RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Calcite
Reference:	SPJL12
SCM Type:	CDM - (CD-)MUSIC
Ligand:	PO4<3-> - phosphate
Site Type:	»Ca-OH<-2/3>
Equation:	»Ca-OH<-2/3> + PO4<3-> + 2 H<1+> ⇔ »Ca-O-PO2(OH)<-5/3> + H2O
LogK:	31.01 LogK°_I=0 (Conversion to I = 0): 31.01
Experiment:	Batch Sorption Experiments
Ionic Strength:	0.0 mol/L NaCl
Temperature:	294.15 K
Solid/Liquid Ratio:	100.0 g/L
pH Range:	7 - 8.3
Ligand Concentration Range:	1.3E-7 - 2E-5 mol/L
Fit Method:	PHREEQC
Comment:	Model A1: monodentate-mononuclear coordination (Ca-O-P-O3); original equation in the study: »Ca-OH<-2/3> + HPO4<2-> = »Ca-O-PO2(OH)<-5/3> + OH<1->, log K = 4.51±0.13 (H<1+> + PO4<3-> = HPO4<2->, log K = 12.5; H2O = H<1+> + OH<1->, log K = -14 (wateq4f))

1 data sets were retrieved