摘要
以废弃的甘蔗皮作为原材料,在476℃下炭化制备活性炭,以空气为载气的氛围中用SHMADZU DTG-60差热热重分析仪得到甘蔗皮的最佳热解温度为476℃。通过单因素试验探讨炭化甘蔗皮对铜离子Cu2+吸附的特点,结果表明,在初始浓度为160mg/L,投炭量为1g,温度为25℃的情况下反应1h,炭化甘蔗皮对Cu2+吸附效果最好,此时去除率高达97.27%。该吸附更满足Langmuir等温式,拟合参数高达0.986;准二级动力学更好地描述了该过程,拟合参数均大于0.998,以内扩散为主。
Used the abandoned sugarcane skin as a raw material,the activated carbon was prepared by direct carbonization process under 476℃.The best pyrolysis temperature of sugarcane skin was at 476℃and obtained by SHMADZU DTG-60 differential thermal-thermogravimetric analyzer.Through single factor experiment to explore the characteristics of carbonized sugarcane skin for copper ion adsorption.The results showed that when the initial concentration of 160mg/L,the carbon content of 1g,pH 4.5and temperature of 25℃reaction 1hthe adsorption effect of copper ion on the carbonized sugarcane skin was the best.At this moment the removal rate reached highest of 97.27%.The adsorption was more satisfied with Langmuir isotherm,fitting parameters was up to 0.986.Quasi secondary dynamics described the process better,fitting parameters were greater than 0.998,it was internal diffusion.
出处
《化工新型材料》
CAS
CSCD
北大核心
2017年第9期169-171,174,共4页
New Chemical Materials
基金
西昌市教育和科学技术局项目(16JSYJ04)
四川省教育厅科研项目(17ZB0402)
四川省大学生创新创业训练项目(201610628045)
关键词
炭化甘蔗皮
铜离子
吸附
carbonized sugarcane skin
copper ion
adsorption
