A method for treating a gas characterized in that a low temperature plasma
is generated in the presence of a metallic oxide oxidation catalyst, and
an apparatus for treating a gas characterized by containing a low
temperature plasma-generating unit carrying a metallic oxide oxidation
catalyst are disclosed. According to the treating method and the treating
apparatus, harmful components (such as carbon monoxide or a volatile
organic compound) in a gas to be treated can be efficiently oxidized and
rendered harmless, a foul odor may be rendered odorless, and further,
microorganisms may be removed from and reduced in the treated gas.