Application of Time Release Electron Acceptors and Electron Donors for Accelerated Bioremediation

摘要

Natural attenuation of groundwater contaminated with fuels or solvents provides a pragmatic and low-cost means of remediation. However, the appropriateness of the approach is often limited by rate or by unacceptable migration of plumes toward identified receptors. The microbially-mediated component of natural attenuation can be accelerated by overcoming the factors limiting microbial biodegradation processes. This presentation describes the use of slow release electron acceptor and donor compounds to overcome respiratory rate limitations of biodegradation of fuels and chlorinated solvents and the consequent acceleration of natural attenuation. Oxygen Release Compound (ORC~(~R)) is proprietary formulation of intercalated magnesium peroxide that releases oxygen slowly, for up to one year, and facilitates the aerobic degradation of a range of environmental contaminants including petroleum hydrocarbons, ether oxygenates like methyl tert-butyl ether (MTBE), certain chlorinated hydrocarbons and aromatics, and pesticides such as atrazine.