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1. Sorption of silicates on goethite, hematite, and magnetite: Experiments and modelling.

Author

Jordan, Norbert, Marmier, Nicolas, Lomenech, Claire, Giffaut, Eric, and Ehrhardt, Jean-Jacques

Subjects
*IRON ores, *ORES, *HEMATITE, *MAGNETITE
Abstract

Sorption of H4SiO4 (including experiments as a function of time, Kd measurement with different m/v ratios and sorption edges) onto different iron (hydro)oxides as goethite (α-FeOOH), hematite (α-Fe2O3), and magnetite (Fe3O4) has been studied with concentration of silicates under solubility limit. A surface complexation model has been used to account for sorption edge of silicates onto these iron oxide surfaces. It reveals that two types of surface complex namely ≡ FeH3SiO4 and ≡ FeH4SiO− 4, are needed to describe properly the experimental observations. [Copyright &y& Elsevier]

Published
2007
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