To provide a method capable of safely dehalogenating and detoxifying a large quantity of a hardly decomposable halogenated organic compound such as PCB (polychlorobiphenyls) in a short time and putting to practical use at a lower cost.
This method for decomposing the hardly decomposable halogenated organic compound is to irradiate a microwave to the hardly decomposable halogenated organic compound such as the PCB in the presence of an alkaline compound, an inorganic catalyst and an organic hydrogen donor. For the alkaline compound, caustic soda, caustic potash, a sodium alkoxide, a potassium alkoxide, calcium hydroxide, or the like, is used. For the inorganic catalyst, a metal-carrying complex metal oxide, a carbon crystalline compound, a metal-carrying carbon compound, a metal oxide, or the like, is used. For the organic hydrogen donor, a heterocyclic compound, an amine compound, an alcoholic compound, a ketonic compound, a cycloaliphatic compound, or the like, is used.
AMANO KOJI
OGAWA HITOSHI
