RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results


Surface Complex Formation Data:

Mineral: Goethite
Reference: DH03
SCM Type: DDL - Diffuse Double Layer
Ligand: AsO4<3-> - arsenate
Site Type: »Fe-OH
Equation: »Fe-OH + AsO4<3-> + 3 H<1+>  ⇔  »FeH2AsO4 + H2O
LogK: 31.0        LogK°I=0 (Conversion to I = 0):   31.00         LogK2.31 nm−2 (SSD-normalized):   31.94
Experiment: Batch Sorption Experiments
Ionic Strength: 0.0 mol/L NaClO4
Temperature: 296.15 K
Solid/Liquid Ratio: 0.5 g/L
pH Range: 4-10
Ligand Concentration Range: 1E-5 - 1E-4 mol/L
Fit Method: FITEQL
Comment: As/Fe ratio 2E-3 - 1.8E-2; experiments in 0.01M NaClO4; also sorption isotherm at pH=4+-0.1; temperature 23+-0.4°C
 
1 data sets were retrieved