Bioleaching of heavy metals from metal tailings utilizing …
In addition, the non-ferrous metal mining industry worldwide is one of the main sources of heavy metal pollution. Mining produces a large amount of waste, especially fine-grained mineral tailings, which are mostly deposited on the land surface and pose potential long-term environmental challenges. ... Trichoderma viride, and Trichophyton rubrum ...
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The environmental impact of gold mines: pollution by …
Being a precious metal which is found in small quantities, gold mining operations tend to cover wide areas, and thus can inflict environmental damage over a geographically wide area. The …
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Mining wastewater treatment technologies and resource …
Utilization of agro-industrial waste for removal of copper ions from aqueous solutions and mining-wastewater. J. Ind. Eng. Chem ... Assessing phytoremediation potentials of selected plant species in restoration of environments contaminated by heavy metals in gold mining areas of Tanzania. Heliyon, 7 (2021), Article e07979, 10.1016/j.heliyon ...
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Utilization of sulphidic tailings from gold mine as a raw …
Chen et al. (2011) also indicated that the leachability of the heavy metals from sulphidic mine tailings could be eliminated by alkali-activation. While the properties of the mine tailings depend on the mineralogy of the mining site, in the present study the alkali-activation of Finnish mine tailings from a gold mining site was investigated.
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Valorization of waste mill tailings from small-scale mining …
The gold extraction process from small-scale mining yields pulverized rock by-products called mill tailings (Behera et al. 2021).These residues are disposed to be dewatered and pumped to the tailings pond or dam (Qian et al. 2023).Tailings are materials, whether solid, liquid, or a combination of the two, that are separated from the ores during the milling and …
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(PDF) Physicochemical properties, heavy metals, and metal …
Physicochemical properties, heavy metals, and metal-tolerant bacteria profiles of abandoned gold mine tailings in Krugersdorp, South Africa March 2020 Canadian Journal of Soil Science 100(3):1-17
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The environmental impact of gold mines: …
The gold mining plant of Oman was studied to assess the contribution of gold mining on the degree of heavy metals into different environmental media. Samples were collected from the gold mining...
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Toxic Mechanisms of Five Heavy Metals: Mercury, Lead, Chromium, Cadmium
Toxic Effects of Heavy Metals Mercury (Hg) Mercury (Hg) is found in air, water, and soil and exists in three forms: elemental or metallic mercury (Hg 0), inorganic mercury (Hg +, Hg 2+), and organic mercury (commonly methyl or ethyl mercury) (Li R. et al., 2017).Elemental mercury is liquid at room temperature and can be readily evaporated to produce vapor.
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Heavy Metals in the Soils of Placer Small-Scale …
Concentrations of heavy metals associated with gold, such as copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) can increase in the environment as a result of mining activities, leading to …
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Heavy metal contamination in the vicinity of gold mine and …
The Eastern Desert in Egypt is a significant gold-mining region, and its gold mine is one of the world's oldest. The presence of tailings and slag piles in the vicinity of historical mining sites can give rise to environmental risks for the surrounding soil, water, and air. These hazards primarily result from erosion and the interaction between these materials and runoff waters. …
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Heavy Metals – Definition, Natural and Anthropogenic …
Heavy Metals – Definition, Natural and Anthropogenic Sources of Releasing into Ecosystems, Toxicity, and Removal Methods – An Overview Study April 2023 Journal of Ecological Engineering 24(6 ...
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(PDF) Effect of Mining on Heavy Metals Toxicity and Health …
Heavy metal contamination of selected rivers in the mining areas of Ghana was studied. In the study, 44 composite water samples were collected, digested, and analyzed for selected metals using ICP-MS.
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(PDF) Mikoremediasi Menghilangkan Polusi Logam Berat
The utilization of post-mining area causes serious health problem in animals and humans due to heavy metal waste pollution (Ag, As, Cd, Co, Cr, Cu, Hg, Ni, and Pb). Efforts to overcome the pollution of heavy metals on farms can be carried out by preventing and controlling waste in post-mining and industry areas.
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Comprehensive analysis of heavy metal soil contamination in mining …
The contamination of soil with these heavy metal ions introduces significant environmental hazards, ranging from soil and water pollution to the disruption of ecosystems and the release of potentially deleterious substances into the environment (Li et al., 2023).The mining processes associated with copper, zinc, lead, manganese, and iron, extensively utilized in …
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Heavy metal pollution in farmland soils surrounding mining …
Mining activities lead to significant heavy metal pollution in nearby farmland soils, affecting the soil's microbial community and functions. To comprehensively investigate the heavy metal contamination in farmland soils caused by mining activities and the impacts on soil microbial communities and functions, we collected 87 soil samples from farmlands near 29 mining sites …
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Recent advances in the treatment of heavy/precious metal …
Heavy metals are typically defined as metals with densities exceeding 5 g cm −3; therefore, the group of precious metals, including gold, silver, ruthenium, rhodium, palladium, osmium, iridium, and platinum also falls within the heavy metal category [1, 2].Nevertheless, when it comes to pollution and toxicity related to heavy metals, the focus in current environmental literature is not …
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Heavy Metal Pollution from Gold Mines: …
This review focuses on environmental impacts of increasing heavy metal pollution caused by gold mining activities on human health and the environment and how bacteria interact with these metals.
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Assessment of contamination and potential ecological risks of heavy …
Despite the alarming heavy metal contamination of our waters in the mining areas across the country, information on heavy metal pollution status, extent of contamination and its ecological risks using pollution assessment indices are scarcely available which can lead to water quality deterioration and ecosystem degradation.
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The environmental impact of gold mines: …
The gold mining plant of Oman was studied to assess the contribution of gold mining on the degree of heavy metals into different environmental media. Samples were collected from the gold mining ...
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Past, present and future trends in the remediation of heavy-metal …
Utilization of solid bio-waste from local wastewater treatment plants or livestock manure for amending tailings, with high concentrations of HMs, enhancing the properties of the soil to support plant growth for revegetation as well as the recovery of metal from waste, have also been planned by some mining companies in the context of the ...
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Influence of the Artisanal Gold Mining on Soil Contamination with Heavy
Twenty soil samples were collected from North of Atbara (Dar-Mali locality),River Nile State, Sudan (17.82289 to 17.82389N and 33.99974 to 34.02127E) inside and outside gold mining area in order ...
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Multivariate studies and heavy metal pollution in …
Mining generates large volumes of waste, which if not regulated can release toxic metals, causing widespread environmental contamination. This study focused on heavy metal contamination in...
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Utilization of sulphidic tailings from gold mine as a raw …
This method would minimize the storage problems of mining waste dumps and water control structures and increase the stabilization and immobilization of heavy metals (Komnitsas and Zaharaki, 2007). Although several researchers have studied the paste backfill method from sulphidic mine tailings, few have studied the utilization of mining waste as ...
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Machine learning-assisted risk evaluation of heavy metals in …
This study employed machine learning (ML) to thoroughly investigate the impact of informal mining activities on the distribution and pollution status of heavy metals in soils near …
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Heavy Metal Pollution from Gold Mines: …
Mining activities can lead to the generation of large quantities of heavy metal laden wastes which are released in an uncontrolled manner, causing widespread contamination of the ecosystem. Though some heavy metals …
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The environmental impact of gold mines: pollution by heavy metals
The gold mining plant of Oman was studied to assess the contribution of gold mining on the degree of heavy metals into different environmental media. Samples were collected from the gold mining ...
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(PDF) Adsorption of Heavy Metals from Small-Scale Gold …
well-known gold mining districts, namely ... This study was carried out to evaluate and compare the utilization of PNZ and PNB sorbents in ... effectively remove various heavy metals from aqueous ...
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Heavy Metal Pollution from Gold Mines: Environmental …
This review focuses on the effects of heavy metal wastes generated from gold mining activities on the environment and the various mechanisms used by bacteria to counteract the effect of these heavy metals in their immediate environment.
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Bioflocculant production and heavy metal sorption by metal …
Two bioflocculant producing bacterial isolates from mining soil samples were investigated for their application in heavy metal removal. The bacterial isolates were identified as Pseudomonas koreensis and Pantoea sp. using 16S rRNA gene. Cadmium resistant genes cadA and CzcD were detected in Pantoea sp. while P. koreensis harbor CzcD and chrA responsible …
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Arsenic and Heavy Metals in Sediments Affected by Typical Gold Mining …
1. Introduction. Non-ferrous metal mining causes severe contamination of As and heavy metals (HMs). Due to the increasing activity and mobility in water [1,2], sediments are one of the major destinations for As and HMs migration and diffusion in the water [2,3].As and HMs accumulated in sediments are often tens or even hundreds of times the amount in water [3,4,5].
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