RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Goethite
Reference: SHV08
SCM Type: CDM - (CD-)MUSIC
Ligand: AsO4<3-> - arsenate
Site Type: »Fe-singly
Equation: 2 »Fe-OH<0.5-> + AsO4<3-> + 3 H<1+>  ⇔  (»Fe-O)2<0.42->AsOOH<0.58-> + 2 H2O
LogK: 33.0 ± 0.21         LogK2.31 nm−2 (SSD-normalized):   33.15
Experiment: Potentiometric Titration
Ionic Strength: NaNO3
Temperature: 298.15 K
Solid/Liquid Ratio: 20.0 g/L
pH Range: 3-11
Fit Method: ECOSAT
Comment: logK values have been optimized in the present study by fitting all monocomponent adsorption data of Fig. 11 (R² = 0.97 and N = 140 data points); the given charge distribution values (delta z0; delta z1) are from [SHV06b]
 
1 data sets were retrieved