Reuse of Mine Tailings Through Geopolymerization Applied to 3D Printing: A Review of Progress, Challenges and Perspectives

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2617 - 2617

Published: March 16, 2025

The increasing global demand for metals, driven by technological progress and the energy transition, has led to an acceleration in expansion of mining metallurgical industry, resulting increase generation mine tailings. This waste, which is heterogeneous composition high contaminant potential, represents significant environmental social challenges, affecting soils, water, geotechnical stability accumulation these tailings poses a problem not only terms quantity, but also physicochemical composition, exacerbates their impact due release heavy ecosystems nearby communities. article reviews potential geopolymerization 3D printing as solution management tailings, offering effective alternative reuse sustainable building materials. Alkaline activation aluminosilicates facilitates formation N–A–S–H C–A–S–H cementitious structures, thereby providing enhanced mechanical strength chemical stability. Conversely, optimizes structural design minimizes material consumption, aligning with principles circular eco-economy facilitating carbon footprint mitigation. present study sets out compare different types influence on geopolymer reactivity, workability, performance. In order achieve this, analyses factors such Si/Al ratio, rheology, setting. addition, alkaline activators, additives, nanoparticles extrusion interlaminar cohesion printed geopolymers evaluated. These are key aspects industrial application. A bibliometric analysis was conducted, revealed growth research this field, highlighting advances optimized formulations, encapsulation hazardous CO2 capture, self-healing geopolymers. identified technical regulatory challenges scalability, emphasizing necessity standardize methodologies assess life cycle findings indicated that tailings-derived viable construction, applications pavements, prefabricated elements, materials resistant extreme environments. technology reduces waste promotes economy decarbonization construction industry.

Language: Английский

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Review on the need for inventories and management of reservoirs of POPs and other persistent, bioaccumulating and toxic substances (PBTs) in the face of climate change

Environmental Sciences Europe, Journal Year: 2025, Volume and Issue: 37(1)

Published: March 22, 2025

Language: Английский

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Effects of Gold Mine Tailings as an Additive on the Tribological Performance of Lubricating Polyurea Grease

Lubricants, Journal Year: 2025, Volume and Issue: 13(4), P. 159 - 159

Published: April 2, 2025

Lubricating greases with varying proportions of gold mine tailings or SiO2 as additives were prepared, and their friction wear performance evaluated using a four-ball tribometer. Scanning electron microscopy three-dimensional surface profilometry employed to analyze the thickener properties patterns on steel balls. The results indicated that addition significantly improved friction-reducing wear-resistant base grease compared SiO2. At optimal concentration 3 wt%, reduced coefficient scar diameter by 43.2% 21.1%, respectively, yielding best among 11 tested samples. Further analysis revealed silicate calcium carbonate particles in deposited surface, forming protective layer. This layer, along film, contributed substantial reductions both wear.

Language: Английский

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Mining Waste in the Southern Urals as a Source of Minerals

The Open Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 19(1)

Published: March 18, 2025

Background In the context of depletion natural resources, issues using man-made waste as a source minerals are becoming especially relevant. The mining and processing industry is one leaders in production waste. Objective purpose this study to demonstrate enrichment from plants tailings dumps gold ore deposits Southern Urals with Au, Cu Zn, which can be used for their re-extraction, also understand need environmental economic feasibility processing. Methods Analytical studies were carried out X-ray fluorescence, atomic absorption energy dispersive methods. Results pyrite slags copper smelters contain increased concentrations Zn. Zn content comparable its percentage currently mined ores. It was established that Ulyuk-Bar deposit contents Au Ag, leads annual losses reaching 150 55 kg, respectively. Conclusion Our research confirms urgency significance problem development comprehensive use resource potential deposits, requires further effective technologies.

Language: Английский

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Sustainable copper supply chains: Evaluating ESG risks through the lens of regulatory compliance and risk assessment strategies

The Extractive Industries and Society, Journal Year: 2025, Volume and Issue: 23, P. 101662 - 101662

Published: April 12, 2025

Language: Английский

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Studies on Grass Germination and Growth on Post-Flotation Sediments

Sustainability, Journal Year: 2025, Volume and Issue: 17(8), P. 3438 - 3438

Published: April 12, 2025

The sediments remaining after copper flotation (here referred to as tailings) are generally characterized by nutrient deficiency and heavy metal enrichment, presenting significant obstacles vegetation establishment the development of sustainable ecosystems. This research aimed evaluate germination growth performance eight grass species on these tailings compared reference conditions. Seed was assessed across tailings, sand, controlled laboratory environments. Initial success determined measuring seedling height root length three weeks sowing in a glasshouse pot experiment. findings revealed that Bromus inermis, catharticus, Elytrigia elongata were capable germinating growing successfully challenging substrate, indicating their potential role land management. Despite demonstrating excellent under test conditions, tectorum deemed unsuitable due its for invasive behavior, which could threaten sustainability revegetation efforts. Furthermore, commonly employed difficult terrains, including Festuca arundinacea, rubra, Lolium perenne, proved entirely ineffective treatment tailings.

Language: Английский

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Revealing soil microbial ecophysiological indicators in acidic environments laden with heavy metals via predictive modeling: Understanding the impacts of black diamond excavation

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 923, P. 171454 - 171454

Published: March 2, 2024

Language: Английский

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Assessment of microbial communities from cold mine environments and subsequent enrichment, isolation and characterization of putative antimony- or copper-metabolizing microorganisms

Frontiers in Microbiology, Journal Year: 2024, Volume and Issue: 15

Published: May 24, 2024

Mining activities, even in arctic regions, create waste materials releasing metals and metalloids, which have an impact on the microorganisms inhabiting their surroundings. Some species can persist these areas through tolerance to meta(loid)s via, e.g., metabolic transformations. Due interaction between meta(loid)s, interest investigation of microbial communities possible applications (like bioremediation or biomining) has increased. The main goal present study was identify, isolate, characterize microorganisms, from subarctic mine sites, tolerant metalloid antimony (Sb) metal copper (Cu). During both summer winter, samples were collected Finnish sites (site A B, tailings, site C, a water-treatment peatland) environmental parameters assessed. Microorganisms Sb Cu successfully enriched under low temperatures (4°C), creating conditions that promoted growth aerobic fermenting metal(loid) tolerating anaerobic respiring organism. Microbial environment Sb/Cu-enriched studied via 16S rRNA amplicon sequencing. Site C had highest number taxa for all expected loss biodiversity occurred when enriching samples, with genera like Prauserella, Pseudomonas Clostridium increasing relative abundances others Corynebacterium Kocuria reducing abundance. From enrichments, 65 putative Sb- Cu-metabolizing isolated, showing at 0.1 mM 10 concentrations 0°C 40°C temperatures. gene sequencing isolates indicated most anaerobically Sb-respiring tolerators related genus . This represents first isolation, our knowledge, Sb-metabolizing cold-tolerant contributes understanding (loid)-tolerant Arctic sites.

Language: Английский

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Synthesis, characterization, and efficacy of alkali-activated materials from mine tailings: A review

Waste Management, Journal Year: 2024, Volume and Issue: 191, P. 23 - 46

Published: Nov. 5, 2024

Language: Английский

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Dry Stacking of Filtered Tailings for Large-Scale Production Rates over 100,000 Metric Tons per Day: Envisioning the Sustainable Future of Mine Tailings Storage Facilities

Minerals, Journal Year: 2023, Volume and Issue: 13(11), P. 1445 - 1445

Published: Nov. 16, 2023

Communities and authorities have been dismayed by globally recorded tailings storage facility (TSF) failures in recent years, which negatively affected the safety of people integrity environment. In this context, obtaining social environmental license to operate TSFs has become a challenging process for mining companies. This promoted trend using mine dewatering technologies industry, with dry stacking filtered being recognized worldwide as one most acceptable, safe, environmentally friendly solutions. article presents new paradigm managing tailings, disruptive futuristic characteristics, considering large-scale industrial production rates over 100,000 metric tons per day (mtpd). Aspects management are discussed, such (i) plant thickening/filtering equipment, (ii) conveyance fixed movable conveyor belts, (iii) construction facility, (iv) implementation Industry 4.0 automation processes. Finally, discusses how solution is applied, advances equipment’s performance well experience gained several operations. The future global that operations high daily will apply technology without dams guarantee sustainability, promote continuity business, ensure communities, conserve

Language: Английский

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