Application of a Bimetallic Treatment System (BTS) for PCB Removal from Older Structures on DoD Facilities. Cost and Performance Report
Final rept. Jan 2006-Nov 2009
NAVAL FACILITIES ENGINEERING COMMAND PORT HUENEME CA ENGINEERING SERVICE CENTER
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This project demonstrated the efficacy of a Bimetallic Treatment System BTS to remove and rapidly degrade polychlorinated biphenyls PCB found in structural coatings. The BTS technology, which consists of elemental or zero-valent magnesium ZVM coated with a small amount of palladium in a solvent solution capable of hydrogen donation, has two functions 1 to extract PCBs from weathered, decades-old coating material such as paint and 2 to degrade the extracted PCBs. Results are presented for pre-demonstration laboratory testing and field testing conducted at 1 the Vertical Integration Building VIB, Cape Canaveral, Florida and 2 Badger Army Ammunition Plant, Wisconsin. Variables evaluated in the demonstration include the substrates on which the PCB coatings have been applied i.e., metal, concrete or wood age of the coatings adhesion, appearance and substrate condition on removal of the BTS and PCB coating. Field testing included applying the treatment substrate to various surfaces with coatings containing PCBs and evaluating the removal of the PCBs from the surface and destruction of the PCB by the treatment substrate. The demonstration goal was to reach PCB concentrations below the Toxic Substances Control Act limit of 50 parts per million ppm in the paint on all structures tested. The goal was achieved but, depending on initial concentrations, multiple BTS applications were required.
- Industrial Chemistry and Chemical Processing
- Environmental Health and Safety