Modeling the adsorption of mercury(II) on (hydr)oxides. 2: {alpha}-FeOOH (goethite) and amorphous silica
- CNRS-Univ. Henri Poincare, Villers-les-Nancy (France). Lab. de Chimie Physique pour l`Environnement
- Univ. Libre de Bruxelles, Brussels (Belgium). Service de Chimie Analytique
- Univ. Louis Pasteur-CNRS, Strasbourg (France). Inst. de Mecanique des Fluides
The surface complexation model is used to describe sorption experiments of inorganic mercury(II) in the presence of an amorphous silica, Aerosil 200, or an iron (hydr)oxide, the goethite {alpha}-FeOOH (Bayferrox 910). In the simulations, one assumes the formation of a monodentate surface complex {triple_bond}S{single_bond}OHgOH and {triple_bond}S{single_bond}OHgCl, when chlorides are present in solution. Participation of the complex {triple_bond}S{single_bond}OHgCl has been especially evidenced. Comparisons with other data from the literature have been made to investigate the influence of the nature of the oxide on the mechanism of mercury(II) adsorption. X-ray photoelectron spectroscopy was used to characterize the surface of the (hydr)oxides prior to adsorption and to observe when possible the mercury surface compounds.
- OSTI ID:
- 680103
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 215; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
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