Abstract: Anew method of treating nitric oxide (NO) was reported in this paper. The method adopted a microwave-carbon reduction technique without using any catalyst. The ef-fects of gas flow rate, reaction temperature, microwave power and microwave applying time on the reduction reaction between the activated carbon and NOwere discussed. The reaction efficiency of transforming NOinto N₂ and CO₂ in a way of applying microwave continuously was compared with that of applying microwave intermittently. The results indicated that the effects of microwave power, type of reactor and temperature-raising rate on reaction efficien-cy are significant. The reaction efficiency can be up to 98% when the microwave was applied continuously and the reaction products were examined.

Key words: Microwave radiation, Char, Reduction technique, Nitrogen oxide