RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Kaolinite
Reference: MBLBK15
SCM Type: NE - Non-electrostatic
Ligand: PuO2<2+> - plutonyl(VI)
Site Type: »X-OH
Equation: »X-OH + PuO2<2+> + 2 H2O  ⇔  »X-O-PuO2(OH)2<1-> + 3 H<1+>
LogK: -14.5        LogK°I=0 (Conversion to I = 0):   -14.39         LogK2.31 nm−2 (SSD-normalized):   -14.91
Experiment: Batch Sorption Experiments
Ionic Strength: 0.1 mol/L NaClO4
Solid/Liquid Ratio: 4.0 g/L
Ligand Concentration Range: 1E-6 mol/L
Fit Method: PHREEQC
Comment: U(VI) literature sorption data are used as analogues for the corresponding Pu redox state, here: Krepelova 2007 (see article); absence (I = 0.1 M NaClO4) and presence (I = 0.01 NaClO4) of CO2;
also exchange constants given:
3 X-Na + Pu3+ = X3-Pu + Na+ with log K = 1 and
X-Na + H+ = X-H + Na+ with log K = −1 (from [THB08])
 
1 data sets were retrieved