RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Gibbsite
Reference:	MG96b
SCM Type:	CC - Constant Capacitance
Ligand:	AsO4<3-> - arsenate
Site Type:	»Fe-OH
Equation:	»Fe-OH + AsO4<3-> + 3 H<1+> ⇔ »Al-H2AsO4 + H2O
LogK:	14.92 LogK°_I=0 (Conversion to I = 0): 16.20
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.1 mol/L NaCl
Temperature:	296.15 K
Solid/Liquid Ratio:	2.5 g/L
pH Range:	2.5-11
Ligand Concentration Range:	2.66E-4 mol/L
Fit Method:	FITEQL
Comment:	two-site approach (monodentate and bidentate); original reaction equation in the study: »Al-OH + H3AsO4 = »Al-H2AsO4 + H2O with logK = -5.7, formation constant in aqueous solution: AsO4<3-> + 3 H<+> = H3AsO4<0> logK = 20.62 [GFFGN03]

1 data sets were retrieved