| 刘宸,李小燕,刘晴晴,秦启凤,张梓晗.沸石—纳米零价铁复合材料对铀的吸附性能研究[J].南华大学学报(自然科学版),2018,32(1):28~33, 39.[LIU Chen,LI Xiao-yan,LIU Qing-qing,QIN Qi-feng,ZHANG Zi-han.Adsorption Properties of Uranium Using Nanoscale Zero-valentIron Supported on the Zeolite Composites[J].Journal of University of South China(Science and Technology),2018,32(1):28~33, 39.] |
| 沸石—纳米零价铁复合材料对铀的吸附性能研究 |
| Adsorption Properties of Uranium Using Nanoscale Zero-valentIron Supported on the Zeolite Composites |
| 投稿时间：2018-01-11 |
| DOI： |
| 中文关键词: 沸石 纳米零价铁 铀 吸附 |
| 英文关键词:zeolite nanoscale zero-valent iron uranium adsorption |
| 基金项目:国家自然科学基金资助项目(11205030;41761090;11465002)；江西省自然科学基金资助项目(20171ACB2021)；核资源与环境省部共建国家重点实验室项目(NRE1608)；东华理工大学研究创新专项基金校级研究项目(DHYC-2017011) |
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| 中文摘要: |
| 通过液相还原法制备出纳米零价铁,将它负载于沸石表面制成负载型纳米零价铁复合材料(Z-nZVI).采用扫描电镜法(SEM)和BET法对材料进行了表征,考察了不同的温度、反应时间、U(VI)初始浓度、样品投加量对该材料对U(VI)去除效果的影响.结果表明:纳米零价铁颗粒均匀的分布在沸石的表面上,其粒径在40~80 nm左右；在pH为 4.5,温度为30 ℃,接触时间为60 min,样品投加量为0.5 g/L条件下,U(VI)的去除率和吸附容量达到96.7%和48.5 mg/g.该复合材料对水溶液中的U(VI)有较好的去除效果,有望在实际应用中解决含铀废水难以处理的问题. |
| 英文摘要: |
| The nano-zero-valent iron were prepared by liquid-phase reduction method and supported it on the surface of zeolite to form Zeolite-supported Nanoscale Zero-valent Iron (Z-nZVI).The materials were characterized by scanning electron microscopy(SEM) and BET.The effect of different temperature,reaction time,initial concentration of U(VI) and dosage of sample on U(VI) removal were investigated.The results show that the nanoscale zero-valent iron particles are uniformly distributed on the surface of the zeolite and its particle size is about 40~80 nm.The removal rate and adsorption capacity of U (VI) reached 96.72% and 48.55 mg/g under the conditions of pH=4,temperature 30 ℃,contact time 60 min and sample dosage 0.5 g/L.The composite material has a better removal effect on U(VI) in aqueous solution,and is expected to solve the problem that uranium-containing wastewater is difficult to handle in practical applications. |
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