Characterization of the sorption behavior and mechanism of U(VI) on sericite by batch experiments and spectroscopic techniques

Characterization of the sorption behavior and mechanism of U(VI) on sericite by batch experiments and spectroscopic techniques
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通过批量实验和光谱技术表征绢云母上 U(VI) 的吸附行为和机理

DOI:
10.1007/s10967-017-5324-9
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发表时间:
2017-06
影响因子:
1.6
通讯作者:
Tan Xiaoli
Tan Xiaoli
中科院分区:
化学4区
文献类型:
--
作者:
Liu Ge;Mei Huiyang;Zhang Huifang;Liu Haining;Chen Changlun;Alharbi Njud S.;Hayat Tasawar;Tan Xiaoli

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研究了绢云母对铀(VI)的吸附行为及机理。研究了绢云母的表面性质,考察了环境因素对绢云母吸附U(VI)的影响。用不同的等温模型和动力学模型对实验数据进行了模拟。在整个pH范围内,腐殖酸对U(VI)的吸附有明显的影响,硅酸盐对U(VI)的吸附有促进作用。吸附-解吸滞后表明吸附过程是不可逆的。光谱分析表明,−OH基团在U(VI)吸附中具有重要作用。
This study explored the sorption behavior and mechanism of U(VI) on sericite. The surface properties of sericite were investigated, and the effects of several environmental factors on U(VI) sorption to sericite were evaluated. The experimental data were simulated by different isotherm models and kinetic models. Humic acids affects U(VI) sorption obviously while silicate promotes the process in the whole pH range. The sorption–desorption hysteresis suggests an irreversible sorption process. Spectroscopic analyses indicate that the −OH groups have an important effect in the U(VI) sorption.
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