The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 2009
Filed:
Oct. 31, 2006
Bassam J. Jody, Tinley Park, IL (US);
Joseph A. Pomykala, Jr., Shorewood, IL (US);
Edward J. Daniels, Orland Park, IL (US);
Jeffrey S. Spangenberger, Plainfield, IL (US);
Bassam J. Jody, Tinley Park, IL (US);
Joseph A. Pomykala, Jr., Shorewood, IL (US);
Edward J. Daniels, Orland Park, IL (US);
Jeffrey S. Spangenberger, Plainfield, IL (US);
UChicago Argonne LLC, Chicago, IL (US);
Abstract
A process of washing plastics contaminated with polychlorinated biphenyls (PCBs) is provided to reduce the concentration of the PCBs. A two-step process includes a first washing step using a selected washing solution or solvent, such as, a non-flammable solvent, and followed by a second step using thermal desorption. The two-step process enables reducing the concentration of PCBs in polymers, such as recovered from shredder residue, for example, to as low as 0.253 PPM. One of the preferred solvents is Perchloroethylene.