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MicroCED

Microbial Based Chlorinated Ethene Destruction

Savannah River National Laboratory

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Scientists at the Savannah River National Laboratory (SRNL) have discovered a new and innovative treatment for the decontamination, detoxification, and elimination of chlorinated ethenes (CE) in the environment.  MicroCED Microbiological Based Chlorinated Ethene Destruction rapidly and completely converts CE to safe end products without production or accumulation fo toxic by-products.
Scientists at the Savannah River National Laboratory (SRNL) have discovered a new and innovative treatment for the decontamination, detoxification, and elimination of chlorinated ethenes (CE) in the environment.  MicroCED Microbiological Based Chlorinated Ethene Destruction rapidly and completely converts CE to safe end products without production or accumulation fo toxic by-products.

Technology Marketing SummaryDecades of widespread use and inappropriate disposal of chlorinated ethenes (CE) have resulted in pervasive environmental contamination at thousands of sites in the U. S. and abroad.  These compounds are potent toxicants to humans and extremely persistent in the environment.  Cost effective, reliable, and safe remediation technologies are needed to prevent, contain, and remove chloroethene contamination in the environment.  MicroCED was specifically designed as an efficient and reliable method to contain, reduce, and destroy chloroethene contaminant plumes in the subsurface environment.  Extensive testing and performance experiments have been conducted at Savannah River Site and Clemson University.DescriptionMicroCED consists of a unique mixture of naturally occurring bacteria that can completely transform lethal CEs to safe, nontoxic end products.  The treatment process involves introducing MicroCED into a contaminated subsurface environment whereby the bacteria are nourished and grow through the process of detoxification and degradation of the CEs.  The versatility of MicroCED allows for it to be used as a standalone bioremediation treatment for widespread, low level chloroethene contamination or in combination with aggressive source-zone treatment technologies.Benefits
  • rapidly converts toxic substances
  • worldwide applications
  • sensitive and efficient bio-process
  • process uses naturally occurring bacteria
  • treats chloroethenes or mixtures
  • cost effective and low maintenance
Applications and IndustriesContamination due to CEs is a global problem.  Many government, industrial and private lands within the U. S. and abroad are contaminated by chlorinated ethenes.  It is estimated that over 50,000 sites in the U. S. alone are contaminated by chlorinated ethenes.  An international market exists as well due to contamination by and accumulation of halogenated hydrocarbons affecting all industrialized countries.  As long as these pollutants continue to enter and persist in the environment there will be the need for a detoxification and remediation response.  MicroCED is that cost effective and proven response media.Patents and Patent Applications
ID Number
Title and Abstract
Primary Lab
Date
Patent 7,615,153
Patent
7,615,153
Microbial based chlorinated ethene destruction
A mixed culture of Dehalococcoides species is provided that has an ability to catalyze the complete dechlorination of polychlorinated ethenes such as PCE, TCE, cDCE, 1,1-DCE and vinyl chloride as well as halogenated ethanes such as 1,2-DCA and EDB. The mixed culture demonstrates the ability to achieve dechlorination even in the presence of high source concentrations of chlorinated ethenes.
Savannah River National Laboratory 11/10/2009
Issued
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
SRNL-L9100-2008-00557-1DevelopmentAvailable07/20/201107/20/2011

Contact SRNL About This Technology

To: Dale Haas, Commercialization Manager<dale.haas@srnl.doe.gov>