{"title":"Adsorption of Eu(III) on rutile in the presence of complexing inorganic anions: a combined macroscopic and spectroscopic investigation","authors":"Wanqiang Zhou, Yao Li, Chunli Liu","doi":"10.1007/s10967-024-09711-3","DOIUrl":null,"url":null,"abstract":"<p>Knowledge of the geochemical behavior of europium is important for the safe disposal of radioactive wastes. Complexing inorganic anions are ubiquitous in repository environments and can affect europium adsorption behaviors significantly. This work comprehensively studied the Eu(III) adsorption on rutile in the presence of complexing inorganic anions. Our results indicated that sulfate and carbonate had a negligible impact on Eu(III) adsorption, while phosphate could strongly enhance the adsorption. The spectral results suggested that phosphate would enhance Eu(III) adsorption by forming a phosphate-bridged complex on rutile surface under acidic conditions, while promoting adsorption by surface precipitation under alkaline conditions.</p>","PeriodicalId":661,"journal":{"name":"Journal of Radioanalytical and Nuclear Chemistry","volume":"29 1","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2024-08-24","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://doi.org/10.1007/s10967-024-09711-3","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Knowledge of the geochemical behavior of europium is important for the safe disposal of radioactive wastes. Complexing inorganic anions are ubiquitous in repository environments and can affect europium adsorption behaviors significantly. This work comprehensively studied the Eu(III) adsorption on rutile in the presence of complexing inorganic anions. Our results indicated that sulfate and carbonate had a negligible impact on Eu(III) adsorption, while phosphate could strongly enhance the adsorption. The spectral results suggested that phosphate would enhance Eu(III) adsorption by forming a phosphate-bridged complex on rutile surface under acidic conditions, while promoting adsorption by surface precipitation under alkaline conditions.
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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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