Novel Cosolvent Flooding Formulations for Subsurface Environmental Remediation

Case # 122

Inventors: Ron Falta, Eberhard Roeder, Cindy M. Lee, Scott E. Brame
Summary: Non-aqueous phase liquid (NAPL) contamination of aquifers is a widespread problem. Dense NAPL poses a special problem as it may migrate downward under the influence of gravity. The use of cosolvent flooding of the contaminated aquifer has been an effective method of facilitating the removal of NAPL. However, the cosolvent is usually buoyant in water, and sometimes cannot effectively contact dense NAPL which is pooled near the bottom of an aquifer. Clemson University researchers have developed a method of blending cosolvents which enables the buoyancy of the cosolvent to be accurately adjusted.
Applications: This technology allows the solution density to be tailored to the specific site remediation system including both contaminant mobilization and enhanced dissolution designs. The flooding solution may also contain special additives, which have the property of partitioning into, and reducing the density of dense NAPLs themselves. These new formulations will make cosolvents in much more attractive for NAPL remediation projects.
Patent Status: Since a patent has not been issued, detailed information must be provided under a confidential disclosure agreement. Please download the confidential disclosure form and mail the completed form to:
Vincie Albritton, Marketing Director
Clemson University
223 Brackett Hall
Clemson, SC 29634-5705
Phone: 864-656-5708
Fax: 864-656-0474
Licensing: Our interest is to partner with a company to further develop and/or license the technology. For more information about this technology, please contact:
Vincie Albritton, Office of Technology Transfer
Phone: (864) 656-5708
Fax: (864) 656-0474
Janet Dillon, Project Administrator
Phone: (864) 656-4237
Fax: (864) 656-0474
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