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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202091· Surface coal mining accounts for nearly 63% of the 679 total mines in the U.S. (Table 1; National Mining Association, 2019) and dominates both the mining method and coal mine productivity (Table 2). Table 2. Coal mine productivity in the U.S., 1990– (average short tons per miner per hour; National Mining Association, 2019).
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202556· Phosphoric acid (H₃PO₄) is a vital chemical in the mining industry, valued for its role in mineral processing, metal extraction, and wastewater treatment. Its chemical properties …
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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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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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3.1 An introduction to acid mine drainage Iron pyrite, FeS2, also known as ''fool''s gold'', is the most important source of
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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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202051· In a study of the dissolution of chalcopyrite in iron (III) solutions (Li et al., 2016), peroxide was continuously added to control the potential to various values in sulfuric acid solutions with and without a low concentration of iron added initially.
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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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2025630· Geochemistry of sediment precipitated during acid mine drainage-seawater interaction. Implications for metal mining impacts on estuarine systems
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21· Acid mine drainage (AMD) contains high concentrations of heavy metals and sulfates with strong acidity. AMD exists in several major coal-producing countries such as China, the United States, Canada, etc., and it poses significant threaten to the environment and human health owing to it exists in nature for a long time and continues to cause harm after mining. In …
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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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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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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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11· Lactic acid bacteria promoted soil quality and enhanced phytoextraction of Cd and Zn by mustard: A trial for bioengineering of toxic metal contaminated mining soils
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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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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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202051· In a study of the dissolution of chalcopyrite in iron (III) solutions (Li et al., 2016), peroxide was continuously added to control the potential to various values in sulfuric acid solutions with and without a low concentration of iron added initially.
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Introduction Acids are an essential part of chemistry, playing a crucial role in various chemical reactions and industries. When discussing acids, two terms that often come up are "concentrated acid" and "strong acid." While these terms may seem similar, they actually refer to different attributes of acids. In this article, we will explore the characteristics of concentrated acid and …
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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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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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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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11· Acid mining drainage has a serious impact on the environment. Forward osmosis allows the concentration of acid mine waters to favor the formation of enrichment sludges and subsequent selective
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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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1213· As the concentration of anions supplied by the three acids increases, the overall dissolved REE concentration increases dramatically indicating the significant role of anions in the overall leaching behavior of REE compounds.
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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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216· Mineral acid is the liquid discharge that commonly flows from metal and coal mines, including abandoned mines, coal processing sites, …
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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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