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.
出处
《工业水处理》
CAS
CSCD
北大核心
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)
关键词
碳纳米管小球
铀酰离子
吸附
放射性废水处理
carbon nanotube spheres
uranyl ions
adsorption
radioactive wastewater treatment
