A pilot-plant study for destruction of PCBs in contaminated soils using fluidized bed combustion technology.
Destruction of polychlorinated biphenyls (PCBs) in contaminated soils and wastes using circulating fluidized bed combustion (CFBC) technology was studied using a pilot plant and simulated waste material. The results show that the technology is effective and particularly promising for treatment of PCB-containing materials like the toxic sludge from a large contaminated site. Destruction of the toxics in the gas phase appears to be very fast, and over 99.9999% destruction and removal efficiency can be achieved in the temperature range 875-880 degrees C. Heat transfer in the fluidized bed also appears adequate. Toxic residues in treated soil can be reduced to very low levels. Rate-controlling factors of the decontamination process are analyzed, and key issues for determination of the process conditions are discussed.
Desai
Dilip L
DL
CANMET Energy Technology Centre, Natural Resources Canada, 1 Haanel Dr., Ottawa, Ontario, Canada K1A 1M1.
Anthony
Edward J
EJ
Wang
Jinsheng
J
D052918:Environmental Restoration and Remediation / Q000379:methods*; D017745:Incineration / Q000379:methods*; D010865:Pilot Projects; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D012989:Soil Pollutants / Q000737:chemistry*
D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls