Contamination of Lead and Mercury in Coal Basin of India

Sharma, R. P.; Ramteke, Shobhana; Patel, Khageshwar Singh; Kumar, Sonu; Sarangi, Bighnaraj; Agrawal, Shankar Gopal; Lata, Lesia; Huber, Miłosz

doi:10.4236/jep.2015.612124

Cited by 11 publications

(6 citation statements)

References 43 publications

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“…Historically, mining for gold and Hg led to high Hg concentrations in these mining areas, which may explain the high Hg concentrations in some samples from Central Italy, Northwest England and Eastern Slovakia. Moreover, the natural/background Hg level was 0.08 mg/ kg in Brazil [121], 0.05 mg/kg in India [122], 0.23 mg/kg in New Zealand [123], 0.11 mg/kg in the Norwegian Arctic [124] and 0.4 mg/kg in Paris [125]. Most soil Hg was found as soil matrix-bound divalent Hg (Hg II ), whereas elemental Hg (Hg 0 ) was undetectable in soils [85,99].…”

Section: Mercury In Soilmentioning

confidence: 97%

Mercury in the terrestrial environment: a review

2020

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Background Environmental contamination by mercury is and will continue to be a serious risk for human health. Pollution of the terrestrial environment is particularly important as it is a place of human life and food production. This publication presents a review of the literature on issues related to mercury pollution of the terrestrial environment: soil and plants and their transformations. Results Different forms of atmospheric Hg may be deposited on surfaces by way of wet and dry processes. These forms may be sequestered within terrestrial compartments or emitted back into the atmosphere, and the relative importance of these processes is dependent on the form of Hg, the surface chemistry, and the environmental conditions. On the land surface, Hg deposition mainly occurs in the oxidized form (Hg2+), and its transformations are associated primarily with the oxidation–reduction potential of the environment and the biological and chemical processes of methylation. The deposition of Hg pollutants on the ground with low vegetation is as 3–5 times lower than that in forests. The estimation of Hg emissions from soil and plants, which occur mainly in the Hg0 form, is very difficult. Generally, the largest amounts of Hg are emitted from tropical regions, followed by the temperate zone, and the lowest levels are from the polar regions. Areas with vegetation can be ranked according to the size of the emissions as follows: forests > other areas (tundra, savannas, and chaparral) > agricultural areas > grassland ecosystems; areas of land devoid of vegetation emit more Hg than those with plants. In areas with high pollution, such as areas near Hg mines, the Hg content in soil and plants is much higher than in other areas. Conclusions Mercury is recognized as a toxic, persistent, and mobile contaminant; it does not degrade in the environment and becomes mobile because of the volatility of the element and several of its compounds. Atmospheric contamination by mercury continues to be one of the most important environmental problems in the modern world. The general conclusions were drawn from a review of the literature and presented in this paper.

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Section: Mercury In Soilmentioning

confidence: 97%

Mercury in the terrestrial environment: a review

2020

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“…138 Three major modes of arsenic biotransformation occurred in the environment: redox transformation between As( iii ) and As( v ), the reduction and methylation of As, and the bioproduction of organ arsenic compounds. 8,139–141 Arsenic contamination with sources in water 142–169 of some locations over the world are summarized in Table 3. Concentration range of As in water samples around the world is illustrated in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…4 In the particular case of China, Bangladesh and India, values of As content in field, surface, pond, ground, sewage and industrial waste water have been reported, and ascribed to mineralization of arsenopyrite. 158–160,165,167,169,172–177…”

Section: Resultsmentioning

confidence: 99%

A review on arsenic in the environment: contamination, mobility, sources, and exposure

et al. 2023

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“…Deng [8] selected six pulverized coal boilers from four power plants in China for research, which showed that more than 96.99% of Cl in coal-fired power plants was released into the flue gas, and the dust collector and limestone-gypsum wet desulfurization device have a synergistic effect on the removal of Cl in the flue gas. Meanwhile, researchers have focused on the relationship between the Cl and other factors (e.g., ash content, concentration of other released components, combustion temperature) [9][10][11][12][13][14][15]. The types of the coal, as well as the combustion characterization of each region, could directly affect the Cl release characterization, while related studies in Anhui Province, the 8th most populous province in China, are still lacking.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Chlorine Releasing from Coal-Fired Power Plant

Sun

Fang

2021

Atmosphere

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Chlorine (Cl) released from coal-fired power plants can be harmful to power equipment, the ecological environment and human health. Here, we investigated the Cl releasing characteristics from four coal-fired power plants (CFPPs) in China’s Anhui province based on an ion chromatography analysis of the combustion by-production samples collected from different locations of the power plants. The results showed that Cl content in coals was low (198–367 μg·g−1), which positively correlated with the contents of lead, mercury and total sulfur, but was weakly correlated with the moisture and ash yield in coal. The releasing rate of Cl during coal combustion was highly correlated with temperature and volatile matter, and most Cl is transferred into the flue gas. Dust collector and wet flue gas devices equipped in the CFPPs were robust for removing Cl in the particulate phase, and the fabric filter showed a higher removal efficiency than the electrostatic precipitator. This study can provide theoretical support for Cl pollution control in coal-fired power plants.

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Contamination of Lead and Mercury in Coal Basin of India

Cited by 11 publications

References 43 publications

Mercury in the terrestrial environment: a review

Mercury in the terrestrial environment: a review

A review on arsenic in the environment: contamination, mobility, sources, and exposure

Characteristics of Chlorine Releasing from Coal-Fired Power Plant

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