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Also, fly ash utilization should be monitored for radon gas inhalation, particularly in building and construction practices, and potassium, thorium, and radium for soil and crop contamination. Another environmental concern is the pollution of gases such as COX, NOx, SOx, and particulate matter during coal combustion.
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The quality of Indian coal is lo w and contains. ash ranging from 35 to 50% (Khadse et al., 2007). It also shows high mineral contains high moisture, low sulphur, and low calorific values ranging ...
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fly ash with Ca content <10% is called low calcium fly ash; fly ash with Ca content at 10–20% is intermediate calcium fly ash; and that with Ca content >20% is called high calcium fly ash [7]. Fly ash includes strong cementitious ash (15 min internal condensation), intermediate cementitious ash (60 min internal condensation), and
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Either fresh or carbonated fly ashes added trace elements such as B, Fe, Mn, Zn, Cu, Cd, Mo, Cr, Pb and Ni into the soil which significantly enhanced the plant growth and yield compared to fly ash ...
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Maharashtra's fly ash utilisation policy. The state of Maharashtra has implemented a comprehensive fly ash utilization policy, which mandates the use of fly ash in construction activities within a 300-kilometer radius of coal power plants. Originally, fly ash could only be used within a 100-kilometer radius of the power plant that …
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generated fly ash requires large areas for disposal as well as remains a source of environmental pollution ... 667.43 million tonne Coal/Lignite and fly ash utilization is around 168.40 million ...
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Fly ash contains heavy metals and some radioactive elements; therefore, utilizing it can lead to severe health and environmental consequences if not adequately managed.
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Since coal residues contain potentially hazardous substances, improper handling and disposal could cause undesirable environmental effects. This report intends to summarize impacts of land-oriented …
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The fly ash dumps not only creates air, water, and soil pollution but also poses noxious impact on human health by introducing toxins in food chain through …
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The results confirm the possibility of fly ash resource utilization for synergetic pollution and carbon reduction and demonstrate the synergetic emission reduction potential of the solid waste resource utilization supply chain.
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In India, fly-ash utilization has increased from 3% in the 1990s [5] to 38% in 2005 [3]. ... It disturbs the ecology through soil, air and water pollution. (4) Long inhalation of fly-ash causes various serious diseases like …
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Table 5 Effects of vermicomposted fly ash on the rate of seed germination, number of flowers, fruits per pot, weight of fruits, yield of fruits per plant and percent increase of yield over control ...
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The fly ash produced by thermal power plants can cause pollution in air, surface water and ground water. It is the significant contributor to total pollutants such as PM, NOx and SOx and it widely known that the residue generated at the thermal power stations create major environmental hazards. ... Utilization of fly ash is not only …
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Considering biomass as an energy source generates fewer air pollutants than conventional fossil fuels and also decreases the waste (footprint) discarded to the landfills [44].Biomass is converted into energy typically by direct combustion and this technology is still used for producing energy globally on a large scale [45].Biomass can be utilized in …
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Fly ash is a prominent environmental by-product or residue that is produced during the combustion of coal for energy production in thermal power plant. The huge amount of fly ash generation is a ...
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The demand for obtaining clean water from untreated wastewater from the pollution of groundwater and industries, has increased due to the need for a sustainable society. ... (2009). "Potential fly-ash utilization in agriculture: a global review." 19(10): 1173-1186. Google Scholar. Batra et al., 2011. Batra, V. S., et al. (2011). "Value ...
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The scenario-based LCA results show that fly ash/bottom ash utilization can lower the SO2 load of untreated flue gas by 3.7–4.7% before an existing wet limestone …
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Environmental Science and Pollution Research - Fly ash is one of the largest types of industrial wastes produced during the combustion of coal for energy generation. ... (2010) A review on the utilization of fly ash. Prog Energy Combust Sci 36:327–363. CAS Google Scholar Ajmal Z, Usman M, Anastopoulos I, Qadeer A, Zhu R, …
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The fly ash generation during 2018-19 is 217.04 million tonnes due to combustion of. 667.43 million tonne Coal/Lignite and fly ash utiliz ation is around 168.40 million tonne which suggests. an ...
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2.5. Utilization of Fly Ash 19 2.5.1. Fly Ash in Portland cement Concrete 19 2.5.2. Fly Ash in Stabilized Base Course 20 2.5.3. Fly Ash in Flowable Fill 21 2.5.4. Fly Ash in Structural Fills/Embankments 22 2.5.5. Fly Ash in Soil Improvement 23 2.5.6. Use of fly ash for treatment of Acid Mine Drainage 24 2.5.7. Developments in Fly Ash ...
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Hon'ble NGT's Order. 6. Central Electricity Authority's 'Report on fly ash generation at coal / lignite based thermal power stations and its utilization in the country for the year 2021 - 22. 7. Authorization of auditors to undertake the compliance audit for ash disposal by the coal and lignite-based thermal power plants and the user ...
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The findings in Section 4.2 show that the regions with low fly-ash utilization rates and the economically developed regions with nearly fly-ash utilization rates suffer from the single use of fly ash and the low added value of resource utilization products. Fly ash is used for producing building materials, whereas its use for high-value ...
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FA dumps not only create air, water, and soil pollution but also pose a noxious impact on human health by introducing toxins in the food chain through biomagnification. A non-food vegetation cover can help to mitigate FA dump-related environmental health issues. However, alkaline pH, toxic metals, lack of soil microbes, …
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By-products (fly ash) obtained from the combustion process of boiler fuels (coal) is a valuable asset to the construction industry. In order to control the pollution, industries are adopting cofiring of coal with bio-fuels. These cofired ashes alter in physical and chemical properties with reference to (a by-product of burnt coal) fly ash.
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Class C fly ashes contain more calcium (as CaO) than Class F fly ashes, according to ASTM. Class C fly ash includes more than 15% CaO, and Class F fly ash contains less than 5% CaO. When anthracite or bituminous coal is burned, Class F fly ash is usually produced. This fly ash has pozzolanic properties.
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1. Introduction. Coal fly ash, a by-product of coal combustion in thermal power plants, is one of the most complex and abundant of anthropogenic materials. If not properly disposed of, it can cause water and soil pollution, disrupt ecological cycles and pose environmental hazards. More aggressive efforts have been undertaken recently to …
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The coal fly ash has a great impact on agriculture due to its efficacy in the modification of soil health and crop performance by altering soil properties like bulk density, soil texture, water ...
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Lo et al. developed sintered fly ash–based aggregates using high carbon fly ash powder (Loss on ignition ≈ 16.3%) and studied its effect on concrete's …
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Additional emphasis is given to the evaluation of plant adaptive response to pollution stress. ... been made to develop different recycling technologies addressing fly ash utilization. Thus, fly ash can be used ... The amelioration and revegetation of pulverized fuel ash," in Ecology and Reclamation of Devastated Land, eds R.J. Hutnik ...
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Fly ash has the potential to alter soil ecology, water and air causing serious pollution. Moreover, fly ash particles cause corrosion of surfaces and its inhalation causes respiratory problems in human beings. Further, Indian coal has 35–38% ash content which is significantly higher in comparison to the 10–15% ash content of imported coal ...
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FA dumps not only create air, water, and soil pollution but also pose a noxious impact on human health by introducing toxins in the food chain through …
DetailsThe type ofcoal, its ash content burners used and type of boilers altogether decides thephysico-chemical properties of fly ash. It is characterized with highconcentration of iron and aluminium oxides, toxic trace elements (Sb, As, Be,Cd, Pd, Hg, Se and V), macronutrients (P, K, Ca, Mg and S) and micronutrients(Fe, Mn, Zn, Cu, Co, B and Mo) …
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bKey Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology ... environmental hazards and realize high-value utilization of coal fly ash, it was characterized using the scanning electron microscopy, Brunauer–Emmet–Teller, and powder X-ray diffraction methods, ... (III) on fly ash could be due to the ...
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A utilization network optimization model toward sustainable municipal solid waste incineration fly-ash (IFA) management is first established with the integration …
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Highlights. •. Waste fly ash is converted into value-added materials via different methods. •. The utilization of fly ash-derived materials has been …
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Fly ash powder affects the environment, but it has a different direct impact on the human body. Figure 5 summarizes the effects of fly ash powder on the environment and the human body. The figure shows that due to rain in the landfill and ash ponds leads to the leaching of various toxic metals such as lead, cadmium, arsenic, mercury, etc., …
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2.0 Status of fly ash utilisation: Since 1999 when flyash utilisation was made mandatory, the utilization of fly ash has increased from 6.64 million-ton in 1996-97 to 147.7 million-ton in 2017-18. Fly ash generation and utilization in 2017-18 from 182 coal/lignite based TPPs of various power utilities in the country was 220.7
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The Utilization of fly ash has increased from 8% in 1997 to 70% in the year 2010. Apart from this 40% of the fly ash is still unused (Fig. 1) (Surabhi, 2017). ... (Delbergia sissoo) helped in restoring the ecology in a sustainable manner (Ram, 2009). As fly ash possesses many properties similar to gypsum and lime it can be utilized for sodic ...
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3. 4. Fly ash is a kind of solid waste produced after coal combustion. After a long period of accumulation, it takes up a lot of land resources and causes serious environmental pollution problems. The comprehensive utilization of fly ash resources is becoming more and more important. The paper introduces the physicochemical properties and ...
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