TY - GEN
T1 - Reactivity of Fe III oxyhydroxides with Fe II in batch and dynamic flow systems
AU - Usman, M.
AU - Hanna, K.
AU - Abdelmoula, M.
AU - Ruby, C.
AU - Faure, P.
PY - 2010
Y1 - 2010
N2 - Ferrihydrite is a poorly crystallized mineral and one of the most abundant iron minerals found in soils and sediments. The mineralogical transformation of ferrihydrite into Fe II bearing minerals represents a potential way to improve the soil self-remediation capacity. Indeed, reduction by Fe II may be a significant abiotic pathway in the natural attenuation of environmental contaminants including organic and inorganic pollutants. The aim of this laboratory study was to investigate the Fe II induced mineralogical transformations of three matrices: ferrihydrite, ferrihydrite-rich sand and a pristine soil under static batch and flow through conditions. Since sorbed or structural FeII is more reactive than minerals bearing only Fe III to promote the remediation of various soil pollutants, generation of Fe II bearing minerals in soil-packed columns was optimized. The starting and resulting solids were characterized by X-ray diffraction (XRD), Mössbauer spectrometry, Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM).
AB - Ferrihydrite is a poorly crystallized mineral and one of the most abundant iron minerals found in soils and sediments. The mineralogical transformation of ferrihydrite into Fe II bearing minerals represents a potential way to improve the soil self-remediation capacity. Indeed, reduction by Fe II may be a significant abiotic pathway in the natural attenuation of environmental contaminants including organic and inorganic pollutants. The aim of this laboratory study was to investigate the Fe II induced mineralogical transformations of three matrices: ferrihydrite, ferrihydrite-rich sand and a pristine soil under static batch and flow through conditions. Since sorbed or structural FeII is more reactive than minerals bearing only Fe III to promote the remediation of various soil pollutants, generation of Fe II bearing minerals in soil-packed columns was optimized. The starting and resulting solids were characterized by X-ray diffraction (XRD), Mössbauer spectrometry, Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM).
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M3 - Conference contribution
AN - SCOPUS:84860201676
SN - 9780415604260
T3 - Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
SP - 677
EP - 680
BT - Water-Rock Interaction - Proceedings of the 13th International Conference on Water-Rock Interaction, WRI-13
T2 - 13th International Conference on Water-Rock Interaction, WRI-13
Y2 - 16 August 2010 through 20 August 2010
ER -