Investigation of the Removal Rate of the Formaldehyde Gas in the Air by Chlorine Dioxide Gas

This paper researches the removal rate of formaldehyde gas in the air by high-purity chlorine dioxide gas,mainly investigating the efficiency of chlorine dioxide gas concentration,reaction time and initial concentration of formaldehyde gas on the removal rate of formaldehyde.The results show that: the removal rate of formaldehyde increases with the increase of the concentration of chlorine dioxide gas;when the initial concentration of formaldehyde gas at 2.4 mg/m3 and the concentration of chlorine dioxide gas at 1.8 mg/m3,the removal rate of formaldehyde can reach 99.5%;the removal rate of formaldehyde increases with the increase of the reaction time,but the removal rate is stabilized to 99.7% after 30 mins;and the removal rate of formaldehyde increases firstly and then decreases with the increase of the initial concentration of formaldehyde.