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Advanced Hydrometallurgy and Recycling/Utilization of Metallic Resources

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Manufacturing Processes and Systems".

Deadline for manuscript submissions: 20 June 2025 | Viewed by 1608

Special Issue Editors


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Guest Editor
1. National Engineering Research Center of Green Recycling for Strategic Metal Resources, Beijing 100190, China
2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: nickel laterite ore; acid leaching; enhanced oxidation by microbubbles; electrochemical synthesis

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Guest Editor
Department of Chemistry, College of Science, Hebei Agriculture University, Baoding 071001, China
Interests: inorganic energy storage material; sodium ion battery; lithium-ion battery; lithium-sulfur battery

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Guest Editor
1. National Engineering Research Center of Green Recycling for Strategic Metal Resources, Beijing 100190, China
2. Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
Interests: hydrometallurgy; chemical processes; energy materials; extraction and separation of metal resources; utilization of metallurgical solid waste

Special Issue Information

Dear Colleagues,

Hydrometallurgical processes play an essential role in the recycling, recovery, and utilization of metallic resources, which include separating, enriching, leaching, and extracting metals from resources like ores, deposits, concentrates, and industrial and mining wastes.

This Special Issue aims to collect the latest contributions regarding emerging and sustainable hydrometallurgy/extractive metallurgy technologies, as well as applications in the extraction, recovery, and reuse of base, noble, and pure metals, rare earth elements, and energy metallic materials in primary and secondary resources.

Topics of interest for this Special Issue include, but are not limited to, the following:

  • Hydrometallurgical processes with applications in valuable or critical metal recovery, including copper, chromium, uranium, thorium, gold, silver, zinc, cobalt, nickel, lithium, rare earth, etc.
  • Solution concentration and purification, including precipitation, cementation; distillation, adsorption, solvent extraction, ion exchange, electrowinning, etc.
  • Environmentally/sustainable leaching, chemical processes, and economic assessment.

Dr. Zhihui Yu
Dr. Xiaoxian Zhao
Prof. Dr. Jingkui Qu
Guest Editors

Manuscript Submission Information

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Keywords

  • extractive metallurgy
  • hydrometallurgy
  • metal recovery and recycling
  • green chemistry
  • mechanism
  • selective separation
  • kinetics

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Published Papers (2 papers)

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Research

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20 pages, 29111 KiB  
Article
Evaluation of Silver Recovery from High-Sulphur Mining Waste Using Thiourea–Oxalate System
by Erick Jesús Muñoz Hernández, Norman Toro, Martín Reyes Pérez, Iván Alejandro Reyes Domínguez, Aislinn Michelle Teja Ruiz, Mizraim Uriel Flores Guerrero, Jesús Iván Martínez Soto, Gabriel Cisneros Flores and Julio Cesar Juárez Tapia
Materials 2025, 18(2), 347; https://doi.org/10.3390/ma18020347 - 14 Jan 2025
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Abstract
Mine tailings are a byproduct of mineral extraction and often pose an environmental challenge due to the contamination of soil and water bodies with dissolved metals. However, this type of waste offers the opportunity for the recovery of valuable metals such as silver [...] Read more.
Mine tailings are a byproduct of mineral extraction and often pose an environmental challenge due to the contamination of soil and water bodies with dissolved metals. However, this type of waste offers the opportunity for the recovery of valuable metals such as silver (Ag). In the present investigation, an integral analysis of a sample of tailings was carried out, addressing granulometry, elemental composition, neutralization potential (NP), and acid potential (AP), as well as mineralogy, for the dissolution of silver from this type of waste. For this purpose, thiourea (CH4N2S) was used as a leaching agent due to its low toxicity, and potassium oxalate (K2C2O4) was used as an organic additive to improve the leaching of the silver phases (argentite and polybasite) present in the tailings. The effects of CH4N2S and K2C2O4 concentrations, temperature, and pH on the leaching efficiency of silver (Ag), copper (Cu), iron (Fe), and arsenic (As) were systematically studied. The results revealed that the maximum silver dissolution rate reached 90.75% under optimal conditions: 0.2 M L−1 of thiourea and 0.2 M L−1 of potassium oxalate, at 35 °C and a pH of 2. Full article
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Review

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23 pages, 1149 KiB  
Review
Novel and Sustainable Materials for the Separation of Lithium, Rubidium, and Cesium Ions from Aqueous Solutions in Adsorption Processes—A Review
by Małgorzata A. Kaczorowska
Materials 2024, 17(24), 6158; https://doi.org/10.3390/ma17246158 - 17 Dec 2024
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Abstract
The growing demand for alkali metals (AMs), such as lithium, cesium, and rubidium, related to their wide application across various industries (e.g., electronics, medicine, aerospace, etc.) and the limited resources of their naturally occurring ores, has led to an increased interest in methods [...] Read more.
The growing demand for alkali metals (AMs), such as lithium, cesium, and rubidium, related to their wide application across various industries (e.g., electronics, medicine, aerospace, etc.) and the limited resources of their naturally occurring ores, has led to an increased interest in methods of their recovery from secondary sources (e.g., brines, wastewater, waste leachates). One of the dynamically developing research directions in the field of separation of AMs ions from various aqueous solutions is the search for novel, efficient, and “green” materials that could be used in adsorption processes, also on a larger industrial scale. This review concerns the latest achievements (mainly from 2023 to 2024) in the development of innovative adsorption materials (e.g., ion sieves, aluminum-based adsorbents, mineral adsorbents, composites, resins) for the separation of Li+, Cs+, and Rb+ ions from solutions, with particular emphasis on their most important advantages and limitations, as well as their potential impact on the environment. Full article
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