Adsorption Properties and Environmental Applications of Clay Minerals

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Clays and Engineered Mineral Materials".

Deadline for manuscript submissions: 28 June 2024 | Viewed by 850

Special Issue Editors


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Guest Editor
Department of Nuclear Chemistry, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
Interests: radioactive waste repository; transport of radioactive contaminants; engineered barriers; sorption and transport models; bentonite
Key Laboratory of Clay Mineral Applied Research of Gansu Province, Center of Eco-Materials and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Interests: attapulgite; palygorskite; halloysite; mineral pigments; environmental mineral materials; resource utilization of solid wastes; antibacterial material

Special Issue Information

Dear Colleagues,

Clay minerals play a fundamental role in many environmental processes, particularly in controlling the movement of various ions and molecules in soils, waters and natural and/or engineered barriers of waste storage facilities. A number of operations and applications are being facilitated by clay minerals, via either their direct use or after modification; this is with the aim of improving their environmental quality. The mineralogical, chemical and geotechnical characterization of the clay materials studied and applied needs to be carried out in order to learn which controlling processes determine the uptake of contaminants by clay materials. In order to predict the changes in the studied environmental systems over time, it is necessary to search for an adequate mathematical description of the individual identified sub-processes. Knowledge of these sub-models and their interconnectedness in global transport models make it possible to predict the flow of contaminants in the vicinity of contamination sources. Papers addressing (i) waste water treatment technologies using clay materials, (ii) theoretical aspects of the capture of significant contaminants on the surface of clay minerals, and (iii) the modeling of contaminant transport in such an environment, of which clay minerals are a significant part, are welcome. 

Dr. Dušan Vopálka
Dr. Bin Mu
Guest Editors

Manuscript Submission Information

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Keywords

  • natural and modified clay materials
  • methods of instrumental characterization
  • uptake of cations and anions
  • batch and transport experiments
  • removal of pollutants from waters
  • sorption models
  • transport of contaminants in compacted clays

Published Papers (1 paper)

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Research

23 pages, 19609 KiB  
Article
Transformation of the Geological Environment under the Influence of Liquid Radioactive Waste (Russian Experience in Studying Historical Nuclear Disposal)
by Victoria Krupskaya, Sergey Zakusin and Mikhail Chernov
Minerals 2024, 14(3), 252; https://doi.org/10.3390/min14030252 - 28 Feb 2024
Viewed by 695
Abstract
Due to various historical events, in the Russian Federation, in addition to the radioactive waste storage facilities used in world practice, there are various nuclear and radiation hazardous facilities that require special procedures for monitoring and decommissioning. One of these facilities is the [...] Read more.
Due to various historical events, in the Russian Federation, in addition to the radioactive waste storage facilities used in world practice, there are various nuclear and radiation hazardous facilities that require special procedures for monitoring and decommissioning. One of these facilities is the disposal site for LRW on the territory of the JSC Siberian Chemical Plant, where specially prepared waste is injected into sand reservoirs lying at depths of 300–350 m between clayey strata. This study examines in detail the features of the lithological and mineral composition of reservoir sands and aquitards. The processes of environmental transformation in reservoir sands, which lead to changes in the composition and structure of rocks, were characterized. These processes manifest themselves in the form of the development of leaching zones and their “healing” with newly formed smectite, the destruction of terrigenous grains, including the development of cracks, and the growth of newly formed smectite in the pore space of reservoirs. The forms of occurrence and localization of authigenic smectite formed as a result of technogenic impact are described. It has been shown that, despite the obvious impact of highly reactive solutions accompanying liquid radioactive waste, the insulating properties of the geological environment are maintained and even improved to some extent. Full article
(This article belongs to the Special Issue Adsorption Properties and Environmental Applications of Clay Minerals)
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