Environmental Issues Associated With Mining Antimony Ngo
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- Environmental Issues Associated With Mining Antimony Ngo
INTRODUCTION. Antimony (Sb) (atomic number 51; atomic mass 121.75 g/mol; density 6.684 g/cm 3; melting point 631°C) occurs naturally as a sulphide ore, stibnite (Sb 2 S 3) and valentinite (Sb 2 0 3).The traditional method of treating the ore is to roast it with charcoal or coke and collect the volatile oxide fume (Sb 4 O 6) from which pure …
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Antimony (Sb), a priority pollutant listed by the U.S. Environmental Protection Agency (USEPA), can cause adverse effects on human health, with particular impacts on skin, eyes, gastrointestinal tract, and respiratory system. In this study, a database of Sb concentrations in the global atmosphere was developed through a …
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The extensive demand for antimony has promoted the massive mining of antimony ore, leaving behind a large number of abandoned mines and waste tailings, the main sources for the serious Sb ...
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Complaints about environmental pollution are among the most frequent causes of conflict between mining companies and local communities. Such impacts are often long …
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2. Mineralogy, Geochemistry, and Availability of Antimony. It is necessary to understand the geological properties of antimony in order to properly assess the impact of related geological processes on public health [28,29].Antimony exists naturally in the Earth's crust and is released into the environment via both natural and …
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Global antimony consumption was estimated to be 160 000 t in 2019 . China is the world's leading antimony producer and also a major user of this metalloid; thus, environmental issues associated with antimony are particularly acute in this country (He et al. 2012). Concurrently, a lot of research is being carried out in China on …
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At present, environmental pollution is a global problem resulting from mining, industrial, agricultural, and military activities. Metals and metalloids are among main sources of the pollution, which can seriously threaten human health (Alloway, 1995). Among other toxic elements, antimony (Sb) is one of the least studied.
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Antimony (Sb) is a harmful element, and Sb pollution is one of the typical environmental issues in China, meaning that understanding of the geochemical behaviors of Sb is the key to control the fate of environmental Sb pollution. Sb tends to migrate in soluble form in the water–sediment system, but the fate of dissolved Sb is poorly known. Duliujiang river …
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Antimony (Sb) is a toxic metalloid, and its pollution has become a global environmental problem as a result of its extensive use and corresponding Sb-mining activities.
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Antimony is a naturally occurring element. It belongs to the group 15 of the Periodic Table of the Elements. Antimony can exist in a variety of oxidation states (−III, 0, III, V) but it is mainly found in two oxidation states (III and V) in environmental, biological and geochemical samples.
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The major environmental problems associated with artisanal mining are heavy metal contamination, erosion and deforestation, air emissions, water pollution, …
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Xikuangshan (XKS) is the world's largest antimony mining region, and its exploitation for hundreds of years has also resulted in serious soil erosion, fragile ecology, contaminated water, and ...
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One of the metals most intensely exploited was antimony, with or without associated gold mineralization. This research intends to verify the extent of the current environmental legacy of ancient …
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The Framework for Responsible Mining is a joint effort by NGOs, retailers, investors, insurers, and technical experts working in the minerals sector. It outlines environmental, human rights, and social issues associated with mining and mined products. The Framework explores state-of-the-art social and environmental improvements, providing …
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Abstract. Antimony (Sb) is introduced into soils, sediments, and aquatic environments from various sources such as weathering of sulfide ores, leaching of …
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Abstract. Antimony (Sb), a priority pollutant listed by the U.S. Environmental Protection Agency (USEPA), can cause adverse effects on human health, with particular impacts on skin, eyes, gastrointestinal …
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1. Introduction. As a metallic element, antimony (Sb) is currently the ninth most mined element in the world and is mainly used in the production of catalysts, flame retardants, batteries, small munitions, alloys and semiconductors (Li et al., 2018; Wang et al., 2018).Sb is one of the priority pollutants that poses significant environment and …
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Results showed that adit waters contained elevated concentrations of Sb reaching up to 13350 µg L−1 from the abandoned Sb mines, and mine wastes contained up to 8792 mg kg−1 Sb from the historical mine dumps are the important sources of S b pollution in the Duliujiang river basin. Antimony (Sb) is a harmful element, and Sb …
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Arsenic (As) and antimony (Sb) are considered as priority environmental pollutants and their accumulation in crop plants particularly in rice has posed a great health risk. This study endeavored to investigate As and Sb contents in paired soil-rice samples obtained from Xikuangshan, the world largest active Sb mining region, situated in China ...
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In the Valongo Belt, with an extension of about 90 km, located very close to Porto, northern Portugal, dozens of ore deposits of various metallic minerals and coal were exploited in the 19th and 20th …
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Sulfur (34 S) and strontium (87 Sr) isotopes have been widely used in coal and multi-metal mining processes to investigate environmental contamination problems in water, soil and air (de Caritat et al., 2005, Dogramaci and Herczeg, 2002, Gammons et al., 2013, Gammons et al., 2010, Gammons et al., 2009). Sulfate has a wide range of …
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Abstract Antimony (Sb) is a harmful element, and Sb pollution is one of the typical environmental issues in China, meaning that understanding of the geochem-ical behaviors of Sb is the key to control the fate of environmental Sb pollution. Sb tends to migrate in soluble form in the water–sediment system, but the fate of dissolved Sb is poorly ...
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Elevated soil concentrations of antimony (Sb) and co-contaminants are frequently encountered where antimony has been mined on a large scale. For instance, the Xikuangshan antimony mine in central South China has sustained, over many centuries, dispersed and spatially variable input of toxic elements into the soil ecosystem. We …
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The problems associated with artisanal mining remain complex as it is difficult to identify and shut down all of these small operations. Furthermore, although artisanal mining can result in dangerous environmental pollution, it does help to alleviate the estimated 40 million people who participate in this industry from poverty.
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Antimony is a toxic metalloid in the group VA of the fifth period of the periodic table. Antimony used in the lead-zinc tailings is mainly stibnite (Sb 2 S 3 ) [2], and many studies reported that ...
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The mining sector of the world plays a pivotal role in economic development and has been relevant historically. Africa alone accounts for more than 30% of the mineral reserve of the world, with strategic minerals spread across the continent (AfDB 2016).The resources available to Africa span the world reserve of gold, diamond, cobalt, phosphate …
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Antimony (Sb) is a harmful element, and Sb pollution is one of the typical environmental issues in China, meaning that understanding of the geochemical behaviors of Sb is the key to control the ...
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The first global-scale assessment of Sb contamination in soil that was related to mining/smelting activities was conducted based on 91 articles that were published between 1989 and 2021.
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1. Pollution sources and emission characteristics1.1. Sb mining and smelting activities. China has the largest reserves of Sb in the world, and it also dominates Sb mining (about 78% of global production capacity) (Dupont et al., 2016).The Sb reserves are relatively concentrated, with 114 Sb mines located within 18 provinces or autonomous …
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In this study, we conducted a narrative review of the occupational, environmental, and toxicological hazards associated with mining exposure to cobalt, lithium, manganese, and nickel to better characterize the risks associated with growing …
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The Mining (Environmental Protection and Conservation) Regulations, 1999, were the first mining laws to expressly address environmental issues in ASM. They sought to protect water sources from
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J-WAFS researchers Scott Odell, a visiting researcher in MIT's Environmental Solutions Initiative, and John Fernández, a professor in MIT's Department of Architecture, are examining climate change, copper mining, and desalination, and their environmental and social impacts on Indigenous communities, glaciers, and agriculture …
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Heavy metals pollution in mining soils seriously threatens the ecological environment and human health worldwide. Phytoremediation is considered to be an ideal method to reduce the toxicity, mobility, and bioavailability of heavy metals in the soils. ... Stabilization of heavy metals in biochar derived from plants in antimony mining area …
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Section snippets Sb(0) oxidation. Although native Sb (i.e., Sb(0)) is uncommon in nature, the use of Sb(0) in munitions (which may contain 0.7–10 wt% Sb as a hardening agent) can lead to localized areas where Sb(0) is present in soils, particularly, at locations associated with military training activities involving small arms, mortars, …
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Redox conditions and speciation affect the fate of antimony in the environment. • The treatment of antimony in environment media is systematically …
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Antimony redox processes in the environment: A critical review of associated oxidants and reductants ... the concentration of Sb in surface water collected near an Sb mining and smelting area in Xikuangshan (China) was as high as 11.4 mg L-1 ... within 5 h of reaction. The solids-associated Sb(V) consisted primarily of Mn(II) 2 …
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