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磁性γ-Fe_2O_3/玉米秸秆淀粉的制备及其对废水中U(VI)吸附性能

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成果类型:
期刊论文
作者:
范甲;胡世琴;魏柏;杨金辉;曾倩;...
通讯作者:
Yang, Jinhui(842893915@qq.com);Yang, Jinhui(842893915@qq.com)
作者机构:
[范甲; 胡世琴; 魏柏; 杨金辉; Zeng, Qian; 杨芳婷] College of Civil Engineering, University of South China, Hengyang
421001, China
Hunan Province Key Laboratory of Pollution Control and Resource Reuse Technology, University of South China, Hengyang
[范甲; 胡世琴; 魏柏; 杨金辉; Zeng, Qian; 杨芳婷] 421001, China
[胡世琴; 魏柏; 杨金辉] 421001, China<&wdkj&>Hunan Province Key Laboratory of Pollution Control and Resource Reuse Technology, University of South China, Hengyang
通讯机构:
[Yang, J.] C
[Yang, J.] H
Hunan Province Key Laboratory of Pollution Control and Resource Reuse Technology, China
College of Civil Engineering, China
语种:
中文
关键词:
玉米秸秆淀粉;铀;吸附性能;离子交换
关键词(英文):
Adsorption performance;Corn stalk starch;Ion exchange;Uranium;Γ-Fe2O3
期刊:
复合材料学报
ISSN:
1000-3851
年:
2022
卷:
39
期:
10
页码:
4898-4907
基金类别:
S202010555024:国家级大学生创新创业训练计划项目
机构署名:
本校为第一机构
院系归属:
土木工程学院
摘要:
随着核能发展,放射性核素铀通过各种途径流入环境,对人类的身体健康构成潜在威胁。以废弃玉米秸秆为原料自制玉米秸秆淀粉(CSS),采用共沉淀法将磁性γ-Fe_2O_3包裹在CSS表面合成磁性γ-Fe_2O_3/CSS,并用于溶液中U(VI)的吸附。考察初始pH值、投加量、时间、初始浓度、温度和共存离子等因素对γ-Fe_2O_3/CSS吸附U(VI)性能的影响,并加以分析。采用SEM、FTIR、XPS对吸附前后的磁性γ-Fe_2O_3/CSS进行表征分析,深入研究其对吸附U(VI)的技术机制。结果表明:在适宜条件下,γ-Fe_2O_3/CSS对U(VI)的最大吸附量达到214.1 mg/g。准二级动力学模型更准确地描述其吸附过程即以化学吸附为主。磁性γ-Fe_2O_3/C...
摘要(英文):
With the development of nuclear energy, the radionuclide uranium flows into the environment through various channels, posing a potential threat to human health. Using waste corn stalks as raw materials, self-made corn stalk starch (CSS) was used, and magnetic γ-Fe2O3 was wrapped on the surface of CSS by co-precipitation method to synthesize magnetic γ-Fe2O3/CSS, which was used to adsorb U(VI) in the solution. The effects of factors such as initial pH value, dosage, time, initial concentration, temperature and coexisting ions on the adsorption...

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