评估掺铁磷酸钙对 65Zn 的吸附作用

IF 1.5 3区 化学 Q3 CHEMISTRY, ANALYTICAL
Saber Ibrahim Moussa, Gehan Abdel Rahman Sadek Dakroury, Ehab Abu El Soud Abdel Halim El Shazly
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引用次数: 0

摘要

65Zn 是一种在冷却水反应堆中发现的裂变产物,因其毒性而对环境构成重大风险。本研究探讨了如何使用 Ca-Fe2+ 磷酸盐(SB1)和 Ca-Fe3+ 磷酸盐(SB2)作为锌(II)的吸附剂,这些吸附剂是通过湿化学方法制备的。对添加了 65Zn 放射性核素的 Zn(II) 溶液进行了放射性分析。最佳吸附条件被确定为 pH 值为 4.5,接触时间为 24 小时,吸附剂体积与吸附剂质量比为 1:10,温度为 20 °C。朗穆尔等温线模型最适合吸附数据,表明 SB1 和 SB2 的单层吸附容量分别为 0.574 mmol g-1 和 0.621 mmol g-1。吸附动力学遵循准 N 阶模型。此外,0.1 M FeCl3 能从两种吸附剂中有效解吸 99% 的 Zn(II)。吸附过程是自发的,而且是内热的。这些研究结果表明,SB1 和 SB2 具有从过期电池黑液中回收锌(II)的潜在应用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Evaluation of Fe-doped calcium phosphate for 65Zn sorption

Evaluation of Fe-doped calcium phosphate for 65Zn sorption

65Zn, a fission product found in cooling water reactors, poses significant environmental risks due to its toxicity. This study explores the use of Ca–Fe2+ phosphate (SB1) and Ca–Fe3+ phosphate (SB2) as sorbents for Zn(II), prepared via the wet chemical method. The Zn(II) solution, spiked with 65Zn radionuclides, was analyzed radiometrically. Optimal sorption conditions were determined to be pH 4.5, a contact time of 24 h, and a sorbate volume to sorbent mass ratio of 1:10 at 20 °C. The Langmuir isotherm model best fit the adsorption data, indicating monolayer adsorption capacities of 0.574 mmol g−1 for SB1 and 0.621 mmol g−1 for SB2. Sorption kinetics followed a quasi-nth-order model. Furthermore, 0.1 M FeCl3 effectively desorbed 99% of Zn(II) from both sorbents. The sorption process was found to be spontaneous and endothermic. These findings suggest that SB1 and SB2 have potential applications in recycling Zn(II) from the black mass of expired batteries.

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来源期刊
CiteScore
2.80
自引率
18.80%
发文量
504
审稿时长
2.2 months
期刊介绍: An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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