Nanominerals, fullerene aggregates, and hazardous elements in coal and coal combustion-generated aerosols: An environmental and toxicological assessment

Saikia, Jyotilima; Narzary, Bardwi; Roy, Sonali; Bordoloi, Manobjyoti; Saikia, Pallabi; Saikia, Binoy K.

doi:10.1016/j.chemosphere.2016.08.086

Cited by 51 publications

(22 citation statements)

References 42 publications

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“…So, the fuel consumed in old technology brick kilns pumps out the harmful noxious gases such as sulfur dioxide (SO2), carbon dioxide (CO2) (Nepal et al, 2019), carbon monoxide (CO) (Guttikunda et al, 2013), particulate matters (PM) (Aslam et al, 1994;Suresh et al, 2016), volatile organic compounds (VOCs) (Salve et al, 2007), oxides of nitrogen (NOx) (Khan and Vyas, 2008), sulfur (SOx), carbon (COx) (Sanjel et al, 2016), polycyclic aromatic hydrocarbons (PAHs) (Saikia et al, 2016), dioxin (Khan et al, 2015), and furans (Hilten et al, 2008). In addition, stack and fugitive emissions (Rajarathnam et al, 2014;Chen et al, 2017) are discharged from old technology brick kilns during the different process (Darain et al, 2016) such as firing (Sanjel et al, 2017), loading and unloading bricks (Khan et al, 2018), coal crushing (Kumbhar et al, 2014;Pokhrel and Lee, 2014), and cleaning ash of trench (Mondal et al, 2017).…”

Section: Brick Kilns In Punjabmentioning

confidence: 99%

Brick Sector and Air Quality: An Integrated Assessment towards 2020 Challenge of Environment Development

Pervaiz

Akram

Khan

et al. 2021

Environ. Nat. Resour. J.

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Brick sector is a mainstay of the urban economy of Punjab. The traditional technology of brick making emits a lot of toxic gases and smoke particulates into air. Hence, the Government of the Punjab, Pakistan announced a ban on low technology brick kiln operations during winter season by the end of December 2020. Initially, the existing set up of brick kilns and air pollution levels were evaluated before and during lockdown period using spatial application. Further, environmental parameters such as aerosols, carbon monoxide, ozone, sulfur dioxide and carbon dioxide were determined to analyze the air quality, including metrological factors. Results of the study exhibited that the upper and central regions of Punjab are the major hubs of brick kilns. So, the level of air quality was inconsistent in the study period due to the existence of large mushrooms of brick kilns. Further, despite lockdown the highest concentration of carbon monoxide was recorded in the eastern side of the province, such as Kasur, Lahore, and Sheikhupura. The level of aerosols also fluctuated and shifted its trends in the central and southern part of the province. While SO2 and CO2 level declined and revealed a satisfactory level of air quality during shutdown. On the other hand, no significant relation to metrological factors, such as rain, is involved in the pollution reduction. Conclusively, the findings of the present study encourage the government agencies to realign the stringent control measures to improve the quality of air in the winter months using the experience of quarantine in 2020.

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Section: Brick Kilns In Punjabmentioning

confidence: 99%

Brick Sector and Air Quality: An Integrated Assessment towards 2020 Challenge of Environment Development

Pervaiz

Akram

Khan

et al. 2021

Environ. Nat. Resour. J.

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“…Coal is a combustible sedimentary rock that is largely formed from plant debris [1]. It is made up of carbon, hydrogen, oxygen, nitrogen, and sulfur, as well as small amounts of various metals and radioactive materials [1,2]. Coal is mined to meet the needs of the world’s increasing demand for fuel.…”

Section: Introductionmentioning

confidence: 99%

Respiratory Health in Adults Residing Near a Coal-Burning Power Plant with Coal Ash Storage Facilities: A Cross-Sectional Epidemiological Study

Hagemeyer

Sears

Zierold

2019

IJERPH

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Coal ash, the byproduct of burning coal made up of small particles, including heavy metals and radioactive elements, is discarded in open-air landfills where it can be emitted into the air, contributing to air pollution in the surrounding community. Few regulations exist regarding the storage, disposal, and transport of coal ash. There is limited research on the health impacts of coal ash exposure on communities. The purpose of this study was to examine the prevalence of respiratory symptoms among adults exposed to coal ash and non-exposed adults. A cross-sectional epidemiological study was conducted among two populations: one exposed to coal ash and one not exposed to coal ash. Perception of health (p-Value < 0.0001), cough (Adjusted Odds Ratio (AOR) = 5.30, 95% Confidence Intervals (CI) = 2.60–11), shortness of breath (AOR = 2.59, 95% CI = 1.56–4.31), hoarseness (AOR = 4.02, 95% CI = 2.45–6.60), respiratory infections (AOR = 1.82, 95% CI = 1.14–2.89), and mean overall respiratory health score (p-Value < 0.0001) were all statistically significantly greater in exposed adults (N = 231) when compared to non-exposed adults (N = 170). Adults residing near the coal ash facility were more likely to report respiratory symptoms than the non-exposed population. More research on the health impact of coal ash and storage regulations needs to be conducted.

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“…Elements in coal have long been investigated by geologists for preserved geological information, release of toxic elements during utilization process, and the potential economic significance of specific valuable elements [44][45][46][47][48][49]. The distribution of elements and minerals in coal seams is influenced by both syngenetic and epigenetic geological factors, for instance, the syngenetic inputs of terrigenous debris, mesotrophic anoxic conditions, volcanic ashes etc., and the epigenetic factors of igneous intrusion, circulating ground water etc.…”

Section: Introductionmentioning

confidence: 99%

Geochemical Alteration and Mineralogy of Coals under the Influence of Fault Motion: A Case Study of Qi’nan Colliery, China

Liu

Jiang

2019

Minerals

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Geochemical characteristics of rocks in fault zones have been extensively studied, while there are limited studies on coal occurring in fault zones of underground coal mine. In this study, five coal samples were carefully collected from a reverse fault zone in Qi’nan colliery. Systematical detection methods were employed to analyze the different chemical and physical characteristics of fault-related coal samples. Through comparative analysis, the following insights are obtained. Three subdivided fault zones were classified according to the deformation characteristics of coal samples. Frictional heat and strong ductile deformation generated by fault motion led to the dissociation of phenol and carboxyl groups in coal molecules, which sharply decreased the concentrations of elements Co and Mo bound to these functional groups in zone I. The modified pore-cleat system in zone I with higher pore volume and lower permeability allowed solutions containing enriched trace elements to migrate through zone I locally. Concentrations of HREE, MREE and related elements associated with the invasive solutions showed significant positive anomalies in zone I. Precipitation and smearing of clay minerals in zone I led to poorer connectivity. Disruption and delamination of laminar clay minerals by strong compression-shear stress significantly increased the adsorption sites for related elements, especially the HREE and MREE. Nano-scale clay minerals resulting from stress-induced scaly exfoliation also enhanced the retention capability of REE in zone I.

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Nanominerals, fullerene aggregates, and hazardous elements in coal and coal combustion-generated aerosols: An environmental and toxicological assessment

Cited by 51 publications

References 42 publications

Brick Sector and Air Quality: An Integrated Assessment towards 2020 Challenge of Environment Development

Brick Sector and Air Quality: An Integrated Assessment towards 2020 Challenge of Environment Development

Respiratory Health in Adults Residing Near a Coal-Burning Power Plant with Coal Ash Storage Facilities: A Cross-Sectional Epidemiological Study

Geochemical Alteration and Mineralogy of Coals under the Influence of Fault Motion: A Case Study of Qi’nan Colliery, China

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