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Magnetite (Fe3O4) is a zerovalent iron corrosion product; it is also formed in natural soil and sediment. Sorption of arsenate (As(V)) and arsenite (As(III)) on magnetite is an important process of arsenic removal from groundwater using zerovalent iron-based permeable reactive barrier (PRB) technology and natural attenuation. We tested eight magnetite samples (one from Phoenix Environmental Ltd, one...
Recent research has shown that carbonaceous solid materials and zerovalent iron (Fe 0 ) may potentially be used as media in permeable reactive barriers (PRBs) to degrade groundwater nitrate via heterotrophic denitrification in the solid carbon system, and via abiotic reduction and autotrophic denitrification in the Fe 0 system. Questions arise as whether the more expensive Fe 0...
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