title: A pilot-plant study for destruction of PCBs in contaminated soils using fluidized bed combustion technology.
abstract: 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.
authors.affiliation: CANMET Energy Technology Centre, Natural Resources Canada, 1 Haanel Dr., Ottawa, Ontario, Canada K1A 1M1.
authors.forename: Dilip L
authors.initials: DL
authors.lastname: Desai
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Anthony
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Wang
mesh_terms: D052918:Environmental Restoration and Remediation / Q000379:methods*; D017745:Incineration / Q000379:methods*; D010865:Pilot Projects; D011078:Polychlorinated Biphenyls / Q000737:chemistry*; D012989:Soil Pollutants / Q000737:chemistry*
chemical_list: D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls