| 周鑫浩,陈九玉,唐安宇,杨毅,刘颖.碳氮结构空心管材料及其对钍离子的吸附性能研究[J].装备环境工程,2021,18(12):89-95. ZHOU Xin-hao,CHEN Jiu-yu,TANG An-yu,YANG Yi,LIU Ying.Carbon-nitrogen Structure Hollow Tube Material and its Adsorption Performance for Thorium Ions[J].Equipment Environmental Engineering,2021,18(12):89-95. |
| 碳氮结构空心管材料及其对钍离子的吸附性能研究 |
| Carbon-nitrogen Structure Hollow Tube Material and its Adsorption Performance for Thorium Ions |
| 投稿时间：2021-04-23 修订日期：2021-06-21 |
| DOI：10.7643/issn.1672-9242.2021.12.014 |
| 中文关键词: 碳氮结构 空心管 氮掺杂 钍离子 吸附中图分类号:TG146 文献标识码:A 文章编号:1672-9242(2021)12-0089-07 |
| 英文关键词:carbon-nitrogen structure hollow tube nitrogen doping thorium ion adsorption |
| 基金项目:国家自然科学基金(11205089) |
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| Author | Institution |
| ZHOU Xin-hao | School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Jiangsu Key Laboratory of Chemical Pollution Control and ResourcesReuse, Nanjing 210094, China |
| CHEN Jiu-yu | School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Jiangsu Key Laboratory of Chemical Pollution Control and ResourcesReuse, Nanjing 210094, China |
| TANG An-yu | School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Jiangsu Key Laboratory of Chemical Pollution Control and ResourcesReuse, Nanjing 210094, China |
| YANG Yi | School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Jiangsu Key Laboratory of Chemical Pollution Control and ResourcesReuse, Nanjing 210094, China |
| LIU Ying | School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;Jiangsu Key Laboratory of Chemical Pollution Control and ResourcesReuse, Nanjing 210094, China |
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| 中文摘要: |
| 目的 合成碳氮结构空心管材料，用于稀土矿山开采中放射性钍离子的吸附去除，方法 通过三聚氰胺和三聚氰酸超分子自组装，经水热碳化及高温热解，制备碳氮结构空心管材料。采用SEM、XRD等对材料进行表征。在不同热解温度和pH值下进行钍离子吸附实验，比较不同钍离子的初始浓度和吸附时间下吸附容量的差异。结果 600 ℃时，材料形貌为均匀的中空管状结构；pH=3.5，热解温度为800 ℃时，材料最大吸附容量达到133.87 mg/g，吸附过程符合Langmuir等温吸附模型且遵从准二级动力学规律。结论 碳氮结构空心管材料对钍离子具有良好的吸附效果，有望用于稀土开采过程中产生的放射性废钍离子的去除。 |
| 英文摘要: |
| This paper aims to synthesize carbon-nitrogen structure hollow tube material for the adsorption and removal of radioactive thorium ions produced in rare earth mines. Through melamine and cyanuric acid supramolecular self-assembly, carbon-nitrogen structure hollow tube material was prepared by hydrothermal carbonization and high temperature pyrolysis and analyzed by scanning electron microscopy (SEM) and X-ray diffraction (XRD). Thorium ion adsorption experiments were carried out at different pyrolysis temperatures and pH, and the difference in adsorption capacity under different initial concentrations of thorium ions and adsorption time was compared. The morphology of the material was a uniform hollow tubular structure at 600 ℃. When pH=3.5 and pyrolysis temperature is 800 ℃, the maximum adsorption capacity reached 133.87 mg/g. The adsorption process conforms to the Langmuir isotherm adsorption model and follows the Pseudo-second-order kinetics model. The carbon-nitrogen structure hollow tube material has a good adsorption effect on thorium ions, which is expected to be used in the removal of thorium ions in radioactive wastewater generated by rare earth mining. |
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