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Combined decontamination processes for wastes containing PCBs.

Frantisek Kastánek·Petr Kastánek
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Abstract

This project has focused on the development of a complex assembly of mutually corresponding technological units: a low temperature thermal process for the desorption of PCBs and other organics from soils and other contaminated solid wastes; the extraction of PCBs from soils by an ecological friendly aqueous solution of selected surfactants; the chemical decontamination of PCBs in oils and in-oil-in-water emulsions by metallic sodium and potassium in polyethylene glycols in the presence of aluminum powder; the modified alkaline catalyzed chemical decontamination of PCBs in oil-in-water dispersions in a solid-state reactor (in a film of reacting emulsion on solid carriers); and the breakdown of PCBs in aqueous emulsions with activated hydroxyl radicals enhanced by UV radiation. The processes operate in a closed loop configuration with effluents circulating among the process unit. These technologies have been verified at laboratory and pilot-plant scales.

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DecontaminationEnvironmental PollutantsEnvironmental PollutionHalogensHydroxyl RadicalPolychlorinated BiphenylsSodiumTemperatureWaterWater Pollutants, ChemicalEvaluation StudyJournal ArticleResearch Support, Non-U.S. Gov't

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Frantisek Kastánek, Petr Kastánek. 2005-01-31. Combined decontamination processes for wastes containing PCBs.. https://doi.org/10.1016/j.jhazmat.2004.09.026

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