Continuous flow system for arsenate uptake by horticultural peat impregnated with Fe

Osama M. Rageh, Cynthia A. Coles

In the proceedings of: GeoRegina 2014: 67th Canadian Geotechnical Conference

Session: Laboratory and Field Testing

ABSTRACT: The objective of this research was to employ horticultural peat impregnated with Fe in column experiments to remove arsenic from water to a level of 10 µg/L or less. The point of zero charge and the cation exchange capacity of the peat and important elements and metals contained in the peat were determined. Batch tests revealed that the optimum Fe impregnated peat for the column studies was the peat impregnated with 0.54 M Fe. It was possible to reduce the arsenic concentration exiting the column to < 10 µg/L and to a minimum of 0.61 µg/L. During the column tests the pH increased and the leaching of Mn, Ca, Mg, Cu, Pb, and Br from the peat decreased.

RÉSUMÉ: égal ou inférieur à 10 µg/L. On a déterminé le point de la tourbe. Des essais par lots ont révélé que la valeur optimale de la tourbe imprégnée au Fe était celle qui était olonnes, le pH a augmenté et le lessivage du Mn, Ca, Mg, Cu, Pb et Br contenus dans la tourbe a diminué.

Please include this code when submitting a data update: GEO2014_266

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