抄録
Recently, the air pollution caused by exhaust gas from automobiles is getting worse. Especially, it is very serious along arterial roads and at intersections with heavy traffic. Therefore, so far many researches have been carried out on nitrogen oxides removal systems. This time we have researched on absorptive property of nitrogen oxides and the power efficiency of this system. As a result, we found 1) the absorption of nitrogen oxides relies on the condition that water and gas are combined. 2) by changing pressure of the pump, power efficiency of nitrogen oxides removal system is improved.