甘蔗渣纤维的改性及其对水溶液中Cu^(2+)的吸附性能研究  

Modification of Bagasse Fibers and its Adsorption Properties for Cu^(2+) in Aqueous Solution

作　　者：李冲 谭慧娴 廖正福[3] LI Chong;TAN Huixian;LIAO Zhengfu(Guangdong Polytechnic of Science and Technology,Zhuhai 519090,China;Mingri HOLDINGS(Guangzhou)Co.,Ltd.,Zhuhai 510000,China;School of Materials and Energy,Guangdong University of Technology,Zhuhai 510006,China)

机构地区：[1]广东科学技术职业学院教务处,广东珠海519090 [2]明日控股(广州)有限公司,广东珠海510000 [3]广东工业大学材料与能源学院,广东珠海510006

出　　处：《化工技术与开发》2023年第3期16-20,69,共6页Technology & Development of Chemical Industry

基　　金：广东省普通高校特色创新类项目(2021KTSCX213)。

摘　　要：以甘蔗渣为原料,先经蒸汽爆破与氢氧化钠两步预处理,再经环氧化及胺化改性,制备了甘蔗渣吸附剂(A-E-SCB)。采用红外光谱、扫描电镜及X射线衍射仪,对材料的组成、微观结构及结晶性能进行了表征。将A-E-SCB用于去除水溶液中的Cu^(2+),考察了溶液pH值、吸附时间、吸附剂用量对A-E-SCB吸附性能的影响。结果表明,溶液p H值、吸附时间、吸附剂用量对吸附剂的吸附性能有较大的影响,优化条件为:p H=5、吸附剂用量为0.4g、吸附时间为90min。在优化条件下,吸附剂的最大吸附容量达到76.25mg·g^(-1),说明吸附剂A-E-SCB对水溶液中的Cu^(2+)具有较好的吸附能力,能够有效去除水溶液中的Cu^(2+)。Applied bagasse as raw material,through two-step pretreatment of steam explosion and sodium hydroxide,and then modified by epoxidation and amination,the bagasse adsorbent (A-E-SCB) was prepared.The composition,microstructure and crystalline properties of the materials were characterized by infrared spectroscopy,scanning electron microscopy and X-ray diffractometer.A-E-SCB was applied to remove Cu^(2+)in solution,and the effects of solution pH,adsorption time,and amount of adsorbent on the adsorption performance were studied.The optimized conditions were:pH=5,the amount of adsorbent was 0.4g,and the adsorption time was 90min.The maximum adsorption capacity of the adsorbent was 76.25mg/g,indicating that the adsorbent AE-SCB had a good adsorption capacity for Cu^(2+)in aqueous solution,which could effectively remove Cu^(2+)in aqueous solution.

关 键 词：甘蔗渣 环氧氯丙烷 三乙烯四胺 吸附剂 铜离子 

分 类 号：TQ352.2[化学工程]