松针炭载铈材料对罗丹明B的吸附性能研究

Adsorption Properties of Pine Needle Carbon-Cerium Materials for Rhodamine B

在氮气氛围下热解制备松针炭,采用浸渍法将硝酸铈负载到松针炭上,在300℃氛围中焙烧2 h,制得铈改性松针炭。用罗丹明B溶液模拟染料废水,分别研究松针炭和铈改性松针炭对罗丹明B的吸附效果。实验表明:加热温度为300℃、升温速率为10℃/min、加热时间为2 h时,制备的松针炭对罗丹明B的去除率为68.8%;浸渍浓度为0.02 mol/L、焙烧温度为300℃时制备的Ce/PC复合材料对罗丹明B的去除率为81.6%。松针炭经铈改性后,吸附性能大幅提高。

The pine needle charcoal was prepared by pyrolysis under a nitrogen atmosphere,and the cerium nitrate was loaded on the pine needle charcoal by the dipping method and calcined in a 300℃atmosphere for 2 hours to prepare cerium modified pine needle charcoal.Rhodamine B solution was used to simulate dye wastewater,and the adsorption effects of pine needle charcoal and cerium modified pine needle charcoal on rhodamine B were studied.The experiment show that,when the heating temperature is 300℃,the heating rate is 10℃/min,and the heating time is 2 h,the removal rate of rhodamine B by the prepared pine needle charcoal is 68.8%,and the removal rate of rhodamine B is 81.6%by the Ce/PC composite prepared at the impregnation concentration of 0.02 mol/L and calcination temperature of 300℃.After cerium modification,the adsorption performance is greatly improved.