SCB-<em>g</em>-MMA的固相接枝制备及其吸附性能

戈明亮; 杜明艺; 郑罗云; 周向阳; 贾志欣

doi:10.13801/j.cnki.fhclxb.20160114.002

SCB-g-MMA的固相接枝制备及其吸附性能

1.
华南理工大学机械与汽车工程学院, 广州 510640;
2.
仲恺农业工程学院化学化工学院, 广州 510225;
3.
华南理工大学材料科学与工程学院, 广州 510640

基金项目: 广东省部产学研（2013B090500085）；广州市产学研协同创新重大专项（201508010022）

详细信息

通讯作者:
周向阳,博士,副教授,硕士生导师,研究方向为高分子改性及复合材料,可生物降解材料。E-mail:zhouxyzps@163.com

中图分类号: X703.5
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出版历程
- 收稿日期: 2015-11-10
- 修回日期: 2016-01-06
- 刊出日期: 2016-11-14

Solid phase grafting preparation of SCB-g-MMA and its adsorption property

1.
School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China;
2.
College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
3.
School of Material Science and Engineering, South China University of Technology, Guangzhou 510640, China

摘要

摘要: 采用固相接枝法将甲基丙烯酸甲酯（MMA）接枝到碱处理后的甘蔗渣（SCB）表面，得到固相接枝产物甲基丙烯酸甲酯接枝甘蔗渣（SCB-g-MMA），并通过XRD、FTIR、¹³C NMR、SEM和BET（Brunauer-Emmett-Teller）测试等方法对其结构进行表征分析。将SCB-g-MMA作为亚甲基蓝（MB）的吸附剂，进行吸附性能研究。结果表明：在室温下，MB初始浓度在50~400 mg/L范围内，当吸附剂投加量大于等于10 g/L时，溶液pH范围在6~12，吸附时间超过40 min，SCB-g-MMA对MB的去除率达到99%；当吸附剂投加量为2.5 g/L时，对MB的吸附量可达97.3 mg/g。SCB-g-MMA对MB吸附动力学和吸附等温线更符合准二级动力学方程和Freundlich等温吸附模型。
- 甘蔗渣 /
- 固相接枝法 /
- 甲基丙烯酸甲酯 /
- 亚甲基蓝 /
- 吸附
Abstract: The solid phase grafting product methyl methacrylate grafting sugarcane bagasse (SCB-g-MMA) was prepared by the methyl methacrylate (MMA) grafted sugarcane bagasse (SCB) surface after alkali treatment through solid phase grafting method. And its structure was characterized and analyzed by XRD, FTIR, ¹³C NMR, SEM and Brunauer-Emmett-Teller (BET) methods etc. Then the SCB-g-MMA was applied to adsorb methylene blue (MB) and adsorption property investigation was carried out. The results show that when the initial concentration of MB is 50-400 mg/L, pH value of aqueous solution is 6-12, dosage of adsorbent is more than 10 g/L and adsorption time is more than 40 min, the removal efficiency of MB by SCB-g-MMA is 99% at room temperature. And when the dosage of adsorbent is 2.5 g/L, the adsorption capacity of MB is 97.3 mg/g. In addition, the adsorption kinetics and the adsorption isotherm of SCB-g-MMA for MB are more fitted to the pseudo-second-order kinetic equation and Freundlich isotherm adsorption model, respectively.
- sugarcane bagasse /
- solid phase grafting method /
- methyl methacrylate /
- methylene blue /
- adsorption