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A new method of auxiliary purification for motor vehicle exhaust.
Environmental Technology 2018 July
As a result of the limitations of current purification technologies, purification efficiency is relatively low, particularly during startup or in the case of other abnormal automobile exhaust. Therefore, a new method of auxiliary purification is proposed in this paper. The acidic solution of potassium permanganate can oxidize carbon monoxide, nitrogen oxides and sulfur dioxide at relatively high temperatures and the alkaline solution of potassium permanganate can selectively absorb nitrogen oxide and sulfur dioxide. Therefore, we carried out the experiment using a solution of potassium permanganate and sulfuric acid as well as a solution of sodium carbonate and potassium permanganate, which served as the reagents for the auxiliary purification. The results of the test showed that after auxiliary purification by the acidic solution of potassium permanganate and the alkaline solution of potassium permanganate, the concentrations of carbon monoxide, hydrocarbons, nitrogen oxides and solid particles in the emissions were considerably lower than the concentrations prior to purification. It is possible to reduce the motor vehicle exhaust by the auxiliary purification of the solutions.
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