期刊论文

Adsorption properties of polyethyleneimine modified magnetic yeast composites for uranium (VI)

Li, Shiyou(lsy730723@163.com)

中文

复合材料学报

1000-3851

2021

38

9

3065-3075

10.13801/j.cnki.fhclxb.20201112.002

国家自然科学基金（51904155）； 2020年度湖南省大学生创新创业训练计划项目（S202010555118）；

本校为第一机构

为了高效便捷地处理放射性废水,制备了聚乙烯亚胺（PEI）改性磁性酵母（MY）复合生物材料（MY@SiO2-PEI）,并将其用于铀（Ⅵ）的去除。采用SEM、FTIR、Zeta电位及XPS对材料进行表征,运用Visual MINTEQ模拟不同条件下U（Ⅵ）形态分布,通过研究不同溶液pH、温度、反应时间、离子强度,阴离子(CO32-、PO43-)及不同U（Ⅵ）初始质量浓度等方面,考察不同因素对MY@SiO2-PEI吸附U（Ⅵ）的性能影响,并对MY@SiO2-PEI的循环利用能力进行研究。结果表明,MY@SiO2-PEI对U（Ⅵ）的吸附表现出强pH依赖性,离子强度对吸附效果无显著干扰,说明反应主要受表面络合作用控制。FTIR、XPS及Zeta电位分析发现促使U（Ⅵ）吸...

In order to efficiently and conveniently treat radioactive wastewater, polyethyleneimine (PEI) modified magnetic yeast(MY) composite biological material(MY@SiO2-PEI) was prepared and used for the removal of uranium (VI).The material was characterized by SEM, FTIR, Zeta potential and XPS, the U(VI) morphology distribution under different conditions was simulated by Visual MINTEQ, the different solution pH, temperature, reaction time, ionic strength, anion interference(CO32−, PO43−) and different U(VI) in terms of initial mass solubility were a...