RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Chlorite
Reference: SMB09
SCM Type: DDL - Diffuse Double Layer
Ligand: UO2<2+> - uranyl(VI)
Site Type: »Fe-OH
Equation: 2 »Fe-OH + UO2<2+> + CO3<2->  ⇔  (»Fe-O2)-UO2CO3<2-> + 2 H<1+>
LogK: 4.29         LogK2.31 nm−2 (SSD-normalized):   6.16
Experiment: Batch Sorption Experiments
Ionic Strength: NaCl
Temperature: 298.15 K
Solid/Liquid Ratio: 15.5 g/L
pH Range: 4-10
Ligand Concentration Range: 1E-5 - 1E-4 mol/L
Fit Method: CrunchFlow
Comment: original reaction equation given in the study was: »Fe-(OH)2 + UO2<2+> + CO3<2-> = (»Fe-O2)-UO2CO3<2-> + 2 H<1+>, This reaction represents two surface hydroxyls forming an edge-sharing bidentate surface complex with the uranyl ion. An exponent of two for the activity of »Fe-OH in the mass-action equation as suggested in [B02] is used.; IS was 0.001, 0.01 and 0.1 M NaCl
 
1 data sets were retrieved