Nanomineralogy of evaporative precipitation of efflorescent compounds from coal mine drainage

Silva, Luis; Pinto, Diana; Dotto, Guilherme Luiz; Hower, James C.

doi:10.1016/j.gsf.2020.05.002

Cited by 10 publications

(18 citation statements)

References 34 publications

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“…Considering that in the state of Rio Grande do Sul, where the recycling company is located, more than 90% of the manufactured cement uses coal-combustion fly ashes, it is believed that such elements, as well as rare phosphates and Fe-NPs, are derived from coal ashes. This hypothesis is based on the fact that several studies of Brazilian coals and coal by-products have detected these elements and minerals [46,[50][51][52][53][54][55].…”

Section: Resultsmentioning

confidence: 99%

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Indoor Nanoparticle Characterization in Construction Waste Recycling Companies over Time

et al. 2021

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Building activity is a significant source of atmospheric contamination by ultrafine dust. Cognizant of this fact, those active in the use and recycling of construction materials must be aware of the risks associated with exposure to nanoparticles (NPs) and ultra-fine particles (UFPs), as well as the associated health impacts. This work analyzed NPs and UFPs generated in a small building-material recycling company using high-resolution electron microscopes and X-ray Diffraction. A self-made passive sampler (LSPS) that can obtain particulate samples without physical and morphological changes, especially where there is a suspension of particulate material, was used in this study. A total of 96 particulate samples, using the LSPS for three months in four seasons, were collected during the study. Thus, the dry deposition of the particles, which are considered highly harmful to human health, was found in each of the four seasons of the year. It is suggested that for future research, the toxicological evaluations of the particulates in the construction industry should be investigated through the consideration of measures to control and mitigate the health risks of workers regarding exposure to NPs and UFPs.

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Section: Resultsmentioning

confidence: 99%

“…The HR-TEM was used, containing the EDS and XRD, with Cu-Kα radiation (λ = 1.54 Å). To perform the spectroscopy, the Raman method was used to order the molecules of the analyzed particles [54,55].…”

Section: Methodsmentioning

confidence: 99%

Indoor Nanoparticle Characterization in Construction Waste Recycling Companies over Time

et al. 2021

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“…HR-TEM is a powerful analytical technique that provides a better understanding of the detailed chemistry of the potentially strongly bioreactive component of atmospheric particulate matter [38,48]. The combined X-Ray Diffraction (XRD) and advanced electron microscopy (AM) techniques, demonstrates the importance of nanomineralogy in understanding different circumstances of coal contamination [49].…”

Section: Discussionmentioning

confidence: 99%

Geochemical and Morphological Evaluations of Organic and Mineral Aerosols in Coal Mining Areas: A Case Study of Santa Catarina, Brazil

et al. 2022

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Numerous researchers have described the correlation between the short-term contact of nano-particulate (NP) matter in diverse coal phases and amplified death or hospitalizations for breathing disorders in humans. However, few reports have examined the short-term consequences of source-specific nanoparticles (NPs) on coal mining areas. Advanced microscopic techniques can detect the ultra-fine particles (UFPs) and nanoparticles that contain potential hazardous elements (PHEs) generated in coal mining areas. Secondary aerosols that cause multiple and complex groups of particulate matter (PM10, PM2.5, PM1) can be collected on dry deposition. In this study, scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HR-TEM) were employed to detect and define the magnitude of particulate matters on restaurants walls at coal mines due to weathering interactions. The low cost self-made passive sampler (SMPS) documented several minerals and amorphous phases. The results showed that most of the detected coal minerals exist in combined form as numerous complexes comprising significant elements (e.g., Al, C, Fe, K, Mg, S, and Ti), whereas others exist as amorphous or organic compounds. Based on the analytical approach, the study findings present a comprehensive understanding of existing potential hazardous elements in the nanoparticles and ultrafine particles from coal mining areas in Brazil.

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“…Particulates (fly ash), and fugitive dust released are a risk to humans, animals, and the environment. Coal dust are respiratory irritants that have been linked to black lung disease, chronic obstructive pulmonary disease, and silicosis [70]. Likewise, the potential health impacts of nanoparticles generated during coal mining and coal combustion continue to raise questions [71], and reports of increasing human morbidity and mortality in people living near and far from coal power plants owing to air pollution are disturbing [72].…”

Section: Airmentioning

confidence: 99%

Perspective Chapter: The True Cost of Coal – Should Ego Veto Eco?

Iji

2024

Recent Advances for Coal Energy in the 21st Century

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There is an urgent need to address the ever-growing concerns about the long-term impacts of coal mining as a cheap energy source in the 21st century because the consequence of inaction threatens the health of the environment, which is inextricably linked to human health. The discovery of the world’s largest solid fuel no doubt brought about industrial and modern technology revolution, but its cost on air, water, land, ecosystem, animal, and human health has brought about new realities that intreat urgent action. As humans, we sit on top of the food chain perpetuating our dominance over other species and studies have shown that with regards to the battle for the earth, human needs come first. To maintain a sustainable ecosystem, we need to foster a mutually beneficial relationship that promotes both the health and sustainability of our environment. A targeted transition away from coal to cleaner forms of energy will undeniably benefit the ecosystems, however appropriate measures are needed to continually reduce the environmental footprint, of the most available energy source so we can protect both the environment and human health.

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Nanomineralogy of evaporative precipitation of efflorescent compounds from coal mine drainage

Cited by 10 publications

References 34 publications

Indoor Nanoparticle Characterization in Construction Waste Recycling Companies over Time

Indoor Nanoparticle Characterization in Construction Waste Recycling Companies over Time

Geochemical and Morphological Evaluations of Organic and Mineral Aerosols in Coal Mining Areas: A Case Study of Santa Catarina, Brazil

Perspective Chapter: The True Cost of Coal – Should Ego Veto Eco?

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