Chemical Waste Management, Inc.

Peter S Daley

Yuval Halpern

James F Grutsch

Carl P Swanstrom

Edward G Fochtman

Albert G Plys

Milton Ader

Metal complexes and especially nickel EDTA is decomposed by adding an oxidizing agent to an aqueous solution containing metal complexes to define an oxidizable aqueous solution. The oxidizable aqueous solution is then exposed to a source of ultraviolet radiation in the range of from 185-300 nanometers for a period of time sufficient to destroy the complex portion of the metal complex. The remaining metal is recovered.

Process for destruction of metal complexes by ultraviolet irradiation

A method for economically separating chemical contaminants such as volatile organic chemicals (VOC's) and polychlorinated biphenyls (PCB's), even if the contaminants are present at low concentrations, from inert materials such as soils or sludges, comprising subjecting inert materials contaminated with chemical compounds to a temperature effective to volatilize the contaminants but below incineration temperature, with continuous removal of evolved vapors, for a period of time sufficient to effect the desire degree of separation of contaminants. The evolved vapors may be subjected to catalytic oxidation to destroy the volatilized chemical compounds.

Process and apparatus for separating organic contaminants from

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Glen Ellyn, IL, United States of America

Peter S Daley