{"title":"中国放射性废物库处置环境中地质材料对钚的吸附研究","authors":"Yang-chun Leng, Jin-cai Feng, Qiao Jiang, Ze-hua Li, Hao-xin Feng","doi":"10.1007/s10967-024-09702-4","DOIUrl":null,"url":null,"abstract":"<div><p>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 Fe<sup>3+</sup> was ascribed to the immobilization of Fe<sup>3+</sup> hydrolysis products and competitive adsorption. Simultaneously, Pu(IV) formed complexes with both CO<sub>3</sub><sup>2−</sup> and HCO<sup>3−</sup>, hindering the adsorption. Consequently, it is recommended that radioactive waste repositories maintain a low-carbon and iron-salt environment.</p></div>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"333 11","pages":"5639 - 5651"},"PeriodicalIF":1.5000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of plutonium adsorption by geological materials in China’s radioactive waste repository disposal environment\",\"authors\":\"Yang-chun Leng, Jin-cai Feng, Qiao Jiang, Ze-hua Li, Hao-xin Feng\",\"doi\":\"10.1007/s10967-024-09702-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>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 Fe<sup>3+</sup> was ascribed to the immobilization of Fe<sup>3+</sup> hydrolysis products and competitive adsorption. Simultaneously, Pu(IV) formed complexes with both CO<sub>3</sub><sup>2−</sup> and HCO<sup>3−</sup>, hindering the adsorption. Consequently, it is recommended that radioactive waste repositories maintain a low-carbon and iron-salt environment.</p></div>\",\"PeriodicalId\":661,\"journal\":{\"name\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"volume\":\"333 11\",\"pages\":\"5639 - 5651\"},\"PeriodicalIF\":1.5000,\"publicationDate\":\"2024-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Radioanalytical and Nuclear Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10967-024-09702-4\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radioanalytical and Nuclear Chemistry","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s10967-024-09702-4","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
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.
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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