At a Glance
Microbes metabolize contaminants to survive and grow
Chlorinated VOCs, pesticides, explosives, hexavalent chromium
Treats high to low concentrations
Longer treatment time
Every 1-3 years, as needed
Single application common
Enhanced Anaerobic Bioremediation Overview
Enhanced anaerobic bioremediation is the practice of adding hydrogen to soil and groundwater to increase the number and vitality of indigenous microorganisms performing anaerobic bioremediation on any anaerobically degradable compound. Anaerobic bioremediation of chlorinated solvents, a process also known as reductive dechlorination, is the biologically mediated process by which chlorinated hydrocarbons are degraded under anoxic or anaerobic conditions. During this naturally occurring process, anaerobic microbes substitute hydrogen for chlorine on chlorinated contaminant molecules, thus dechlorinating the compound. Complete reductive dechlorination results in the chlorinated compounds being transformed to non-toxic, dissolved gases such as ethene and ethane.
Reductive dechlorination typically proceeds at very slow, unstable rates. The use of an electron donor such as 3-D Microemulsion or Hydrogen Release Compound (HRC®) can increase the rates of reductive dechlorination up to several orders of magnitude. Under the influence of staged-release hydrogen through 3-D Microemulsion or HRC, the reductive dechlorination process can be sustained for periods of up to 2-5 years depending on subsurface conditions.
Enhanced anaerobic bioremediation is most commonly used for the treatment of chlorinated groundwater contaminants such as industrial degreasing agents like tetrachloroethylene, trichloroethylene, trichloroethane, carbon tetrachloride, certain pesticides/herbicides, nitro-aromatic explosives, hexavalent chromium, and chlorinated fluorocarbons.
REGENESIS welcomes the opportunity to provide you and your team with the tools you need to successfully plan and execute your next enhanced anaerobic bioremediation project.
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