Fe304磁流体对铀(VI)的吸附研究 |
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引用本文: | 贾继云,袁亚莉,黄芬,徐丽华,刘雅兰,黄笑寒.Fe304磁流体对铀(VI)的吸附研究[J].衡阳工学院学报,2011(2):66-69. |
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作者姓名: | 贾继云 袁亚莉 黄芬 徐丽华 刘雅兰 黄笑寒 |
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作者单位: | 南华大学化学化工学院,湖南衡阳421001 |
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基金项目: | 湖南省科技厅基金资助项目(2009FJ3116) |
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摘 要: | 为降低铀对环境的影响,研究纳米磁流体对铀(VI)的吸附行为.用沉淀法制备了磁粒径10~20nm的Fe2O2磁流体,考察了该磁磁流体对铀(VI)吸附的各种影响因素,结果表明:在纳米磁流体浓度为2.5∥L、温度35~C、pH=3、吸附时间t=30min的条件下,对3×1014mol/L铀的吸附萃取率可达到84.15%.该吸附过程符合假设的二级动力学模型.
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关 键 词: | 纳米粒子 四氧化三铁 铀(VI) 动力学模型 |
The Adsorption Behavior of Uranyl Ion on the Fe304 Ferro Fluids |
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Authors: | JIA Ji-yun YUAN Ya-li HUANG Fen XU Li-hua LIU Ya-lan HUANG Xiao-han |
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Affiliation: | ( School of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan 421001, China) |
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Abstract: | The water based ferrofluids with saturated magnetization 10 -20 nm was pre- pared by chemical coprecipitation, which was characterized by TEM. The adsorption of Ura- nyl ion on the of ferrofluids was studied in this paper. The result indicates that the optimum experiment condition is the ferro fluids ion of 2.5 g/L, temperature35~C , pH value 3 and adsorption time 30 rain, under which circumstances, the extraction rate of the Uranyl ion (3 x 10-4tool/L) reaches 84. 15%. The adsorption process follows kinetics, which indi- cates the adsorption is a monolaper adsorption. |
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Keywords: | nanoparticle magnetite Uranyl ion kinetic model |
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