RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: GS84a
SCM Type: CC - Constant Capacitance
Ligand: PO4<3-> - phosphate
Site Type: »Fe-OH
Equation: »Fe-OH + PO4<3-> + 2 H<1+>  ⇔  »Fe-HPO4<1-> + H2O
LogK: 25.922         LogK2.31 nm−2 (SSD-normalized):  
Experiment: Sorption Isotherms
Ionic Strength: 1.0 mol/L NaClO4
pH Range: 7
Fit Method: FITEQL
Comment: adsorption isotherm data from [RMS77], solid called \"iron oxide gel\"; FITEQL/MICROQL; original equation: »Fe-OH + H3PO4 = »Fe-HPO4<1-> + H2O + H<1+> with log K = 4.22, formation constant in aqueous solution: PO4<3-> + 3H<1+> = H3PO4 logK = 21.702 [GFFGN03]
 
1 data sets were retrieved