RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Surface Complex Formation Data:

Mineral: Ferrihydrite
Reference: LPSG17
SCM Type: CDM - (CD-)MUSIC
Ligand: VO4<3-> - vanadate
Site Type: »Fe-singly
Equation: 2 »Fe-OH<0.5-> + VO4<3-> + 3 H<1+>  ⇔  (»Fe-O)2-VOOH<1-> + 2 H2O
LogK: 36.87        LogK°I=0 (Conversion to I = 0):   37.41         LogK2.31 nm−2 (SSD-normalized):   37.02
Experiment: Batch Sorption Experiments
Ionic Strength: 0.01 mol/L NaNO3
pH Range: 3 - 10.5
Ligand Concentration Range: 5E-6; 5E-5 mol/L
Fit Method: MINTEQ
Comment: surface charging parameters of [TSPG13]; 0.3, 1, 3 mM Fe; original equation in the study: 2 »Fe-OH<0.5-> + HVO4<2-> + 2 H<1+> = (»Fe-O)2-VOOH<1-> + 2 H2O with logK = 23.20 (VO4<3-> + H<1+> = HVO4<2->, log K = 13.67 [PS04b])
 
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