##tihuan2##Acidic pollution from gangue oxidation has become a primary environmental problem in coal mining areas in China. The use of microorganisms to remediate acidic pollution in coal gangue piles has been indicated to be effective, but environmental differences and carbon sources in different mining areas have become important …
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##tihuan2##This study studied the characteristics and source apportionment of heavy metal pollution in the agricultural soil surrounding a gangue coal heap in Chongqing, China by using absolute principal ...
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##tihuan2##Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process. Coal …
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##tihuan2##Coal is a black or brownish-black sedimentary rock that can be burned for fuel and used to generate electricity.It is composed mostly of carbon and hydrocarbons, which contain energy that can be released through combustion (burning). Coal is the largest source of energy for generating electricity in the world, and the most abundant fossil …
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##tihuan2##Coal gangue A is located upstream from Coal gangue B, and heavy Cd isotopes were more enriched in Coal gangue B samples compared to that of Coal gangue A, with their δ 114/110 Cd of −0.081 ‰ and − 0.330 ‰, respectively (δ 114/110 Cd coal gangue B-coal gangue A = 0.249 ‰), implying that the heavy Cd isotopes of the …
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##tihuan2##Corresponding Author. Nong Zhang [email protected] School of Physics and New Energy, Xuzhou University of Technology, Xuzhou, Jiangsu, China. National Key Laboratory of Fine Coal Exploration and Intelligent Development, China University of Mining and Technology, Xuzhou, Jiangsu, China
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##tihuan2##Coal is currently the main fuel energy source, accounting for approximately 70% of the national energy consumption in China (Wang et al., 2017).Mining and washing of coal results in a large amount of coal gangue, accounting for approximately 10–15% of the total domestic coal production (Namaghi and Li, 2016; Li and Wang, 2019).It has …
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##tihuan2##Coal gangue is a kind of solid waste with a low calorific value produced in the process of coal mining and washing. According to statistics, by the end of 2019, China's accumulated amount of ...
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##tihuan2##Coal gangue is the largest amount of industrial solid waste in China. It caused serious damage to the ecological environment and waste resources. Therefore, it is of great significance to realize the resource utilization of coal gangue, protecting the environment and realizing the sustainable development of society. This paper …
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##tihuan2##DOI: 10.1016/J.PROEPS.2009.09.100 Corpus ID: 128975447; Study on the reaction degree of calcined coal gangue powder in blended cement by selective solution method @article{Shuangxi2009StudyOT, title={Study on the reaction degree of calcined coal gangue powder in blended cement by selective solution method}, author={Zhou Shuang …
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##tihuan2##PDF | China's total coal production in 2021 exceeded 4.13 billion tons, 52% of the world's total. Coal gangue, a solid waste of coal mining accounts for... | Find, read and cite all the ...
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##tihuan2##To analyze the pollution characteristics of heavy metals in the soil of farmland surrounding the gangue heap of a coal mine in Chongqing, the Nemerow, Muller, and Hakanson indices were used. Meanwhile, to investigate the health risks of heavy metals in soil, a health risk assessment model was employed using Monte Carlo simulation. The …
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##tihuan2##Overall, to enhance the soil water storage capacity in mining areas, the results suggest that coal gangue mulching with a thickness of 8–16 cm and particle size …
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##tihuan2##Coal-, coal gangue- and biomass-fired power plant, were chosen to survey the source profile and emission factor of VOCs. • B/T ratios (0.8–2.6) during thermal power generation could be consider as the characteristics of coal and biomass burning.
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##tihuan2##Coal mining wastes are associated with serious environmental problems; they have potential as building materials, including alkali-activated cement. In this study, the effect of different coal mining wastes on the mechanical properties and microstructural development of alkali-activated materials (AAMs) was evaluated through XRD, SEM and …
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##tihuan2##Top coal caving is a process for the rational extraction of large amounts of coal resources. However, this process readily causes release of excessive amounts of gangue during the coal release process. The conventional technique, which involves visual inspection, is not only labor-intensive but also can introduce inaccuracies. Coal and …
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##tihuan2##across the coal mining district and finally flow into the Lugou River at a confluence in the Jiaole Village. The coal mining activity in Jiaole experienced approxi-mately 40 years and closed in the early 2000s. The coal gangue covers a total area of 1.5 km2 (1.5 km length, 0.5– 1.5 km width). The dominant ore mineral of Jiaole is anthra-
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##tihuan2##DOI: 10.1016/j.pnsc.2024.02.012 Corpus ID: 268401715; Environmental hazards and comprehensive utilization of solid waste coal gangue @article{Zheng2024EnvironmentalHA, title={Environmental hazards and comprehensive utilization of solid waste coal gangue}, author={Qinwen Zheng and Yi Zhou and Xin Liu …
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##tihuan2##Using coal gangue as a fertilizer has been proven helpful in potentially reducing its environmental impact and improving its value. In this study, the formation mechanism …
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##tihuan2##Coal gangue, produced during coal mining and processing [1, 2], is one of the most extensively produced solid wastes in China [1, 3], accounting for approximately 10%‒20% of raw coal production [].The accumulation of coal gangue causes serious environmental, social, and economic problems in the coal mining area [].Heavy metals …
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##tihuan2##During coal mining activities, a lot of coal gangue is produced, which usually contains high mercury (Hg) concentrations as well as the acid mine drainage (AMD) generator of pyrite. In the present study, the total mercury (THg) and methylmercury (MeHg) in gangue, water, sediment, paddy soil, and rice samples, collected from abandoned …
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##tihuan2##Bin Dong. Sewage sludge can be utilized as an alternative raw material for manufacturing sintering brick to achieve energy recovery and resources recycle, which, thus, may have …
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##tihuan2##Appl. Sci. 2022, 12, 12060 3 of 18 ble is limited [41]. More than 35% of coal gangue still exists in the form of waste heaps [42]. Given the huge annual production of coal gangue in China, the ...
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##tihuan2##DOI: 10.1016/j.jhazmat.2023.132707 Corpus ID: 263725567; Understanding the release, migration, and risk of heavy metals in coal gangue: An approach by combining experimental and computational investigations.
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##tihuan2##In order to effectively control high temperatures inside coal gangue hills, gravity heat pipes with specific spacings are vertically installed in coal gangue hills. Heat extracted from these heat pipes can be utilized for power generation through energy conversion. In this study, an equivalent model of gravity heat pipes in coal gangue hills …
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##tihuan2##clean coal product with a yield of 25% and an ash content of 13.96%. It is worth noting that the above re-separation processes of coal flotationtailing all include a grinding stage. The carbon component in the coal flotationtailings is closely connected with the gangue and needs to be ground to achieve further dissociation. Kaolinite (Al 2 O 3 ...
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##tihuan2##Although the calcination-based activation of coal gangue is important for its valorization in the form of cementitious materials, the related works mainly focus on high-quality coal gangue, neglecting its low-quality counterpart. To bridge this gap, we herein conducted the pilot-scale suspension calcination of low-quality coal gangue; explored …
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##tihuan2##Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage. Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process. Coal gangue, a residue produced during the …
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##tihuan2##Influence of different sources of coal gangue used as aluminosilicate powder on the mechanical properties and microstructure of alkali-activated cement September 2019 Materiales de Construcción ...
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