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Enhanced anaerobic bioremediation is the practice of adding hydrogen (an electron donor) to groundwater and/or soil to increase the number and vitality of indigenous microorganisms performing anaerobic bioremediation (reductive dechlorination) on any anaerobically degradeable compound or chlorinated contaminant. The most commonly targeted chlorinated groundwater contaminants are primarily used in industry as degreasing agents and include:
- Perchloroethylene (PCE)
- Trichloroethylene (TCE)
- Dichloroethylene (DCE)
- Vinyl Chloride (VC)
Other anaerobically degradeable compounds include: carbon tetrachloride, chloroform, methylene chloride, certain pesticides/herbicides, perchlorate, nitrate, nitroaromatic explosives (TNT, RDX), dyes and chlorofluorocarbons (CFC’s).
Reductive dechlorination is a term used to describe the widely documented, biologically mediated process by which chlorinated hydrocarbons are degraded under anoxic or aerobic conditions. During this naturally occurring process, anaerobic microbes (dehalogenators) substitute hydrogen (H) for chlorine (Cl) on chlorinated contaminant molecules, thus dechlorinating the compound.
“A& M Environmental Contracting - Moving to Clean”

Perchloroethylene (PCE)- Trichloroethylene (TCE) - Dichoroethylene (DCE) - Vinyl Chloride (VC) - Ethene
Adding Hydrogen to help enhance and speed up the natural breakdown of chlorinated contaminants
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