Bioremediation

Bioremediation is an in-situ process in which biochemical reactions destroy the contaminants. Bioremediation often relies upon the addition of substrates and/or the application of microorganisms to enhance removal of contaminants from groundwater or soil. This technology requires a thorough understanding of site geology and aquifer conditions. Bioremediation of aerobically degradable compounds may require enhancement of electron acceptors (e.g., oxygen, nitrate, sulfate) that have been depleted in the natural process. Bioremediation of anaerobically degradable compounds often requires an additional food source (e.g., sodium lactate, emulsified oil, sugar solutions) in order to deplete the natural electron acceptors and promote contaminant degradation. Bioaugmentation with site-specific microbial cultures may further enhance bioremediation. Injection permits are typically required. Microcosm studies and/or pilot studies may be required in order to determine the most appropriate injection substrate, frequency and dose for each site. next

Back

Main Location

Bioremediation