2025515· Our results highlighted the dual role of citrate as a leaching and protecting agent in metal recovery and the importance of pre-concentration step in enhancing the overall system efficiency. This system can be applied to the intensified resource …
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201511· In addition, it will evaluate the effect of oxidant concentration, the effect of catalytic ions, the role of amino acid type and synergism in amino acid mixtures, the role of pyrite gangue and finally, the adsorption onto carbon from low concentration pregnant leach solutions.
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2025718· Furthermore, as the mining industry shifts towards extracting lower-grade ores and exploring more complex mineral deposits, the role of muriatic acid is expected to evolve. This may involve developing more potent acid formulations or combining muriatic acid with other reagents to enhance its effectiveness in challenging geological conditions.
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Rio Tinto in Spain presents an acid drainage of both natural and artificial origin (mining) Rocks stained by ferrous precipitate from acid mine drainage on …
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Natural oxidation of sulphide mineral wastes during their disposal and storage at the mining sites may result in generation of acid rock drainage (ARD) that may contain high acidity and high concentrations of dissolved metals and sulphates. Due to its chemical composition, ARD poses potential harm to the environment and significant challenges to many mining industries …
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201511· In addition, it will evaluate the effect of oxidant concentration, the effect of catalytic ions, the role of amino acid type and synergism in amino acid mixtures, the role of pyrite gangue and finally, the adsorption onto carbon from low concentration pregnant leach solutions.
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In situ leaching of mine wastes with acidic lixiviants may provide an opportunity to recover additional metals and decontaminate residual material. However, the use of high concentration mineral acids (such as >1 M sulfuric acid) can be harmful to the environment and may necessitate post treatment to remove the acidity from the residual rock.
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202411· Limnotic laterites contain low concentrations of Ni (1–1.6 wt%) and high concentrations of Fe (van der Ent et al., 2013). Therefore, a high concentration of sulfuric acid is required to leach out the Ni in the hydrometallurgical process.
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2024118· The persistent release of water from mines, marked by increased acidity, has significant implications for water quality in freshwater environments, including water bodies at the earth''s surface and underground reservoirs. Today, the extent of acid mine drainage (AMD) pollution has exceeded regional boundaries, transforming into a worldwide environmental …
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920· Effects of lithology and acid mine drainage on Cd concentration and isotope distribution in a large riverine system, Guangxi Province, South China
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111· The acid mine drainage (AMD) resulting from human mining activities has adversely affected across the worldwide. The heavy metals and acidity containe…
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Download Citation | On Apr 1, 2025, K.L. Lecomte and others published Geochemistry of sediment precipitated during acid mine drainage-seawater interaction. Implications for metal mining impacts on
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The following objectives are under investigation: (1) comparison of acid mine waters and naturally acidic springs, (2) determination of whether the dominant control on REEs in acid waters is source-related or post-dissolution process-related, (3) determination of the role of iron and aluminum colloid formation on the REE patterns, (4) address
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200611· This paper describes Acid Mine Drainage (AMD) generation and its associated technical issues. As AMD is recognized as one of the more serious environmental problems in the mining industry, its causes, prediction and treatment have become the focus of a number of research initiatives commissioned by governments, the mining industry, universities and …
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51· Acid mine drainage (AMD) is the most common cause of mining activities taking place in different countries across the world, which results in …
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2019625· One such process is the generation of acid mine drainage (AMD). AMD is very common in many coal mining districts and results from the exposure and oxidation of pyrite during mining. During the generation and migration of AMD, liberated sulfuric acid mobilizes several metal ions including REEs.
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2 · Concentrated sulfuric acid, in particular, poses a significant risk due to its high acidity and ability to cause severe burns upon contact with skin or eyes. In this article, we will discuss some important safety measures that should be followed when working with concentrated sulfuric acid to ensure the well-being of laboratory personnel and
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91· The recovery of sulfuric acid from wastewater holds great importance due to its potential to be reused in the mining industry. The mineral acid is a chemical widely used in ore processing but also other industrial segments, such as fertilizer production.
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17 · Discover the three stages of gold extraction, including the vital beneficiation process. Learn how ore becomes pure gold through mining, concentration, and refining.
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2024218· What is a Strong Acid Strong acids play an essential role in chemistry due to their ability to readily donate protons, exhibiting a high degree of ionization in aqueous solutions. Common strong acids include sulfuric acid (H 2 SO4), hydrobromic acid (HBr), hydroiodic acid (HI), and perchloric acid (HClO 4).
WhatsAppGet PriceGet A Quote2024215· Acid mining drainage (AMD) occurs when sulfide minerals (such as pyrite, etc.) are exposed to air and oxidized by oxygen and water in the presence of microorganisms (Daraz et al., ). Continuous discharge of AMD, which contains highly concentrated metals and …
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2025630· Geochemistry of sediment precipitated during acid mine drainage-seawater interaction. Implications for metal mining impacts on estuarine systems
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202491· The temperature played a crucial role in the leaching kinetics of copper, lead, and iron from gravity-concentrated waste printed circuit boards in citrate acid–peroxide media, which had a metallic content exceeding 90wt% [62].
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Hydrogen peroxide is an important process agent for the mining industry. It is often used as an oxidant in metallurgical process steps such as ore leaching, …
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2019625· One such process is the generation of acid mine drainage (AMD). AMD is very common in many coal mining districts and results from the exposure and oxidation of pyrite during mining. During the generation and migration of AMD, liberated sulfuric acid mobilizes several metal ions including REEs.
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2025321· Currently, millions of tons of iron-rich laterite ore are considered waste in the mining industry, and the sector is seeking technological solutions to use them. Atmospheric acid leaching is a potential alternative to obtain cobalt and nickel from laterite ore due to its low implementation and maintenance costs compared to conventional industrial methods. …
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111· Abstract Acid mine drainage has always been considered to be toxic to the environment. This paper highlights its potential role from a water resource perspective in alleviating water supply issues in the Witwatersrand gold mining region of South Africa.
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Introduction Everyone who has worked with and/or prospected for gold has on at least a few occasions been forced to use acids or bases in one form or another. These chemicals can be indispensable for cleaning concentrates, cleaning mercury, recovering mercury, gold, silver from solutions of the salts and hundreds of other applications, many of which most of us are not …
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