碳纳米管小球型材吸附铀酰离子的性能研究  

Research on the adsorption capacity of nanotube spheres for uranyl ions

作　　者：李丽丽[1,2] 陈慧[1] 张业新[1] 张亚杰[1] 韩磊[2] 

机构地区：[1]中国科学院宁波材料技术与工程研究所,浙江宁波315201 [2]宁波大学材料科学与化学工程学院,浙江宁波315211

出　　处：《工业水处理》2017年第3期34-36,共3页Industrial Water Treatment

基　　金：国家自然科学基金项目(51422212;21307142);宁波市科技计划项目(2015A610248;2015B11003;2014D10004)

摘　　要：以聚苯乙烯树脂小球为前驱体,采用气相沉积法合成了碳纳米管小球型材,将其应用于对放射性废水中铀酰离子的吸附。测试结果显示,当pH处于4~8时,吸附量达到最大值。铀酰离子的吸附为Langmuir单层吸附,理论最大吸附量为73.42 mg/g。同时吸附动力学分析表明,该吸附为拟二级化学吸附。Using polystyrene resin spheres as the precursor, a kind of carbon nanotube （CNT）sphere has been synthesized by vapor deposition method, which can be applied to the adsorption of uranyl ions in radioactive wastewater. The test results show that when the pH is in the range of 4-8, the adsorption capacity for uranyl ions reaches the maximum value. The adsorption for uranyl ions is Langmuir monolayer adsorption with the theoretically maximal adsorption capacity of 73.42 mg/g. Meanwhile, the analysis of adsorption kinetics demonstrates that the adsorption is pseudo-second-order kinetics.

关 键 词：碳纳米管小球 铀酰离子 吸附 放射性废水处理 

分 类 号：X703[环境科学与工程—环境工程]