Phyllite/bentonite mixture as a novel effective buffer material for a geological disposal of radioactive waste

Phyllite/bentonite mixture as a novel effective buffer material for a geological disposal of radioactive waste | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Phyllite/bentonite mixture as a novel effective buffer material for a geological disposal of radioactive waste Joanna Kyzioł-Komosińska, Janusz Janeczek, Agnieszka Dzieniszewska, and 7 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-2641542/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 08 Dec, 2023 Read the published version in Environmental Science and Pollution Research → Version 1 posted 6 You are reading this latest preprint version Abstract The use of phyllite (Phy) instead of quartz in mixtures with bentonite (B) is recommended as a buffer material for engineering barriers in a geological repository of nuclear waste. The recommendation is based on experimentally determined sorption properties of various Phy/ B mixtures. The adsorption capacity of Phy/B mixtures (Phy/B: 75/25, 50/50, and 25/75), the removal efficacy of Eu(III) ions (an analog for fissiongenic lanthanides and actinides) and the rate of their binding reaction were studied using the batch adsorption equilibrium and kinetic experiments at different Eu(III) initial concentrations, solution pH and solution to adsorbent (L:S) ratio. The adsorption capacity of the Phy/B mixtures increased with the increased bentonite content in the mixture depending on the L:S ratio and solution pH. The highest increase in the adsorption capacity of the Phy/B mixtures compared to phyllite was observed for the Phy/B proportions of 25/75 and 50/50. The rate of the Eu(III) adsorption was the best fitted by the pseudo-second order kinetic model indicating that the adsorption rate was controlled by chemisorption. The Sips model provided the best correlation of the adsorption experimental data, indicative of more than one adsorption site. The results of this study show the advantage of the Phy/B mixtures in immobilizing Eu and certain fission products by combining adsorption properties of the materials. Phyllite/bentonite mixtures Europium(III) ions Adsorption/desorption Radioactive waste repository barriers Full Text Supplementary Files SupportingInformationforEu2.docx Cite Share Download PDF Status: Published Journal Publication published 08 Dec, 2023 Read the published version in Environmental Science and Pollution Research → Version 1 posted Editorial decision: Major Revision 04 Sep, 2023 Reviewers agreed at journal 16 Apr, 2023 Reviewers invited by journal 14 Apr, 2023 Editor invited by journal 29 Mar, 2023 Editor assigned by journal 22 Mar, 2023 First submitted to journal 14 Mar, 2023 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-2641542","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":191843733,"identity":"e48e5295-7008-45fc-9a04-6b25f1652e63","order_by":0,"name":"Joanna Kyzioł-Komosińska","email":"","orcid":"","institution":"Instytut Podstaw Inzynierii Srodowiska Polskiej Akademii Nauk","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Joanna","middleName":"","lastName":"Kyzioł-Komosińska","suffix":""},{"id":191843734,"identity":"215792e0-680f-47af-9b07-378dfbe4f7e9","order_by":1,"name":"Janusz Janeczek","email":"","orcid":"","institution":"Uniwersytet Śląski w Katowicach: Uniwersytet Slaski w Katowicach","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Janusz","middleName":"","lastName":"Janeczek","suffix":""},{"id":191843735,"identity":"1d09c597-e220-459c-ae2a-cbf181d5e983","order_by":2,"name":"Agnieszka Dzieniszewska","email":"","orcid":"","institution":"Instytut Podstaw Inzynierii Srodowiska Polskiej Akademii Nauk","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Agnieszka","middleName":"","lastName":"Dzieniszewska","suffix":""},{"id":191843736,"identity":"2043a24f-0643-47ff-a320-5e556e5c25ef","order_by":3,"name":"Monika J. 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