Abstract
Abstract The significance of dissolved heavy metal concentrations on the initiation of methanogenesis in leachate produced from anaerobically fermenting refuse was examined. Zinc inhibited methane production at a concentration of 100 mg I−1 but lead, copper and iron were not inhibitory at concentrations typically observed in refuse derived leachate. High concentrations of VFA s as typically found in leachate were not the principal cause of inhibition. The implications of these findings for the initiation of methanogenesis in refuse are discussed.
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