期刊论文

Adsorption Behavior of Uranium Based on Polyacrylonitrile/Oxidized Graphene Ammoximation Group Polymer

Xia, L.-S.

中文

核化学与放射化学

0253-9950

2018

40

3

159-165

10.7538/hhx.2018.YX.2017043

国家自然科学基金资助项目（11575078）；

本校为第一且通讯机构

合成了一种新型的具有高吸附量和较好吸附选择性的聚丙烯腈/氧化石墨烯的偕氨肟化复合材料(-AO/GO)吸附剂,采用XRD、红外光谱对-AO/GO进行了表征,通过静态吸附实验研究了pH值、固液比、吸附时间、铀溶液初始质量浓度等因素对吸附剂吸附铀的影响,并探讨了吸附过程的热力学和动力学。结果表明,吸附剂对铀的吸附量随吸附剂用量、吸附时间及铀酰离子初始浓度的增加而增加,但当这些因素达到一定值时,吸附达到平衡。在pH=5、固液比0.6g/L、吸附时间60min、铀初始质量浓度150mg/L的最佳吸附条件下, -AO/GO对铀的吸附量达237mg/g。-AO/GO对铀的吸附遵循Langmuir吸附等温线,说明 -AO/GO对铀的吸附属于单层...

A new type of polyacrylonitrile/oxidized graphene ammoximation group polymers/-AO/GO adsorbent was synthesised which had high adsorption capacity and better adsorption selectivity. It was characterized by infrared and XRD. Through static adsorption experiments, the effect of pH, solid-liquid ratio, adsorption time and initial concentration of uranium on the adsorption of uranium were studied. The thermodynamics and kinetics of adsorption process and the relevant equation for matching were also discussed. Results show that the adsorption capacit...