吸附热在竹炭吸附性能快速评测中的应用

Application of Adsorption Heat in Rapid Evaluation of Adsorption Properties of Bamboo Charcoal

通过竹炭与11种化学试剂的吸附热效应比较实验,发现11种化学试剂中吸附热效应最强的5种试剂顺序为2,2,4-三甲基正戊烷>乙二醇丁二醚>乙醇>甲醇/异丙醇。结合试剂安全性和性价比筛选出较佳的竹炭评测试剂甲醇和乙醇。通过进一步不同吸附性能竹炭样品对测试体系的影响研究发现,乙醇为供筛选试剂中最优,竹炭样品吸附性能与竹炭在乙醇中吸附热温度值间多项式回归方程为:Y=-5 10^(-6)X^2+0.015 2X+26.672,R2=0.994 7。环境温度与竹炭在乙醇吸附热间的线性回归方程为:Y=0.708 9X+15.408,R2=0.989 2。研究结果表明在对竹炭吸附性能保证一定精确测定的前提下,可通过竹炭样品在乙醇中吸附热温度值来快速评测竹炭吸附性能。

Adsorption heat of bamboo charcoal was measured with 11 reagents.The result showed that the five top reagents were 2,2,4-trimethyl pentane,ethylene glycol dibutyl ether,ethanol,methanol,isopropyl alcohol.Comparison on safety and cost,methanol and ethanol were selected for bamboo charcoal adsorption properties.The experiment demonstrated that ethanol was the best.Polynomial regression equation of bamboo charcoal adsorption property and adsorption heat values was Y=-5 10^（-6）X^2＋0.015 2X＋26.672,with correlation coefficient of 0.994 7.The equation of linear equation on environment temperature and adsorption heat of bamboo charcoal treated with ethanol was Y=0.708 9X＋15.408,with correlation coefficient of 0.989 2.The experiment concluded that the adsorption of bamboo charcoal could be rapidly evaluated by the adsorption heat of bamboo charcoal treated by ethanol.