Aerobic Cometabolism of TCE and 1,4-Dioxane

Field Demonstration of  CL-Out Bioremediation of TCE and 1,4-Dioxane

In a pilot study to compare aerobic cometabolism with anaerobic reductive dechlorination  to remediation TCE and 1,4-dioxane at a former industrial facility near Lakewood, New Jersey, aerobic cometabolism reduced the concentrations of both compounds while anaerobic reductive dechlorination was unsuccessful.  For aerobic cometabolism, CL-Out microbes were injected into the aquifer to a depth of 60 to 90 feet below ground.  The pilot treatment area was 500 square feet.  Monitoring wells were placed upgradient, sidegradient and downgradient of the injection point.  Ground water samples were taken on a monthly basis for 9 months.

The results showed that complete TCE mineralization, without the production of daughter products, was measured within the first month.  CL-Out bioremediation removed 80% of the TCE at 40 feet downgradient in less than three months.  CL-Out bioremediation reduced the 1,4-dioxane concentration to below detection limits at 20 and 40 feet downgradient in the first month.

Click here to view a summary case study.

 

 

1,1,1-TCA Bioremediation at an Industrial Site in Dayton, Ohio

Fast, Economical Site Cleanup

CL-Out bioremediation reduced the concentration of 1,1,1-TCA in ground water at a steel manufacturing facility in Dayton, Ohio. Following implementation of ozone treatment and high vacuum extraction for more than 2 years, the contaminant concentrations remained high.  Bioaugmentation followed up on these treatments and reduced the 1,1,1-TCA concentration very quickly.  Within 30 days of bioaugmentation, the source area contaminant concentration decreased by 80%.  After a second application, the concentration decreased from the pre-treatment concentration of 1,100 ug/L to 1.4 ug/L.  The bioaugmentation effect was observed as far as 250 feet downgradient where the concentrations decreased by more than 50%.  Click here for the full case study.

 

 

Brownfield Plan Included CL-Out Bioremediation

A brownfield plan included Cl-Out bioremediation to reduce high concentrations of TCE and other contaminants in ground water at an industrial site near Newark, New Jersey. Using a dynamic remediation plan, three applications of CL-Out microbes followed remediation progress sampling during the site preparation for construction. After reducing the maximum CVOC concentrations from over 8,000 ug/L to less than 20 ug/L, the site met the remediation goals and received a No Further Action Letter from NJDEP. For more information and a detailed case study, click here.

Aerobic Cometabolism of Chlorinated Solvents

CL-Out® aerobic cometabolism successfully remediated solvents in ground water at an operating industrial site in central New Jersey.  The manufacturing and plating facility had historical petroleum and solvent releases.

Chlorinated solvents found in the ground water in two plumes covered a combined area of about one half acre.  A mix of chlorinated solvents including 1,1,1-TCA, 1,1-DCE and PCE in low concentrations icontaminated the ground water.    The remediation goal was to reduce the mass of contamination in the ground water plume to prevent mitigate off-site risks.

After the CL-Out aerobic cometabolism, ground water concentrations in all monitoring wells decreased by more than 80%, which was sufficient to meet the remediation standards.  Click here to download a complete case study.

Fast Creosote Bioremediation Results

Bioremediation of Waste Treated Wood

Fast creosote bioremediation was recently demonstrated by a user of a custom blend of CL Solutions organisms.  The environmental consulting firm applied the microbes to finely shredded wood that had been saturated with creosote.  The initial testing results after bioaugmentation showed a reduction of the creosote concentration by  57% in just 7 days.  The concentration measured as total recoverable hydrocarbons decreased from 3,453 mg/kg to 1,497 mg/kg.