| 唐振平,凌辉,谢水波*,刘迎九,李仕友.H2O2对铁负载膨润土吸附铀(VI)影响的试验研究[J].南华大学学报(自然科学版),2012,26(2):13~18.[TANG Zhen-ping1,LING Hui1,XIE Shui-bo1,2*,LIU Ying-jiu1,LI Shi-you1.Experimental Study on Impact of Hydrogen Peroxide to Adsorption of U(VI) on Fe-immobilized Bentonite[J].Journal of University of South China(Science and Technology),2012,26(2):13~18.] |
| H2O2对铁负载膨润土吸附铀(VI)影响的试验研究 |
| Experimental Study on Impact of Hydrogen Peroxide to Adsorption of U(VI) on Fe-immobilized Bentonite |
| 投稿时间：2012-02-24 |
| DOI： |
| 中文关键词: 铀(VI) 过氧化氢 铁负载膨润土 吸附 |
| 英文关键词:U(VI) hydrogen peroxide Fe-immobilized bentonite adsorption |
| 基金项目:国家自然科学基金资助项目(11175081);湖南省科技计划重点基金资助项目(2011SK2015);湖南省研究生创新基金资助项目(CX2011B375) |
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| 中文摘要: |
| 系统研究了过氧化氢(H2O2)影响铁负载膨润土吸附铀(VI)的效果与机理.通过改变pH、H2O2浓度、初始U(VI)浓度，探讨了加入H2O2的条件下铁负载膨润土对U(VI)的吸附过程，并采用扫描电镜（SEM）、红外光谱（FT-IR）等对吸附U(VI)前后的铁负载膨润土进行了表征.试验结果表明，溶液初始pH为3～6时，H2O2能使铁负载膨润土对U(VI)的吸附率达到98%以上；H2O2浓度对反应平衡时的吸附性能影响不大；随着U(VI)浓度的增大，H2O2对铁负载膨润土吸附U(VI)的促进作用也随之增强，U(VI)浓度为0.64 mmol/L时，吸附量从1.74 mmol/g（铁负载膨润土）增至3.13 mmol/g（H2O2和铁负载膨润土的复合体系）. |
| 英文摘要: |
| The effect of hydrogen peroxide(H2O2) on the adsorption onto Fe-immobilized bentonite was investigated at various conditions of initial solution pH,H2O2 concentration and U(VI) concentration by batch technique,Fe-immobilized before and after adsorption were characterized by Scanning Electron Microscope(SEM) and Fourier Transform Infrared Spectra(FT-IR).The results indicated that the adsorption is strongly dependent on pH,H2O2 enhanced the U(VI) adsorption to greater than 98% at pH 3～6.The adsorption was affected a little by the concentration of H2O2 when the reaction reached to equilibrium.The facilitation of adsorption by H2O2 increased as uranium concentration increases, when the initial U(VI) concentration was 0.64 mmol/L,the saturation amount for U(VI) adsorbed by Fe-immobilized bentonite were 1.74 mmol/g (Fe-immobilized bentonite) and 3.13 mmol/g(composite system of H2O2 and Fe-immobilized bentonite) respectively. |
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