Patent for Perchlorate Bioremediation Granted

The US Patent Office has granted a patent for bioremediation of perchlorate-contaminated media to Michael Saul of CL Solutions, Cincinnati, Ohio and Andrew Irwin of Irwin Engineers, Natick, Massachusetts. The patent is based on the successful application of a novel approach to in situ bioremediation of nitrate and perchlorate in soil, ground water and sediments at a site in Massachusetts.  

The in situ bioremediation reduced the concentrations of perchlorate in ground water from 480 ppm to less than 1 ppm.  The ground water was  treated in unconsolidated silty clay overburden and granitic bedrock.

Soil concentrations in the source area were reduced from 1,800 mg/kg to less than 1.0 mg/kg.  

Application of in situ bioremediation saved the responsible party hundreds of thousands of dollars and years of treatment time.  More information is available  form CL Solutions at www.cl-solutions.com