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A high efficient sorption of U(VI) from aqueous solution using amino-functionalized SBA-15
Liu YL(刘雅兰); Yuan LY(袁立永); Lan JH(蓝建慧); Liu, YL; Yuan, LY; Lan, JH; Li, ZJ; Feng, YX; Zhao, YL; Chai, ZF; Shi, WQ;; Li ZJ(李子杰); Feng YX(冯一潇); Zhao YL(赵宇亮); Chai ZF(柴之芳); Shi WQ(石伟群)
2012
Source PublicationJOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume292Issue:2Pages:803-810
AbstractUranium is one of the most hazardous heavy metal due to its long half-life radioactivity, high toxicity and mobility as aqueous uranyl ion (UO22+) under ordinary environmental conditions. Herein, amino functionalized SBA-15 (APSS) was developed as a rapid and efficient sorbent for removal of U(VI) from the environment. The APSS sample was synthesized by grafting method and was characterized by SEM, NMR, SAXS, and N-2 sorption/desorption isothermal experiments. The sorption of U(VI) by APSS was investigated under different conditions of pH, contact time, initial U(VI) concentration, ionic strength and solid-liquid ratio. The results show that the sorption of U(VI) by APSS is strongly dependent on pH but independent of ionic strength and solid-liquid ratios (m/V). The sorption is ultrafast with an equilibrium time of less than 30 min, and the sorption capacity is as large as 409 mg/g at pH 5.3 +/- 0.1. Besides, the U(VI) sorption by APSS from extremely diluted solution and the desorption of U(VI) from APSS were also studied. It is found that 100 mg of APSS can almost completely remove the U(VI) ions from 4 L aqueous solution with the U(VI) concentration as low as 4.2 ppb and the sorbed U(VI) can be completely desorbed by 0.1 mol/L nitric acid. The results strongly reveal the high performance of the APSS material in the removal and preconcentration of U(VI) from the aqueous solution.
KeywordUranium Sorption Mesoporous silica Functionalization
Subject AreaChemistry; Nuclear Science & Technology
DOI10.1007/s10967-011-1515-y
Indexed BySCI
WOS IDWOS:000305230100042
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/224065
Collection院士
多学科研究中心
Recommended Citation
GB/T 7714
Liu YL,Yuan LY,Lan JH,et al. A high efficient sorption of U(VI) from aqueous solution using amino-functionalized SBA-15[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,2012,292(2):803-810.
APA 刘雅兰.,袁立永.,蓝建慧.,Liu, YL.,Yuan, LY.,...&石伟群.(2012).A high efficient sorption of U(VI) from aqueous solution using amino-functionalized SBA-15.JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,292(2),803-810.
MLA 刘雅兰,et al."A high efficient sorption of U(VI) from aqueous solution using amino-functionalized SBA-15".JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 292.2(2012):803-810.
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