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

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 FeH2SiO−4, are needed to describe properly the experimental observations.
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https://hal.univ-lorraine.fr/hal-01849320
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Submitted on : Thursday, July 26, 2018 - 8:27:30 AM
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Norbert Jordan, Nicolas Marmier, Claire Lomenech, Eric Giffaut, Jean-Jacques Ehrhardt. Sorption of silicates on goethite, hematite, and magnetite: Experiments and modelling. Journal of Colloid and Interface Science, Elsevier, 2007, 312 (2), pp.224 - 229. ⟨10.1016/j.jcis.2007.03.053⟩. ⟨hal-01849320⟩

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