竹材不同部位及炭化温度对竹炭吸附性能及远红外发射率影响的研究

The Effects of Different Bamboo Materials and Carbonization Temperature on the Adsorption Properties and Far-infrared Emission Rate of Bamboo Charcoal

对竹材炭化后不同部位炭材料进行了碘吸附性能、亚甲蓝吸附性能、比表面积、远红外发射率测定。结果表明,竹蒲炭碘吸附性能最优,竹片炭其次,竹节炭最差。炭化温度对竹炭吸附性能影响较大,炭化温度越高炭的吸附性能越好。比表面积测定结果也表明在900℃炭化条件下,竹蒲炭比表面积和孔容分别达357.674 m2·g-1和0.295 m3·g-1。亚甲蓝测定结果显示,在700℃及以下炭化条件下,竹蒲炭亚甲蓝吸附性能是最优,竹节炭亚甲蓝吸附性能是最差。而在900℃炭化条件,竹片炭亚甲蓝吸附性能是最优。在所有测试样品中700℃炭化条件下竹蒲炭亚甲蓝吸附性能是大。所有竹炭样品远红处发射率均在0.90以上。

The iodine adsorption capacity, methylene blue adsorption capacity, BET surface area and far-infrared emission rate of the bamboo charcoals made of various bamboo parts, i. e. stumps,internodes and nodes, under various carbonization temperatures, were measured. The results showed that the iodine adsorption capacity of the bamboo-stump charcoal was the best and that of the bamboo-node charcoal was the worst. The iodine adsorption capacity was affected by carbonization temperature, the higher the carbonization temperature was, the better the bamboo charcoal adsorbed. At 900 ℃ carbonization temperature, the BET surface area and pore volume of bamboo-stump charcoal were 357. 674 m2 . g-1 and 0. 295 m3.g-1 respectively. At 700℃ carbonization temperature, the methylene blue adsorption capacity of the bamboo-stump charcoal was the best 900℃ carbonization temperature, the and that of bamboo-node charcoal was the worst. At methylene blue adsorption capacity of the bamboo- internode charcoal made was the best. Overall, the methylene blue adsorption of the bamboo- stump charcoal carbonizing at 700℃ was the highest. The far-infrared emission rates of all bamboo charcoal samples were higher than 0.90.