Leaching characteristics and environmental impact of heavy metals in tailings under rainfall conditions: A case study of an ion-adsorption rare earth mining area

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 281, P. 116642 - 116642

Published: June 27, 2024

Following ion-adsorption rare earth mining, the residual tailings experience considerable heavy metal contamination and gradually evolve into a pollution source. Therefore, leaching characteristics environmental impact of metals in require immediate thorough investigation. This study adopted batch column experiments to investigate behaviour assess on paddy soil, thereby providing scientific basis for protection mining areas. The results showed that Mn, Zn, Pb contents were 431.67, 155.05, 264.33 mg·kg

Language: Английский

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Durability and hardened properties of 3D printed concrete containing bauxite tailings

Materials Today Sustainability, Journal Year: 2024, Volume and Issue: 25, P. 100704 - 100704

Published: Feb. 5, 2024

Language: Английский

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Biopolymer‑carbonaceous composites, progress, and adsorptive mitigation of water pollutants

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 274, P. 133379 - 133379

Published: June 25, 2024

Language: Английский

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Pollution, cumulative ecological risk and source apportionment of heavy metals in water bodies and river sediments near the Luanchuan molybdenum mining area in the Xiaoqinling Mountains, China

Marine Pollution Bulletin, Journal Year: 2024, Volume and Issue: 205, P. 116621 - 116621

Published: July 3, 2024

Language: Английский

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Chemical fractionation and risk assessment of metals in drill cuttings from onshore and offshore oil and gas wells

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 213, P. 117635 - 117635

Published: Feb. 8, 2025

Language: Английский

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Evaluating the impact of mine tailings wastes on the development of sustainable Ultra High Performance Fiber Reinforced concrete

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Feb. 21, 2025

The increasing demand for sustainable construction materials has led to exploring alternative resources, such as mine tailings in ultra-high-performance fiber-reinforced concrete (UHPFRC). Conventional production is associated with significant environmental impact and resource depletion, necessitating the search alternatives. This study investigates effects of incorporating powder (MTP) sand (MTS) substitutions cement quartz on mechanical durability properties UHPFRC. current focuses evaluating workability, compressive strength, indirect tensile modulus rupture, sulfate resistance, autogenous shrinkage, thermal performance, porosity, hydration kinetics, phase composition UHPFRC varying MTP MTS contents. Results indicate that optimal mix 15% 60% enhances strength by 12.49% (165.2 MPa at 90 days), reduces shrinkage 49.28% (1023 microns 180 significantly improves a residual 115.2 mass loss 25.4%. workability tests show decrease flow spread from 274 mm control 221 25% 100% MTS. Indirect increased 23.53% (23.1 rupture improved 23.04% (23.5 days) mix. Mercury intrusion Porosimetry reveals total pore volume, especially larger sizes, highest observed containing 5% 20% heat analysis shows delayed Tmax 30 h 36 MTS, indicating slower more controlled process. X-ray diffraction demonstrates reduction peak intensities, marking transition crystalline amorphous structures content. microstructural characteristics, reduced porosity enhanced stability, contribute material's long-term making it viable option practices.

Language: Английский

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Characteristics and environmental driving factors of plant rhizosphere bacterial communities in typical lead-zinc mine tailings in Southern Guizhou

Human and Ecological Risk Assessment An International Journal, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 20

Published: March 2, 2025

Language: Английский

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Fractionation, chemometric analysis, and sophisticated risk assessment indices to appraise sediment contamination of a tropical mangrove forests, the Red Sea

Marine Pollution Bulletin, Journal Year: 2025, Volume and Issue: 214, P. 117792 - 117792

Published: March 10, 2025

Language: Английский

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Evaluation of Leaching Characteristics of Heavy Metal Ions from Red Mud–Graphite Tailings

Toxics, Journal Year: 2025, Volume and Issue: 13(3), P. 211 - 211

Published: March 14, 2025

The rapid growth of aluminum and graphite industries has generated substantial stockpiles red mud tailings, which pose environmental risks due to their high heavy metal content potential for soil water contamination. This study investigated the leaching behavior metals from these materials post-stabilization using cement a sulfonated oil-based ion curing agent, thereby evaluating suitability safe reuse. Semi-dynamic experiments were employed measure release, supplemented by kinetic modeling discern key mechanisms. findings indicated that concentrations in leachates consistently below regulatory standards, with dynamics influenced dual mechanisms: diffusion ions surface chemical reactions. A coefficient-based analysis further suggested low leachability indices all metals, confirming effective immobilization. These results suggest agent-stabilized mud–graphite tailing composites reduce possess characteristics favorable resource recovery, thus supporting sustainable use industrial applications.

Language: Английский

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Sustainable approaches to tailings remediation: Role of organic fertilizers

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121454 - 121454

Published: March 1, 2025

Language: Английский

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