RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: GB07
SCM Type: CDM - (CD-)MUSIC
Ligand: AsO4<3-> - arsenate
Site Type: »Fe-singly
Equation: 2 »Fe-OH<0.5-> + AsO4<3-> + 3 H<1+>  ⇔  »Fe2-O2-AsOOH<1-> + 2 H2O
LogK: 35.22 ± 0.025         LogK°I=0 (Conversion to I = 0):   36.50         LogK2.31 nm−2 (SSD-normalized):   35.37
Ionic Strength: 0.1 mol/L NaCl
Solid/Liquid Ratio: 2.0 g/L
pH Range: 3 - 11
Ligand Concentration Range: 26.7E-3 mol/L
Fit Method: FITEQL
Comment: data set from [RJL98] used for the optimization of As adsorption constants
 
1 data sets were retrieved