Abstract
Abstract The potential for use of electric arc furnace (EAF) dusts as Fe and Zn supplements in Canadian agriculture was considered. EAF dusts contain a variety of toxic elements whose concentrations are regulated in feedstuff and fertilizer. Calculations with data for typical dusts containing 1% and 15.4% Zn indicated that neither would be satisfactory sources of Fe and Zn for feedstuff and that only the 15.4% Zn material would be a satisfactory source of Zn for fertilizer manufacture. Lead and Cd are the toxic elements that would most limit the use of EAF dust for fertilizer manufacture. Both dusts contained >3% Fe and might be satisfactory sources of Fe for fertilizer manufacture, however, Fe supplementation of Canadian soils is not necessary for agricultural crop production.
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