| 改性玉米芯吸附溶液中的铀 |
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| 引用本文： | 李小燕,刘义保,李寻,张明,刘云海.改性玉米芯吸附溶液中的铀[J].环境工程学报,2013,7(7):2429-2432. |
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| 作者姓名： | 李小燕 刘义保 李寻 张明 刘云海 |
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| 作者单位： | 1. 东华理工大学放射性地质与勘探技术国防重点学科实验室,南昌330013;中国原子能科学研究院,北京102413
2. 东华理工大学放射性地质与勘探技术国防重点学科实验室,南昌,330013 |
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| 基金项目： | 国防科工局核能开发项目，国家自然科学基金资助项目，核资源与环境省部共建国家重点实验室培育基地项目，放射性地质勘探与技术国防重点学科实验室项目 |
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| 摘 要： | 以KMnO4改性玉米芯为吸附剂来吸附溶液中的铀,并与未改性玉米芯的吸附能力进行比较。考察了玉米芯用量、溶液pH值、铀初始质量浓度以及吸附时间等因素对铀吸附效果的影响。实验结果表明,当溶液pH=5.5、改性玉米芯用量为0.12 g、未改性玉米芯用量为0.2 g、铀初始质量浓度为30 mg/L、接触时间为2.5 h时,改性玉米芯对铀的去除率为93.54%,未改性玉米芯对铀的去除率为59.68%,改性玉米芯对铀的吸附效果明显优于未改性玉米芯。
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| 关 键 词： | 高锰酸钾 改性 玉米芯 铀 吸附 |
Adsorption of uranium in aqueous solution by modified corncob |
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| Li Xiaoyan,Liu Yibao,Li Xun,Zhang Ming and Liu Yunhai.Adsorption of uranium in aqueous solution by modified corncob[J].Techniques and Equipment for Environmental Pollution Control,2013,7(7):2429-2432. |
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| Authors: | Li Xiaoyan Liu Yibao Li Xun Zhang Ming and Liu Yunhai |
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| Institution: | 1(1.Fundamental Science on Radioactive Geology and Exploration Technology Laboratory,East China Institute of Technology, Nanchang 330013,China;2.China Institute of Atomic Energy,Beijing 102413,China) |
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| Abstract: | The corncob modified with KMnO4 was used to adsorb uranium from aqueous solution, the adsorption capacity on uranium was compared with unmodified corncob. The influences of contact time, solution pH, adsorbent concentration and initial uranium concentration were investigated. The optimal conditions were found to be 2.5 h of contact time,pH=5.5,30 mg/L of initial uranium concentration, 0.12 g of modified corncob and 0.2 g of unmodified corncob in 100 mL solution,the removal rates reached 93.54% and 59.68%, respectively. The modified corncob had better adsorption capacity on uranium than unmodified corncob. |
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| Keywords: | potassium permanganate modification corncob uranium adsorption |
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