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In this investigation, metals of environmental concern, Cd, Cr, Co, Pb and Cu, are identified in the feed coal of thermal power plant from eastern India. The concentrations (0.56–10.3 µg/g) of these metals are enriched (one- to twofold) in fly and bottom ash during combustion. Additionally, a noticeable presence of Cd, Cr, Co, Pb, and Cu was also o...
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China began entering the 14th Five-Year Plan period in 2021. With the proposed carbon-neutral long-term goal, the strategic position of clean energy is becoming increasingly prominent. using biomass power generation is one of the main application ways. In order to study the mixed combustion process of coal and biomass, this paper takes 300MW lignit...
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... This surge in solid waste production necessitates comprehensive environmental protection measures, as exemplified by India, which annually produces a staggering, 120-150 million tons of coal fly ash generated from 120 existing coal based thermal power plants of fly ash alongside an equivalent quantity of Portland cement [3][4][5]. The composition of fly ash and bottom ash encompasses crucial elements/compounds such as potassium (K), silica (SiO 2 ), sulfur (S), alumina (Al), calcium (Ca), sulfur (S), sodium (Na), iron oxide (Fe 2 O 3 ), and magnesium (Mg) [6][7][8]. ...
Exploring energy efficiency: assessing mechanical and thermal properties of sintered fly ash and clay-based composites, JP Journal of Heat and Mass Transfer 37(3) (2024), 313-328. https://doi. Abstract This study systematically investigates the influence of sintering on the physical and mechanical attributes of clay, both in its pristine state and when blended with varying proportions of fly ash. Employing a diverse array of analytical techniques, encompassing compression tests, measurements of density, porosity, and volume shrinkage, our inquiry seeks to provide a comprehensive elucidation of the alterations and transformations induced by the sintering process, particularly in conjunction with the integration of fly ash. The analysis discerns a noteworthy correlation between escalating sintering temperatures and the augmentation of key mechanical properties. Specifically, an elevation in Young's modulus, compressive stress, density, and volume shrinkage is evident as the sintering temperature increases. Simultaneously, a consistent diminution in porosity is observed, indicating a complex interplay of factors influencing the material characteristics. The elucidation of these intricate relationships contributes significantly to an advanced understanding of the synergistic effects arising from the combined influence of sintering and fly ash incorporation on the physical and mechanical attributes of the composite material. The implications of this investigation extend to diverse applications in material science and engineering, where a precise comprehension of sintering dynamics is paramount for optimizing the performance of clay-based composites.
... Plants don't grow normal in media containing more than 30 mg/kg Pb. Synthetic fertilizers, pesticides, and fuel combustion are the major sources causing Pb contamination of soil (Saha et al., 2022). Plants growing in high Pb concentration exhibit higher levels of ROS such as hydroxyl radical, singlet oxygen, superoxide and peroxide (Mansoor et al., 2022). ...
... Kravchenko et al. (2022) used the ion exchange properties of these materials for removing Cs + , Sr 2+ , Cu 2+ , Co 2+ and Cd 2+ from the water. In another article by Saha et al. (2022) studied the concentration of Cd, Cr, Co, Pb and Cu metals in surface and groundwater in the eastern part of India. Furthermore, they noticed that the concentration of these metals in surface water reached a higher level compared to groundwater. ...
Good quality drinking water is of utmost importance for the survival and development of human society in this modern era of contamination of groundwater throughout the world. However, the problem is enormous in many countries, especially in arid and semi-arid regions of the globe, where a vast number of people purely rely on groundwater for their daily uses including drinking, household, and irrigation purposes. This thematic issue of Environmental Earth Sciences was initiated to comprehensively comprehend the groundwater quality and its contamination process using various scientifically profound methods, so that considerable strategic steps can be implemented to mitigate the sources of pollution as well as revamp the groundwater quality scenarios and also improve the safety and securing the supply of drinking water in many regions. Specifically, studies reported in this thematic issue precisely emphasized on groundwater quality and contamination of anthropogenic and geogenic sources disseminated over an extensive geographic regions including China, India, Pakistan, Korea, Mexico, Iran, South Africa, Ghana, Nigeria, Ukraine, Kuwait, Turkey, and Brazil. The papers which were published in this thematic issue were remarkable and also covered a wide range of topics related to the main theme of the thematic issue/research topic, and these articles will have a broad impact on the sustainable protection of groundwater quality. However, the significant outcome of each contribution in this thematic issue was plainly recapitulated in this article, and more importantly, a few fruitful research directions were also recommended to promote further studies on groundwater contamination and evaluate the suitability of groundwater for various purposes.
... Through the investigation, the effect of some different parameter such as economic growth indexes, population changes, living standard growth on both energy demand and water consumption are discussed. Finally, in the other research which was done in India by Saha et al. (2022), a method is developed for monitoring of heavy metals (Cd, Cr, Co, Pb, and Cu) which are released to water resources from applied coal as feed of thermal power plant. Based on previous studies, clearly, it can be seen that application of AI as water consumption soft-sensing is not considered by other researchers. ...
Worldwide, harmful emissions from coal power plants cause many illnesses contribute to premature deaths burden. Despite its high impact on human health and being a major source of toxic pollutants, coal has been considered a component of global energy for decades. Hence, this work was envisaged to understand the rising environmental and multiple health issues from coal power plants. Studies on the adverse impacts of coal power plants on the environment, including soil, surface water, groundwater and air, were critically evaluated. The health risk from exposure to different pollutants and toxic metals released from the power plant was also demonstrated. The study also highlighted the government initiatives and policies regarding coal power operation and generation. Lastly, the study focused on guiding coal power plant owners and policymakers in identifying the essential cues for the risk assessment and management. The current study found an association between environmental and human health risks due to power generation, which needs intervention from the scientific and medical fields to jointly address public concerns. It is also suggested that future research should concentrate on exposure assessment techniques by integrating source-identification and geographic information systems to assess the health effects of different contaminants from power plants and to mitigate their adverse impact.
Heavy metal pollution in mining areas is a serious environmental concern. The exploration of mine-inhabiting microbes, especially bacteria may use as an effective alternative for the remediation of mining hazards. A highly copper-tolerant strain GKSM13 was isolated from the soil of the Singhbhum copper mining area and characterized for significant copper removal potential and tolerance to other heavy metals. The punctate, yellow-colored, coccoid strain GKSM13 was able to tolerate 500 mg L-1 Cu2+. Whole-genome sequencing identified strain GKSM13 as Micrococcus yunnanensis, which has a 2.44 Mb genome with 2176 protein-coding genes. The presence of putative Cu homeostasis genes and other heavy metal transporters/response regulators or transcription factors may responsible for multi-metal resistance. The maximum Cu2+ removal of 89.2% was achieved at a pH of 7.5, a temperature of 35.5 °C, and an initial Cu2+ ion concentration of 31.5 mg L-1. Alteration of the cell surface, deposition of Cu2+ in the bacterial cell, and the involvement of hydroxyl, carboxyl amide, and amine groups in Cu2+ removal were observed using microscopic and spectroscopic analysis. This study is the first to reveal a molecular-based approach for the multi-metal tolerance and copper homeostasis mechanism of M. yunnanensis GKSM13.
