Adsorption of uranium on adsorbents produced from used tires
Adsorption of uranium on adsorbents produced from used tires
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DOI：
10.1023/a:1023308311240
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发表时间：
2003-04
影响因子：
1.6
通讯作者：
M. Mahramanlıoğlu
中科院分区：
文献类型：
--
作者：
M. Mahramanlıoğlu
目前的研究涉及用旧轮胎生产的吸附剂从水溶液中去除铀的潜在用途。使用两种不同的吸附剂，包括用旧轮胎生产的炭和活性炭。活性炭的表面积更大。吸附实验根据时间、吸附剂浓度、pH 值和铀初始浓度进行。发现吸附动力学遵循拉格格伦方程。计算了颗粒内扩散的速率常数和传质系数。结果表明，平衡数据可以用Langmuir 和Freundlich 方程拟合。还研究了不同阳离子存在下铀的吸附，并将结果与阳离子的离子势相关。研究结果表明，用废旧轮胎生产的活性炭可以被认为是一种具有商业除铀潜力的吸附剂。
The present investigation deals with the potential use of adsorbents produced from used tires for the removal of uranium from aqueous solutions. Two different adsorbents were used including char and activated carbon produced from used tires. The surface area was larger on activated carbon. Adsorption experiments were carried out as a function of time, adsorbent concentration, pH and initial concentration of uranium. The adsorption kinetics was found to follow the Lagergren equation. The rate constants of intraparticle diffusion and mass transfer coefficients were calculated. It was shown that the equilibrium data could be fitted by the Langmuir and Freundlich equations. The adsorption of uranium in the presence of diffferent cations were also studied and the results were correlated with the ionic potential of the cations. Results obtained in the study demonstrate that the activated carbon produced from used tires can be considered as an adsorbent that has a commercial potential for uranium removal.