环境条件对南方红壤胶体吸附锶的影响

IF 2.8 4区工程技术 Q2 ENGINEERING, CHEMICAL Processes Pub Date : 2023-01-25 DOI:10.3390/pr11020379

Y. Shao, Yuanyuan Zhao, Min Luo, Guifang Zhao, Dian-dou Xu, Zhiming Liu, Ling-ling Ma

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引用次数: 1

摘要

放射性核素在环境中的命运正引起越来越多的关注。通过一系列的批量实验，研究了不同环境因素对南方红壤胶体对锶离子(Sr2+)吸附行为的影响，并对其吸附机理进行了简要探讨。随着固液比和Sr2+浓度的增加，吸附效率逐渐提高。pH和离子强度对吸附的影响较大，温度对吸附的影响较小。拟合Langmuir模型的吸附数据表明，该过程是单层的、均匀的。热力学参数还表明，Sr2+在红壤胶体上的吸附是一个自发的放热过程。这项工作的目的是深入了解红壤胶体对放射性核素在野外的命运的作用。

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Effect of Environmental Conditions on Strontium Adsorption by Red Soil Colloids in Southern China

The fate of radionuclides in the environment is attracting increased attention. The effect of various environmental effects on the adsorption behavior of the strontium ion (Sr2+) by red soil colloids in Southern China was studied by a series of batch experiments, and the adsorption mechanism was briefly investigated as well. With the increase in the solid–liquid ratio and the concentration of Sr2+, the adsorption efficiency increased gradually. The effect of pH and ionic strength on adsorption was strong, while temperature had little effect. The adsorption data fitted to the Langmuir model indicates that the process is monolayered and homogeneous. The thermodynamic parameters also show that the adsorption of Sr2+ on red soil colloids is a spontaneous and exothermic process. The aim of this work is to gain insight into the role of red soil colloids on the fate of radionuclides in the field.

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来源期刊

Processes Chemical Engineering-Bioengineering

CiteScore

5.10

自引率

11.40%

发文量

2239

审稿时长

14.11 days

期刊介绍： Processes (ISSN 2227-9717) provides an advanced forum for process related research in chemistry, biology and allied engineering fields. The journal publishes regular research papers, communications, letters, short notes and reviews. Our aim is to encourage researchers to publish their experimental, theoretical and computational results in as much detail as necessary. There is no restriction on paper length or number of figures and tables.