RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Goethite
Reference: G85
SCM Type: CC - Constant Capacitance
Ligand: PO4<3-> - phosphate
Site Type: »Fe-OH
Equation: »Fe-OH + PO4<3-> + 3 H<1+>  ⇔  »Fe-H2PO4 + H2O
LogK: 32.192         LogK2.31 nm−2 (SSD-normalized):   36.73
Experiment: Batch Sorption Experiments
Ionic Strength: NaClO4
Solid/Liquid Ratio: 4.68 g/L
pH Range: 3-12
Fit Method: FITEQL
Comment: experimental results from [H70]; FITEQL/MICROQL; original reaction equation in the study: »Fe-OH + H3PO4 = »Fe-H2PO4 + H2O with logK = 10.49, formation constant in aqueous solution: PO4<3-> + 3H<1+> = H3PO4 logK = 21.702 [GFFGN03]
 
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