Heavy metals have harmful effects on human health, and exposure to these metals has been increased by industrial and anthropogenic activities and modern industrialization. ... Mercury compounds have many applications in mining for example extraction of gold and some industrial processes. In lamp producing factories, Hg is used …

Recovery of the resources is considered to be a significant thing in the perspective of saving the cost economically and also for sustainable future utilization efficiently. Metals are extracted by mining processes in mines located on all over the world to consummate the needs put forth by the developing society. But mining process was …

The accumulation of mine tailings on Earth is a serious environmental challenge. The importance for the recovery of heavy metals, together with the economic benefits of precious and base metals, is a strong incentive to develop sustainable methods to recover metals from tailings. Currently, researchers are attempting to improve the …

The study investigated the contents of selected heavy metals in top soils and sub-soils around the vicinity of artisanal gold mining site in Minna, Niger state, using standard procedures. Digestion was done using HNO3–H2O2–HCl and heavy metal content using atomic absorption spectrometer. The results obtained showed some extent …

Additionally, chemical agents are used in the mining processes to improve ore recovery and utilization efficiency, which also contributes to the complex pollution of heavy metals in the wastewater, posing a threat to the surrounding ecosystems and water resources. ... Given the long-term dynamic generation of heavy metals in mining areas, …

Phytoremediation is one of the important methods for restoring heavy-metal contaminated soils. Using high-biomass economic plants to restore heavy-metal contaminated soils can have both ecological and economic benefits, with great application prospects. Based on the analysis of current situation and …

Understanding the characteristic heavy metals and their migration-transformation behavior in mining areas is essential for the prevention and control of mining pollution. This study selected a gold mine in the Anqing-Guichi ore-cluster region in the Middle-Lower Yangtze metallogenic belt as the research area, the concentrations, …

1. Introduction. As one of the key elements of the Earth's Critical Zone, the pedosphere is the most active layer on the epigeosphere (Lin, 2011; Xu and Huang, 2009; Wilding and Lin, 2006; Lin et al., 2005), and the healthy development of the soil ecosystem is closely related to human well-being.However, soil pollution has become a serious …

Gold mining is associated with serious heavy metal pollution problems. However, the studies on such pollution caused by gold mining in specific geological environments and extraction processes …

The mining and utilization of coal resources has not only promoted rapid economic development but also poses a potential threat to the ecological environment. The purpose of this study is to clarify the effects both of mining and land use types on the spatial distribution and particular sources of heavy metals in soil, using inverse distance …

Heavy metal mining and process- ... 35% of China's gold reserves, of which 76% of gold and 32.5% of silver is produced by copper mines [7]. Moreover, rare earth elements are essential components of high-tech ... the full exploitation and utilization of …

heavy metals utilization gold mining T11:08:38+00:00; Heavy Metal Pollution from Gold Mines: Environmental . 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 2 Gold Processing and …

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. …

In addition, arsenic and most tested heavy metals have different pollution and ecological risks, especially As and Sb. Compared with the other gold mining areas, the arsenic and the heavy metal sediments in the area of this study have higher pollution and ecological risks. The results of this study show that the local government must monitor ...

Table 6.5 shows the average grade of gold ores at Barrick operations. In 2016, the average grade of gold at major mines owned by Barrick was lower than 4 g/ton. There are many gold miners, including Barrick, that are processing gold ores having less than 1 g/ton of gold. One troy ounce of gold is equal to 31.10 g.

Heavy metals are introduced to the soil through parent rocks and anthropogenic activities. Mining, seepage from landfills, pesticide application, industrial effluents, and irrigation of soil with ...

DOI: 10.1016/J.ECOENV.2005.12.013 Corpus ID: 32557480; Effect of heavy metals on substrate utilization pattern, biomass, and activity of microbial communities in a reclaimed mining wasteland of red soil area.

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 …

1 State Key Laboratory of Comprehensive Utilization of Low-Grade Refractory Gold Ores, Zijin Mining Group Co ... such as As, Pb, Zn, Mn, Cr, and Cd. In the process of copper mining, these coexisting …

1. Introduction. Periodic table consists of heavy metals to a notable portion with high density and atomic weight. Among them, the majorities are found in the biosphere, such as in water, soils, and rocks, and are also released into the surroundings from anthropogenic resources, mostly commercial and industrial.

This work examined heavy metal pollution from a large-scale cyanidation gold mining operation, which is distinguished from artisanal and small-scale amalgamation gold mining, in Jilin Province, China. A total of 20 samples including one background sample were collected from the surface of the mining area and the tailings pond in June 2013.

Uncontrolled artisanal and semi-mechanized mining activities generate growing pressure on water resources. This work investigated the water quality status and the metal contamination of the Lom River water in the vicinity of gold mining area of Bekao, Adamawa region of Cameroon using water quality index (WQI) and five pollutions …

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 ...

PM 2.5 is derived from common sources of atmospheric pollution, such as automotive vehicles, mining operations, biomass burning, and industrial emissions (Nor et al., 2021).PM is harmful to health because it contains chemical compounds, especially PM 2.5, with a high range and strong absorption capacity (Ding et al., 2021).Additionally, PM …

The CEIC database reported that gold production in Myanmar was 1692 kg in 2015 and 1700 kg in 2016. 25 However, there have been few studies of the impacts of gold mining in Myanmar. The aim of the present study was to investigate As, Cd, Hg and Pb concentrations in the soil of placer small-scale gold mining stages in Banmauk …

[14] Chen Y. 2017 Review on Remediation and Safety Utilization of Heavy Metal Pollution of Farmland Soil in China J. Modern Agricultural Science & Technology. Google Scholar [15] Hu M, Wu J Q, Peng P Q et al. 2014 Assessment model of heavy metal pollution for arable soils and a case study in a mining area J. Acta scientiae circumstantiae 34 423-430

The main objective of this study is to assess the level of heavy metals pollution in soil samples collected around gold mines located in Betaré Oya (BO) and Batouri (BA) in Eastern Cameroon. Elemental analysis of soil samples was carried out using Quant´X EDXRF spectrometer. Its sensitivity and accuracy were increased by using the …

Article. Open access. Published: 24 November 2021. Related health risk assessment of exposure to arsenic and some heavy metals in gold mines in Banmauk …

Author: omokay6@yahoo Tel. : 08031957092. ABSTRA. CT. Excessive bioaccumulation of heavy metals in surface water body affect the quality of water and. as a result such water is said to be ...

In this study, chemical and mineralogical characterizations of gold-mine tailings in key mining areas in Mindanao, Philippines were investigated for possible utilization as geopolymeric source material. Results of X-ray fluorescence (XRF) and energy dispersive X-ray spectroscopy (EDS) showed that the mine tailings samples have …