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Sustainable Materials, Waste Management, and Recycling

A special issue of Sustainability (ISSN 2071-1050). This special issue belongs to the section "Waste and Recycling".

Deadline for manuscript submissions: 31 October 2025 | Viewed by 542

Special Issue Editors


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Guest Editor
Department of Applied Radiation and Isotopes, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand
Interests: recycled materials; radiation processing; radiation shielding; industrial waste

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Guest Editor
Department of Radiologic Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Chiang Mai 50200, Thailand
Interests: radiation detection and protection; radiation shielding materials; environmental radiation; sustainable materials; health sciences

Special Issue Information

Dear Colleagues,

Sustainable materials, waste management, and recycling are crucial for building a greener future. Research in these areas helps reduce environmental concerns, conserve natural resources, and promote a circular economy. By developing biodegradable, recyclable, and renewable materials, we can minimize pollution and combat climate change. Waste reduction and efficient recycling also offer socio-economic benefits, such as job creation, cost savings, and improved environmental policies. Furthermore, a multidisciplinary approach—combining science, engineering, policy-making, and industry collaboration—ensures practical and scalable solutions for global sustainability challenges.

This Special Issue on “Sustainable Materials, Waste Management, and Recycling” invites researchers to share innovative solutions that contribute to sustainability. We welcome studies on novel sustainable materials, advanced recycling technologies, efficient waste management strategies, circular economy models, and environmental impact assessments. Research on policy frameworks and industrial applications is also encouraged. By bringing together diverse expertise, this Special Issue aims to foster new ideas and practical advancements in sustainable development.

Dr. Kiadtisak Saenboonruang
Dr. Worawat Poltabtim
Guest Editors

Manuscript Submission Information

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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. Sustainability is an international peer-reviewed open access semimonthly 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

  • recycled materials
  • industrial waste
  • agricultural waste
  • waste management
  • recycling technology
  • sustainable materials
  • renewable materials
  • green technology

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Published Papers (1 paper)

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Research

18 pages, 6124 KiB  
Article
Extraction of Alumina and Alumina-Based Cermets from Iron-Lean Red Muds Using Carbothermic Reduction of Silica and Iron Oxides
by Rita Khanna, Dmitry Zinoveev, Yuri Konyukhov, Kejiang Li, Nikita Maslennikov, Igor Burmistrov, Jumat Kargin, Maksim Kravchenko and Partha Sarathy Mukherjee
Sustainability 2025, 17(15), 6802; https://doi.org/10.3390/su17156802 - 26 Jul 2025
Viewed by 81
Abstract
A novel strategy has been developed for extracting value-added resources from iron-lean, high-alumina- and -silica-containing red muds (RMs). With little or no recycling, such RMs are generally destined for waste dumps. Detailed results are presented on the carbothermic reduction of 100% RM (29.3 [...] Read more.
A novel strategy has been developed for extracting value-added resources from iron-lean, high-alumina- and -silica-containing red muds (RMs). With little or no recycling, such RMs are generally destined for waste dumps. Detailed results are presented on the carbothermic reduction of 100% RM (29.3 wt.% Fe2O3, 22.2 wt.% Al2O3, 20.0 wt.% SiO2, 1.2 wt.% CaO, 12.2 wt.% Na2O) and its 2:1 blends with Fe2O3 and red mill scale (MS). Synthetic graphite was used as the reductant. Carbothermic reduction of RM and blends was carried out in a Tamman resistance furnace at 1650 °C for 20 min in an Ar atmosphere. Reduction residues were characterized using scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), elemental mapping and X-ray diffraction (XRD). Small amounts of Fe3Si alloys, alumina, SiC and other oxide-based residuals were detected in the carbothermic residue of 100% RM. A number of large metallic droplets of Fe–Si alloys were observed for RM/Fe2O3 blends; no aluminium was detected in these metallic droplets. A clear segregation of alumina was observed as a separate phase. For the RM/red MS blends, a number of metallic Fe–Si droplets were seen embedded in an alumina matrix in the form of a cermet. This study has shown the regeneration of alumina and the formation of alumina-based cermets, Fe–Si alloys and SiC during carbothermic reduction of RM and its blends. This innovative recycling strategy could be used for extracting value-added resources from iron-lean RMs, thereby enhancing process productivity, cost-effectiveness of alumina regeneration, waste utilization and sustainable developments in the field. Full article
(This article belongs to the Special Issue Sustainable Materials, Waste Management, and Recycling)
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