Effects of different modification methods on NOx purification by bamboo charcoal
不同改性方式对竹炭净化气态氮氧化物效果的影响

In order to study the effects of different surface modification methods on air purification of bamboo-based carbon, the removal rate of low-concentration nitrogen oxides was determined when bamboo charcoals were modified by activating agent, microwave and ultrasonic process, respectively. Results showed that the NOx purification efficiency reduced if bamboo charcoal was treated by activating agent; while the NOx purification efficiency increased greatly if bamboo charcoal was treated by microwave and ultrasonic. BET test results showed that average aperture, micropore area and specific surface area of bamboo charcoal modified by microwave and ultrasonic increased, but those of bamboo charcoal modified by activating agent decreased.Therefore, microwave and ultrasonic process are proposed for modification of bamboo charcoal.