Investigating the effects of different chemical conditions in aqueous solutions on the adsorption of Eu(III) onto illite colloids

IF 1.5 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2024-10-14 DOI:10.1007/s10967-024-09797-9

Jianqiao Liu, Dandan Liu, Jun Liu, YiJu Zhu, Xiaoli Chen, Fangzhu Xiao, Guowen Peng

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Abstract

Under diverse hydrochemical circumstances, the adsorption characteristics of Eu(III) onto illite colloids were investigated. Batch experiments were carried out to assess the impact of various parameters, including reaction duration, temperature, the initial Eu(III) concentration, pH value, ionic strength, and the presence of macromolecular organic matter, on the adsorption efficacy of Eu(III) by illite colloids. The findings reveal that the adsorption of Eu(III) onto illite colloids is a swift and effective process, significantly influenced by pH. The ionic strength of the solution and the presence of different cations can impede the adsorption rate of Eu(III) on illite colloids. Conversely, the presence of fulvic acid can notably enhance the adsorption rate of Eu(III) in acidic environments. Analysis of the isothermal adsorption model data suggests that the adsorption process is a spontaneous and endothermic reaction, predominantly featuring single-layer adsorption.

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研究了水溶液中不同化学条件对伊利石胶体吸附Eu（III）的影响

研究了不同水化学条件下伊利石胶体对Eu（III）的吸附特性。通过批量实验考察了反应时间、温度、初始Eu（III）浓度、pH值、离子强度、大分子有机物存在等参数对伊利石胶体吸附Eu（III）效果的影响。研究结果表明，Eu（III）在伊利石胶体上的吸附是一个快速有效的过程，受ph的影响显著。溶液的离子强度和不同阳离子的存在会阻碍Eu（III）在伊利石胶体上的吸附速率。相反，富里酸的存在可以显著提高Eu（III）在酸性环境中的吸附速率。等温吸附模型数据分析表明，吸附过程为自发吸热反应，以单层吸附为主。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

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.