Adsorption of radionuclide thorium by graphene oxide aerogels from aqueous solution
10.3760/cma.j.issn.0254-5098.2020.05.012
- VernacularTitle:石墨烯气凝胶对水中放射性元素钍的吸附特性研究
- Author:
Zhenyu WU
1
;
Zhongwen WANG
;
Yun WANG
Author Information
1. 中国原子能科学研究院，北京 102413（现在江西省职业病防治研究院，南昌 330006）
- From:
Chinese Journal of Radiological Medicine and Protection
2020;40(5):397-401
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To study the characteristics of thorium adsorption onto graphene oxide aerogel (GO-A).Method:GO-A was prepared using hydrothermal reduction assembly method and characterized using scanning electron microscopy (SEM) and Fourier infrared spectroscopy (FT-IR) to investigate its adsorption performance, including the effects of solution pH, adsorption time, initial thorium concentration, and temperature.Results:The maximum adsorption capacity of thorium onto GO-A was 85.8 mg/g under the experimental conditions of pH 3.0, GO-A 20 mg, solution volume 25 ml, and oscillation for 4 h at 25℃.Conclusions:The preparation method of GO-A has a high thorium adsorption capacity owing to being simple, environmental benign, convenient for solid-liquid separation. This result will provide new method and technologies for the treatment of thorium-containing radioactive wastewater and the pre-treatment of samples for environmental monitoring.
