RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: amorphous Al(OH)₃
Reference: AB90b
SCM Type: CC - Constant Capacitance
Ligand: PO4<3-> - phosphate
Site Type: »Al-OH
Equation: »Al-OH + PO4<3-> + 2 H<1+>  ⇔  »Al-HPO4<1-> + H2O
LogK: 26.35        LogK°I=0 (Conversion to I = 0):   27.53         LogK2.31 nm−2 (SSD-normalized):   30.23
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaNO3
Solid/Liquid Ratio: 0.079 g/L
pH Range: 5.5-10
Ligand Concentration Range: 1E-6 mol/L
Fit Method: FITEQL
Comment: I=0.1M NaNO3 from [AB90a]; original reaction equation in the study: »Al-OH + HPO4<2-> + H<1+> = »Al-HPO4<1-> + H2O with logK = 14.0; formation constant in aqueous solution: PO4<3-> + H<+> => HPO4<2-> logK = 12.35
 
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