Abstract

The dependences of the static capacity (SC) of the AXIONIT MND40T sorbent based on tetraoctyldiglycolamide (TODGA) for Eu(III) on the concentration of HNO₃, HCl, H₂SO_4, and HClO₄ were determined. The SC increases with increasing acid concentration. In the concentration range 2–4 mol dm^–3 SC of AXIONIT MND40T for europium in nitric, hydrochloric, and perchloric acid solutions is approximately the same, whereas in sulfuric acid solutions it is much lower. The maximum capacity and adsorption constant (K_ad) in different media were calculated from the results of processing of the isotherms of europium sorption by AXIONIT MND40T. The mechanism for the extraction of europium from nitric acid solutions by AXIONIT MND40T is proposed based on the IR spectroscopy data.

中文翻译：

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负载型吸附剂AXIONIT MND40T在多种介质上吸附Eu（III）的研究

摘要

确定了基于四辛基二甘醇酰胺（TODGA）的AXIONIT MND40T吸附剂对Eu（III）的静态容量（SC）与HNO ₃，HCl，H ₂ SO ₄和HClO ₄浓度的关系。SC随着酸浓度的增加而增加。在硝酸，盐酸和高氯酸溶液中，ION的AXIONIT MND40T的浓度范围为2-4 mol dm ^–3 SC，大致相同，而在硫酸溶液中则更低。最大容量和吸附常数（K _ad）是通过AXIONIT MND40T对of吸附等温线的处理结果计算得出的。基于红外光谱数据，提出了AXIONIT MND40T从硝酸溶液中萃取of的机理。