Organic mulch is a complex carbon material that is typically populated with its own consortium of microorganisms. The organisms in mulch breakdown complex insoluble organics to soluble carbon, which can then be utilized by these and other microorganisms as an electron donor for treating contaminants via reductive pathways. Mulch has advantages over other electron donors: it is cheaply available, long-lasting, and is naturally present in the environment. Over the last ...
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