磷酸活化甘蔗叶制备活性炭的工艺研究  

Study of Preparation Technology of Sugarcane Leaves Based Activated Carbon by Phosphoric Acid Activation

作　　者：艾浩[1] 蒙冕武[1] 刘庆业[1] 魏跃林[1] 康彩艳[1] 黄思玉[1] 

机构地区：[1]广西师范大学环境与资源学院广西环境工程与保护评价重点实验室珍稀濒危动植物生态与环境保护省部共建教育部重点实验室,桂林541004

出　　处：《材料导报》2013年第6期112-114,127,共4页Materials Reports

基　　金：广西自然科学基金项目(2011GXNSFA018027);广西教育厅科研项目(200807LX042);珍稀濒危动植物生态与环境保护省部共建教育部重点实验室研究基金(桂科能1101Z006);广西环境工程与保护评价重点实验室主任基金(桂科能0702Z020);广西环境工程与保护重点实验室平台建设经费(09-007-07);广西研究生创新计划项目(YCSZ2012057)

摘　　要：采用正交试验方法系统研究了活化剂、添加剂、活化温度、活化时间等因素对磷酸活化甘蔗叶制备活性炭的得率、亚甲基蓝吸附值的影响,并利用SEM对样品进行了表征。结果表明,磷酸活化甘蔗叶制备活性炭的最佳工艺为:将甘蔗叶浸泡于6%添加剂1及1%添加剂2、体积浓度为35%的磷酸溶液中,浸泡12h后,在673K条件下活化40min,所制得的活性炭的微观孔结构排列整齐,活性炭的得率和亚甲基蓝吸附值分别为47.05%、202.50mg/g,其中亚甲基蓝吸附值为国家标准GB/T 13803.2-1999活性炭一级品的1.5倍。The influencing factors such as H3PO4 concentration, additives, activation temperature and time on the yield and methylene blue adsorption value of the sugarcane leaves based activated carbon were studied by orthogonal test, and the microstructure of the sugarcane leaves based activated carbon were characterized by scanning electron microscope （SEM）. The results show that the optimal process for preparation are obtained as following： Sugarcane leaves are infused 12 h in 35% phosphoric acid, with adding 6% addition agent 1 and 1% addition agent 2, and heated 40 min at 673K, the activated carbon has a neat micro pore structure, the yield and methylene blue adsorption value of the activated carbon are 47.05% and 202. 50 mg/g, respectively. The methylene blue adsorption value is as 1.5 times as that of activated carbon of the first grade standard in GB/T 138O3.2-1999.

关 键 词：甘蔗叶 活性炭 磷酸活化 吸附性能 

分 类 号：TQ424.1[化学工程]