Chlorinated Solvents SMEcl

One of a Kind Remediation Technology for Chlorinated Contaminants

The process for remediating chlorinated solvents is almost identical to that of cleaning hydrocarbons. The main difference lies in the use of a bioengineered bug utilized in consuming solvent contaminants. The SME system utilizes a proprietary, aerobic, bacteria developed at Brigham Young University to consume solvent pollutants; an industry first. The microorganism works in tandem with the SME system to eradicate chlorinated solvents from subsurface soil environments and water sources. The bacterium has no foreign genetic material, but has been modified by the deletion of the chlorine avoidance gene, allowing the bacterium to degrade chlorine as desired, but without producing hazardous by-products.

SMEcl is the only existing bioremediation technology whereby both soil and groundwater contamination due to chlorinated solvents, regardless of type (including, but not limited to TCE, PCE, TCA, VA, and both 1,2-DCE and 1,1-DCE, can be fully remediated in situ without any co-metabolite, using the spend and safety or an aerobic process the produces absolutely no hazardous by-products. This is something that has not been effectively accomplished with any other system or technology.

SME remediates LNAPLs and DNAPLs, including the following petroleum-based contaminants:

  • Perchloroethylene (PCE)
  • Trichloroethylene (TCE)
  • Trichloroethane (TCA)
  • Dichloroethenes (1,2‐DCE, 1,1‐DCE)
  • Vinyl Chloride (VC)
  • Many others

Benefits and Features of SME

One of the best benefits our system provides is a low profile. The SME system can be operated with minimal to no interruption to normal business operations. This bioremediation method provides a cost effective system of removing contamination. It even excels in crowded, confined or other difficult situations, while still allowing the business to continue operation during remediation. The non-toxic and minimal disturbance of SME makes it the preferred choice for petroleum remediation. Other advantages of our innovative SME technology include:

SMEcl Advantage

The bacterium uses the phenol hydroxylase enzyme to separate chlorine from the carbon substrate, allowing the bacterium to consume the remaining parts of the molecule. The resulting products are carbon dioxide, water, and a harmless chloride salt

Other methods may take years or decades, but SMEcl remediates sites in a matter of months

SMEcl is the only remediation bacterium that does not discriminate amongst chlorinated solvent contaminants, but degrades all chlorinated solvent contaminants in the same manner, regardless of whether the contaminant is TCE, PCE, TCA, VC, or another chlorinated solvent.

The bacterium survives the reproduces in water, even with high concentrations of chlorinated solvents, such as 1,300ppb for TCE, the concentration where TCE becomes fully soluble in water.

No co-metabolite
Unlike the recently heralded dehalococcoids and other remediation bacertia, no co-metabolite is needed for the safe degradation of the chlorinated solvents.

“The currently-used technologies to clean up sites contaminated with chlorinated solvents were developed over 25 years ago and have serious limitations. The newly modified Ralstonia Eutropha microbe from PureEnviro degrades chlorinated ethenes in a single step under aerobic conditions without producing hazardous daughter products. It requires less engineering, management, time, and cost than any other bioremediation technology available.”

Former Chief Scientist at Haley & Aldrich,
Shaw Environmental, ARCADIS and Metcalf & Eddy, Inc.

How It Works

The modified Ralstonia eutropha bacteria breaks up the carbon bond in chlorinated compounds. Resulting products are carbon dioxide, water, and a harmless chloride salt. No hazardous products are used or created.

The bacteria works under aerobic conditions, making it safer and more reliable than anaerobic bacteria which may react negatively, or die, in the presence of oxygen.