RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Biotite
Reference: LPISL18
SCM Type: DDL - Diffuse Double Layer
Ligand: SeO3<2-> - selenite
Site Type: »X(w2)-OH
Equation: »X(w2)-OH + SeO3<2-> + H<1+>  ⇔  »X(w2)-OH2-SeO3<1->
LogK: 12.64
Experiment: Batch Sorption Experiments
Ionic Strength: ground water
Temperature: 295.0 K
Solid/Liquid Ratio: 50.0 g/L
pH Range: 7.83
Ligand Concentration Range: 1.66E-10 - 1E-3 mol/L
Fit Method: PHREEQC
Comment: sorption isotherms; original reaction equation: »X(w2)-OH + HSeO3<1-> = »X(w2)-OH2-SeO3<1-> log K = 4.1 (H<1+> + SeO3<2-> = HSeO3<1-> log K = 8.54 (ANDRA 2009, [EHL16])); sorption of SO4<2-> and Ca<2+> also considered, log K values taken from ANDRA 2009
 
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