Polychlorinated biphenyls decontamination

Polychlorinated biphenyls—Toxicology—Congresses. 2. Polychlorinated biphenyls — Decontamination—Congresses. 3. Electric transformers-Health aspects—Congresses. I. Crine, Jean-Pierre. II. Title. III. Series. 

Norstrom, R.J. (1988). Bioaccumulation of polychlorinated biphenyls in Canadian wildlife. In J.-P. Crine (Ed.) Hazards, Decontamination and Replacement of PCBs. New York Plenum, Press. 

Metcalfe, D.E., Zukovs, G., Mackay, D., Paterson, S. (1988) Polychlorinated biphenyls (PCBs) physical and chemical property data. In Hazards, Decontamination and Replacement of PCB A Comprehensive Guide. Crine, J.P., Ed., pp. 3-33, Plenum Press, New York. 

The technology primarily treats clays because their physical and chemical properties, such as external and internal active surfaces produced by their fine crystalline structure, make them difficult to decontaminate. ARC asserts that pilot studies showed that the technology works well on perchloroethylene (PCE), xylene, phenols, and polychlorinated biphenyls (PCBs). 

Decontaksolv is a mobile autoclave/solvent extraction system for decommissioning polychlorinated biphenyl (PCB) contaminated equipment. Decontaksolv was developed and commercialized by Sanexen Environmental Services, Inc., in Canada in the 1980s. From 1985 to 1994 it was used to decontaminate 3 million kilograms of PCB-contaminated equipment. 

Thome, J.P. and Daele, Y.V. 1986. Adsorption of polychlorinated biphenyls (PCB) on chitosan and application to decontamination of polluted stream water. In Chitin in Nature and Technology (R.A.A. Muzzarelli, C. Jeuniaux, and G.W. Gooday, eds), pp. 551-554. Plenum Press, New York. 

A series of patented (1) processes have been developed for chemical decontamination of soils contaminated with halogenated aromatics, including polychlorinated dibenzo-p-dioxins (PCDD), chlorinated benzenes, polychlorinated biphenyls and similar materials. These processes allow reduction of PCDD levels to less than 1 part per billion (ppb) in as little as two hours at moderate temperatures and pressures. 

Photochemical Surface Decontamination Application to a Polychlorinated Biphenyl Spill Site... 

Thome, 1. P., and Y. Van Daele. 1986. Chitosan as a tool for the purification of waters. Adsorption of polychlorinated biphenyls on chitosan and application to decontamination of polluted stream waters. In Proceedings of the International Conference on Chitin and Chitosan, 3rd Meeting, R. A. A. Muzzarelli, C. leuniaux, and G. W. Goodway, eds. pp. 551-54, New York Plenum Press. 

Soil decontamination has developed from the small-scale superheated water extraction of PAHs, pesticides and polychlorinated biphenyls (PCBs). This has been carried out on a pilot scale and at 250 C almost complete soil clean-up is achieved in... 

To assess multiple vehicles, an in vitro decontamination technique was developed to evaluate the removal of Aroclor 1242 and polychlorinated biphenyls (PCBs). Surprisingly, PCBs would not move from the SC into water (<1 %). When soap-and-water was used, 33 % was removed, mineral oil removed 66.7 %, and ethanol removed 85 % of the skin-stored PCBs [92,161,173,174], hi an attempt to decontaminate skin exposed to Aroclor 1242 in the rhesus monkey, no differences were seen through 1 h, but from 3 to 24 h the amount removed by any decontamination solution decreased. By 24 h, only 25 % of PCBs apphed to the skin could be removed from the surface. With a mineral oil vehicle, soap-and-water removed approximately 70 % of the applied PCBs over 3 h, 50 % at 6 h, and 30 % at 24 h. However, as seen in vivo, an in vitro study suggested that ethanol, not soap-and-water, would be more efficient [152, 174]. 

Decontamination of building structures and equipment containing polychlorinated biphenyls is rapidly becoming a major concern to environmental managers in industry and government. The most costly stumbling block to this type of decontamination and the focus of more technical attention than any other aspect of building decontamination is the decontamination of concrete. 

Chemical decontamination is an alternative to thermal processing or landfilling of soils contaminated with polychlorinated dibenzo-p- dioxins (PCDD) or other aromatic halides such as chlorobenzenes or polychorinated biphenyls (PCB). Chemical decontamination, like incineration, involves changes to the chemical structure of the dioxin molecule. While chlorinated dioxins are thermally stable, they readily dechlorinate to water soluble compounds under relatively mild conditions of temperature and pressure. 

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