liquid Ratio: 0.8 g/L
pH Range: 3 - 11
Ligand Concentration Range: 9.69E-5 mol/L
Fit Method: FITEQL
Comment: original reaction equation in the article is given as »Al-OH + H3PO4 = »Al-H-PO4<1-> + H<1+> + H2O with logK = 2.86; thermodynamic data: logK = 21.702 for the reaction 3H<1+> + PO4<3-> = H3PO4 (GFFGN03)
 
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