中国放射性废物库处置环境中地质材料对钚的吸附研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-08-28 DOI:10.1007/s10967-024-09702-4

Yang-chun Leng, Jin-cai Feng, Qiao Jiang, Ze-hua Li, Hao-xin Feng

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引用次数: 0

摘要

研究阐明了 pH 值和离子对粘土岩和膨润土吸附钚（IV）行为的影响。钚（IV）的吸附表现出明显的 pH 值依赖性。在酸性环境中，粘土岩和膨润土的吸附都受到明显抑制。各种离子对吸附都有抑制作用。具体来说，Fe3+ 的抑制作用可归因于 Fe3+ 的水解产物固定化和竞争性吸附。同时，Pu(IV) 与 CO32- 和 HCO3- 形成络合物，阻碍了吸附。因此，建议放射性废物贮存库保持低碳和铁盐环境。

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Investigation of plutonium adsorption by geological materials in China’s radioactive waste repository disposal environment

The investigation elucidated the impact of pH and ions on the adsorption behavior of Pu(IV) by clay rock and bentonite, two pivotal geological barriers for disposal. Pu(IV) adsorption demonstrated a pronounced dependence on pH. In acidic environments, the adsorption of both clay rock and bentonite was markedly inhibited. Various ions exhibited inhibitory effects on the adsorption. Specifically, the inhibitory effect of Fe³⁺ was ascribed to the immobilization of Fe³⁺ hydrolysis products and competitive adsorption. Simultaneously, Pu(IV) formed complexes with both CO₃²⁻ and HCO³⁻, hindering the adsorption. Consequently, it is recommended that radioactive waste repositories maintain a low-carbon and iron-salt environment.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.

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