Radionuclide Interactions with Natural and Synthetic Solids

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Environmental Mineralogy and Biogeochemistry".

Deadline for manuscript submissions: 31 August 2024 | Viewed by 520

Special Issue Editors


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Guest Editor
Bundesgesellschaft für Endlagerung mbH, 31224 Peine, Germany
Interests: applied research; analytical chemistry; clay chemistry; thermodynamic databases; spectroscopy; actinide diffusion; thermodynamics/kinetics/transport of radioactive species interacting with mineral/rock surfaces in complex natural surroundings; (reactive) transport modeling

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Guest Editor
Galson Sciences Limited, Oakham LE15 6AX, UK
Interests: actinide sorption; actinide redox speciation; environmental radioactivity; environmental pollution; actinide biogeochemistry

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Guest Editor
Department of Chemistry, University of San Francisco, San Francisco, CA 94117, USA
Interests: impact of climate change on soil biogeochemistry; soil mineral-organic associations; metal redox geochemistry; radionuclide fate and transport; synchrotron-based characterization of terrestrial ecosystems

Special Issue Information

Dear Colleagues,

Understanding the interaction of aqueous radionuclide species with inorganic and organic compounds in the environment is a complex and challenging research question. Geochemical conditions, such as pH, redox potential, temperature, and salinity, control both the speciation of the radionuclide as well as the complexation, sorption, and ion exchange properties of organic compounds and minerals. Accurate interrogation of these complex natural systems demands the application of a multitude of analytical techniques, wet-chemical methods, and modeling approaches. In this Special Issue, our goal is to provide a showcase for the exciting and important work that is being carried out by both established and emerging scientists in the field of radionuclide (bio)geochemistry.

With this Special Issue of Minerals, we seek to give an insight into the nature of radionuclide environmental reactions and processes, as well as providing the data needed for the expansion of thermodynamic databases and reactive transport models. The Special Issue promotes contributions involving state-of-the-art of analytical techniques, wet-chemical methods, and theoretical approaches that interrogate the interaction of radionuclides with mineral or rock surfaces in the presence or absence of organic compounds and microbes. We especially encourage studies that fill gaps in the respective models and databases devoted to nuclear waste disposal and the remediation of contaminated land sites. These gaps include, for example, the role of microbially mediated reactions, interactions at high salinities and/or elevated temperatures, as well as radionuclide trace concentrations.

We look forward to a successful and informative Special Issue of Minerals that showcases the talents of researchers of all levels, as well as the tremendous advances in our understanding of the environmental behavior of radionuclides.

Dr. Claudia Joseph
Dr. James Begg
Dr. Amrita Bhattacharyya
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • radionuclides
  • minerals
  • rocks
  • actinides
  • spectroscopy
  • sorption
  • ion exchange
  • surface complexation modeling
  • diffusion
  • (reactive) transport modeling
  • thermodynamics
  • kinetics
  • transport
  • microorganisms

Published Papers (1 paper)

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Research

15 pages, 1120 KiB  
Article
In Search of Phytoremediation Candidates: Eu(III) Bioassociation and Root Exudation in Hydroponically Grown Plants
by Max Klotzsche, Viktor Dück, Björn Drobot, Manja Vogel, Johannes Raff, Thorsten Stumpf and Robin Steudtner
Minerals 2024, 14(8), 754; https://doi.org/10.3390/min14080754 - 26 Jul 2024
Abstract
Lanthanides and actinides are emerging contaminants, but little is known about their uptake and distribution by plants and their interactions in the rhizosphere. To better understand the fate of these metals in plants, the bioassociation of 2, 20 and 200 µM Eu(III) by [...] Read more.
Lanthanides and actinides are emerging contaminants, but little is known about their uptake and distribution by plants and their interactions in the rhizosphere. To better understand the fate of these metals in plants, the bioassociation of 2, 20 and 200 µM Eu(III) by five hydroponically grown crops endemic to Europe was assessed. The metal’s concentration and its speciation were monitored by inductively coupled plasma mass spectrometry and laser spectroscopy, whereas root exudation was investigated by chromatographic methods. It has been shown, that Eu(III) bioassociation is a two-stage process, involving rapid biosorption followed by accumulation in root tissue and distribution to the stem and leaves. Within 96 h of exposure time, the plant induces a change of Eu(III) speciation in the liquid medium, from a predominant Eu(III)aquo species, as calculated by thermodynamic modelling, to a species with longer luminescence lifetime. Root exudates such as citric, malic, and fumaric acid were identified in the cultivation medium and affect Eu(III) speciation in solution, as was shown by a change in the thermodynamic model. These results contribute to a comprehensive understanding of the fate of lanthanides in the biosphere and provide a basis for further investigations with the chemical analogues Cm(III) and Am(III). Full article
(This article belongs to the Special Issue Radionuclide Interactions with Natural and Synthetic Solids)
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