Impact of copper mining wastes in the Amazon: Properties and risks to environment and human health

Covre, Watilla Pereira; Ramos, Sílvio Júnio; Souza, Edna Santos de; Martins, Gabriel Caixeta; Teixeira, Orivan Maria Marques; Amarante, Cristine Bastos do; Dias, Yan Nunes; Fernandes, Antônio Rodrigues

doi:10.1016/j.jhazmat.2021.126688

Cited by 46 publications

(9 citation statements)

References 75 publications

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“…Then, TRC values were compared with the permissible reference values (USEPA, 2001). We decided to use a single model for each element, avoiding the use of metal‐specific models in order to obtain results comparable with previously published studies (Covre et al, 2021; E. S. de Souza et al, 2017). Calculated TCR values greater than 1 × 10 −4 were considered to pose unacceptable risks (with high certainty), whereas values lower than 1 × 10 −6 were considered to pose insignificant risks (with high certainty), and values ranging between 1 × 10 −4 and 1 × 10 −6 were considered to pose potential risks (Fryer et al, 2006; Hu et al, 2012).…”

Section: Methodsmentioning

confidence: 93%

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Human health risk assessment of metals and metalloids in mining areas of the Northeast Andean foothills of the Ecuadorian Amazon

Galarza

Moulatlet

Rico

et al. 2022

Integr Envir Assess & Manag

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This article is part of the special series "Diversity of Knowledge for a Sustainable Future in Latin America" and highlights timely research presented at the virtual SETAC Latin America 14th Biennial Meeting (2021). These articles reflect the urgent need to combine different knowledge sources and expertise to face current environmental challenges, decision-making, and problem solving. Risk, recovery, restoration, modeling, regulations, anthropic impact, and human health are some of the global environmental issues covered in this special series.

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Section: Methodsmentioning

confidence: 93%

“…Then, TRC values were compared with the permissible reference values (USEPA, 2001). We decided to use a single model for each element, avoiding the use of metal-specific models in order to obtain results comparable with previously published studies (Covre et al, 2021;E. S. de Souza et al, 2017).…”

Section: Carcinogenic and Noncarcinogenic Risksmentioning

confidence: 99%

Human health risk assessment of metals and metalloids in mining areas of the Northeast Andean foothills of the Ecuadorian Amazon

Galarza

Moulatlet

Rico

et al. 2022

Integr Envir Assess & Manag

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“…And with high levels of potentially toxic elements released in copper waste, improper disposal threatens ecosystems and human health. Human exposure to mining areas, with Ba concentrations, and increased contamination and risk of As, Ti, and mercury concentrations [22].…”

Section: Impact On Humansmentioning

confidence: 99%

Hazards Caused by Mining Activities and Corresponding Treatment Technologies

Kong¹,

Xiong²

2022

HSET

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Mining operation brings great economic benefits to human society and seriously threatens the health of the ecological environment. It is urgent to restore the ecosystem and the treatment of the ecological environment in the mining area. Most academic articles only focus on researching a specific mine area, and the solutions proposed are single and not universal, which is difficult to use for reference by other mine restoration work. Therefore, based on a broader perspective, this paper comprehensively and systematically summarizes the public ecological environment problems and treatment methods of different mining operations. The main work is as follows: (1) through the comparative analysis of many mining academic articles, the main environmental hazards are summarized. This paper mainly introduces the threat of mining to the human living environment from the aspects of water source, soil, and biology. (2) Referring to different mining area restoration practices and mining waste treatment cases, the author combined with the main hazardous substances produced by mining and summarized the effective treatment methods and intervention means. This paper summarizes the methods to reduce Mining Hazards in detail from the perspectives of physics, chemistry, biology, and government. These summary contents have extremely important guiding significance for the restoration of the ecological environment of the mining area and the reuse of waste mining resources to maintain the orderly circulation of the ecological environment and realize the sustainable development of the mining area.

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“…Though found in two oxidation states in nature, it is usually found in its monovalent form (Cu + ), which is required by various organisms for essential biological functions, as well as a co-factor for many enzymes, albeit in low concentrations, as elevated levels of Cu tend to induce cellular toxicity and can result in cell death ( Zhao et al, 2010 ). Increasing levels of Cu in our environment have resulted in its pollution, which has since been aggravated due to many anthropogenic and natural factors ( Izydorczyk et al, 2021 ; Covre et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Harnessing the Potential of Bacillus altitudinis MT422188 for Copper Bioremediation

et al. 2022

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The contamination of heavy metals is a cause of environmental concern across the globe, as their increasing levels can pose a significant risk to our natural ecosystems and public health. The present study was aimed to evaluate the ability of a copper (Cu)-resistant bacterium, characterized as Bacillus altitudinis MT422188, to remove Cu from contaminated industrial wastewater. Optimum growth was observed at 37°C, pH 7, and 1 mm phosphate, respectively. Effective concentration 50 (EC50), minimum inhibitory concentration (MIC), and cross-heavy metal resistance pattern were observed at 5.56 mm, 20 mm, and Ni > Zn > Cr > Pb > Ag > Hg, respectively. Biosorption of Cu by live and dead bacterial cells in its presence and inhibitors 1 and 2 (DNP and DCCD) was suggestive of an ATP-independent efflux system. B. altitudinis MT422188 was also able to remove 73 mg/l and 82 mg/l of Cu at 4th and 8th day intervals from wastewater, respectively. The presence of Cu resulted in increased GR (0.004 ± 0.002 Ug−1FW), SOD (0.160 ± 0.005 Ug−1FW), and POX (0.061 ± 0.004 Ug−1FW) activity. Positive motility (swimming, swarming, twitching) and chemotactic behavior demonstrated Cu as a chemoattractant for the cells. Metallothionein (MT) expression in the presence of Cu was also observed by SDS-PAGE. Adsorption isotherm and pseudo-kinetic-order studies suggested Cu biosorption to follow Freundlich isotherm as well as second-order kinetic model, respectively. Thermodynamic parameters such as Gibbs free energy (∆G°), change in enthalpy (∆H° = 10.431 kJ/mol), and entropy (∆S° = 0.0006 kJ/mol/K) depicted the biosorption process to a feasible, endothermic reaction. Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and Energy-Dispersive X-Ray Spectroscopy (EDX) analyses revealed the physiochemical and morphological changes in the bacterial cell after biosorption, indicating interaction of Cu ions with its functional groups. Therefore, these features suggest the potentially effective role of B. altitudinis MT422188 in Cu bioremediation.

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Impact of copper mining wastes in the Amazon: Properties and risks to environment and human health

Cited by 46 publications

References 75 publications

Human health risk assessment of metals and metalloids in mining areas of the Northeast Andean foothills of the Ecuadorian Amazon

Human health risk assessment of metals and metalloids in mining areas of the Northeast Andean foothills of the Ecuadorian Amazon

Hazards Caused by Mining Activities and Corresponding Treatment Technologies

Harnessing the Potential of Bacillus altitudinis MT422188 for Copper Bioremediation

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