Degradation of polychlorinated biphenyls

Details Degradation of polychlorinated biphenyls Degradation of polychlorinated biphenyls

1989-04-21

1990-06-05

Straub, Gary P.

Mineral oils: processes and products

Refining

Halogen contaminant removal

210909, 423659, 423DIG20, 585469, C10G 1700, C07C 130

Patent

active

049311670

ABSTRACT:
Polychlorinated biphenyls are chemically degraded by contact with a Lewis acid catalyst in a non-aqueous liquid medium, in the presence of a cation which combines with the chlorines on the PCBs to form a solid chloride of the cation which will precipitate out from the liquid medium. Preferred Lewis acids are metal halides, particularly a combination of aluminum chloride and ferric chloride, and the preferred cation is potassium in the form of potassium hydroxide. The process is susceptible to both batch and continuous operation.

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