Successful In Situ Remediation in Low Permeability CL-Out bioremediation of groundwater in clay soils reduced concentrations of PCE and TCE at a former dry cleaners in Moline, Illinois. In just over 2 weeks after injection, CL-Out microbes cut the contaminant concentrations in half. PCE from 62.2 to 25.6 mg/L TCE from 11.2 to 6.0 mg/L […]
How CL-Out Aerobic PCE Bioremediation Works A CL-Out bioremediation pilot study confirmed that aerobic PCE cometabolism removed dry cleaning solvent contamination from ground water. The pilot study was located at a former dry cleaners, where the PCE in ground water was 27 parts per billion (ppb). Bioaugmentation introduced CL-Out microbes and dextrose as the metabolic […]
Cost-effective Bioremediation of a Dry Cleaners Quickly Removed Contamination Historical operations at a Houston area dry cleaners resulted in a chlorinated solvent plume (perchloroethylene or PCE) in the shallow ground water. Permeable shallow soil at the site allowed rapid vertical migration at the source and lateral migration in the shallow ground water. This migration resulted […]
CL-Out aerobic bioremediation PCE and TCE is a sustainable process for soil and ground water remediation. As these compounds are not directly metabolized under aerobic conditions, the competitive advantage goes to the CL-Out organisms that cometabolize them. While utilizing a sugar substrate, the CL-Out organisms produce mono- and dioxygenase enzymes that bridge the carbon bond […]
A history of spills and/or releases at two adjacent dry cleaning facilities near Houston, TX, resulted in significant soil and shallow groundwater contamination with PCE and daughter products. Soil was relatively permeable, with rapid groundwater flow beneath the site. A long, narrow, off-site plume extended beneath a residential neighborhood. Chemical oxidation was employed initially with […]
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