期刊
NANOSCALE
卷 4, 期 7, 页码 2423-2430出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2nr11993e
关键词
-
类别
资金
- National Basic Research Program (973) of China [2010CB933501, 2007CB936703]
- Outstanding Youth Fund [21125730]
- National Science Foundation [20803082, 20971123, 21103191]
- Chinese Academy of Sciences [KJCX1.YW.07, KJCX2.YW.N50]
- Fujian Science Foundation [2009J5017, 2010J01054, 2010J05038]
- Fujian Outstanding Youth Fund [2010J06006]
- Fujian Key Laboratory of Nanomaterials [2006L2005]
- Special Starting Foundation for Excellent Doctors in Chinese Academy of Sciences
This work aims at the investigation of nano-Mg(OH)(2) as a promising adsorbent for uranium recovery from water. Systematic analysis including the uranium adsorption isotherm, the kinetics and the thermodynamics of adsorption of low concentrations of uranyl tricarbonate (0.1-20 mg L-1) by nano-Mg(OH)(2) was carried out. The results showed a spontaneous and exothermic uranium adsorption process by Mg(OH)(2), which could be well described with pseudo second order kinetics. Surface site calculation and zeta potential measurement further demonstrated that UO2(CO3)(3)(4-) was a monolayer adsorbed onto nano-Mg(OH)(2) by electrostatic forces. Accordingly, the adsorption behavior met the conditions of the Langmuir isotherm. Moreover, in most of the reported literature, nano-Mg(OH)(2) had a higher UO2(CO3)(3)(4-) adsorption affinity b, which implied a higher adsorption amount at equilibrium in a dilute adsorbate system. The significance of the adsorption affinity b for choosing and designing adsorbents with respect to low concentration of resources/pollutants treatment has also been assessed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据