Minerals-Enabled Water Innovation: Materials, Processes, and Resource Recovery

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

Deadline for manuscript submissions: 31 May 2027 | Viewed by 630

Editors


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Guest Editor
Faculty of Engineering Sciences, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
Interests: granular and membrane filtration separation processes; multi-layered ceramic membranes; water and wastewater treatment technologies; colloidal chemistry; energy optimization of water treatment processes
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School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
Interests: porous materials; remediation of contaminated water
School of Mines, China University of Mining and Technology, Xuzhou 221116, China
Interests: rockmass instability; fractured rock mass; constitutive models; energy evolution; strata control; environmental effects
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Growing pressures on global water resources are driving wastewater treatment toward solutions that are not only efficient but also resource-aware, mineral-informed, and compatible with circular economy principles. In this context, minerals and mineralogical concepts play a central role—not only as functional materials for pollutant removal, but also as active components governing reaction pathways, separation efficiency, and resource recovery from aqueous streams.

This Special Issue focuses on mineral-enabled water innovation, emphasizing the application of mineral materials, mineral processing principles, and mineralogical characterization to wastewater treatment and resource recovery. Contributions are invited that explore how mineral structure, surface chemistry, phase composition, and textural properties influence adsorption, catalysis, flotation, membrane separation, and selective precipitation processes. Attention is given to the translation of established mineral processing techniques—such as flotation, solid–liquid separation, and selective extraction—into advanced water treatment technologies.

In addition, the Special Issue welcomes studies on the recovery of valuable resources, including critical metals and nutrients, from industrial effluents, mine-influenced waters, and treatment residues. The characterization, transformation, and valorization of mineral-rich sludges, tailings, and by-products are also within scope, especially where they contribute to low-carbon operation, waste minimization, and circular material flows.

By integrating mineral science with water engineering, this Special Issue aims to provide a platform for interdisciplinary research that advances sustainable, mineral-informed solutions for water purification, resource recovery, and environmental protection.

Scope of the Special Issue

This Special Issue focuses on research at the intersection of mineral science, mineral processing, and water treatment, with particular emphasis on mineral-enabled approaches to wastewater purification and resource recovery. Contributions should demonstrate a clear link to minerals, mineralogical properties, or mineral-processing concepts, rather than purely chemical or biological treatment methods.

Topics of interest include, but are not limited to, the following:

  • Mineral-based materials for water and wastewater treatment (adsorption, catalysis, membranes, and composite systems);
  • Clay minerals, layered materials, and engineered mineral structures for contaminant removal;
  • Application of mineral processing principles (e.g., flotation, solid–liquid separation, selective extraction) to aqueous systems;
  • Recovery of critical metals, nutrients, and valuable resources from industrial effluents and mine-influenced waters;
  • Mineralogical characterization and transformation during treatment processes;
  • Valorization and reuse of mineral-rich treatment residues, sludges, tailings, and by-products;
  • Integration of mineral-enabled technologies into circular and low-carbon water systems.

Studies that combine experimental investigation, mechanistic insight, and process-oriented analysis are particularly encouraged.

Dr. Vitaly Gitis
Dr. Yuan Gao
Dr. Peng Huang
Dr. Xiangning Bu
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • wastewater treatment
  • mineral-based adsorbents
  • clay minerals and layered materials
  • mineral surface chemistry
  • flotation and mineral processing
  • critical metal recovery
  • mine-influenced water
  • tailings and treatment residues
  • circular economy
  • low-carbon water technologies

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Published Papers (1 paper)

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Research

15 pages, 2824 KB  
Article
Emulsified Collectors in Coal Slime Flotation: Linking Collector Dispersion, Flotation Performance, and Microbial Survival
by Aoyu Huang, Jixuan Gao, Lisha Dong, Liuchuang Zhao, Lei Yang, Mohamed A. Deyab and Xiangning Bu
Minerals 2026, 16(8), 779; https://doi.org/10.3390/min16080779 - 27 Jul 2026
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Abstract
Emulsified collectors (ECs) have attracted increasing attention in coal slime flotation because of their superior dispersion characteristics and collecting performance compared with conventional hydrocarbon collectors. However, the relationship between flotation performance and the effects of ECs on microorganisms in circulating water remains poorly [...] Read more.
Emulsified collectors (ECs) have attracted increasing attention in coal slime flotation because of their superior dispersion characteristics and collecting performance compared with conventional hydrocarbon collectors. However, the relationship between flotation performance and the effects of ECs on microorganisms in circulating water remains poorly understood. In this study, four ECs were prepared using cationic (dodecyltrimethylammonium bromide (DTAB)), anionic (sodium dodecyl sulfate (SDS)), nonionic (Tween-80), and solid particle-based (β-cyclodextrin (CD)) emulsifiers. The droplet size distribution, flotation performance, adsorption behavior, and microbial response were systematically evaluated. The results showed that ECs significantly improved coal slime flotation compared with conventional kerosene. Among the surfactant-based ECs, smaller oil droplet sizes resulted in higher clean coal recovery, demonstrating the critical role of collector dispersion in flotation performance. Fourier transform infrared spectroscopy provided qualitative evidence of stronger relative adsorption of ECs on coal surfaces than that of conventional kerosene. Yeast survival tests revealed that all ECs exhibited less adverse impact on microorganisms than kerosene. However, for surfactant-based ECs, microbial survival decreased as flotation performance increased. A preliminary negative correlation (R2 = 0.9323, n = 4, where “n” denotes the number of collector formulations tested) was observed between the yeast survival rate and the number of oil droplets, suggesting that fine oil droplets remaining in the aqueous phase may have contributed to reduced microbial viability. In contrast, the β-CD-stabilized Pickering emulsion achieved both the highest flotation efficiency index (56.22) and the highest yeast survival rate (66.49%), outperforming Tween-80-EC (54.90 and 58.65%), SDS-EC (50.95 and 61.45%), DTAB-EC (50.08 and 63.31%), and conventional kerosene (40.32 and 53.35%). These findings demonstrate the importance of balancing flotation performance and environmental compatibility in the design of sustainable flotation collectors for coal processing. Full article
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