coal fly ash Articles
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Utilisation of pulverised coal fly-ash as filler and rice straw as fibrous raw material for manufacturing of special grade paper
This innovative research study is based on utilisation of two solid waste materials, pulverised coal fly-ash and rice straw for manufacturing of laminate base paper. Fly-ash can prove to be a very good filler for laminate grade coloured base papers and other specialty papers where very high opacity is sought but whiteness is not important. The paper samples with 22% filler have opacity of 99.6% ...
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Catalytic wet peroxide oxidation of azo dye (Acid Orange 7) using NaY zeolite from coal fly ash
This work concerns the synthesis of NaY zeolite derived from low–cost materials like fly ash (FA) for degradation of Acid Orange 7 (AO7) by catalytic wet peroxide oxidation. Synthesised NaY zeolite is characterised using XRD, SEM/EDAX and FTIR. The results indicate that synthesised NaY zeolite is a promising catalyst for dye removal. The effects of various operating parameters like temperature, ...
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Variation in riparian consumer diet composition and differential bioaccumulation by prey influence the risk of exposure to elements from a recently remediated fly ash spill
Emerging aquatic insects play a key role in transporting aquatic nutrients and contaminants to riparian consumers. However, little is known about how within and between year variation in the diet or patterns of element bioaccumulation in emerging insect taxa may influence the risk of exposure to wildlife. During two breeding seasons, we examined the composition of the diet of tree swallows ...
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Effects of Coal Fly Ash on Tree Swallow Reproduction in Watts Bar Reservoir, Tennessee
Coal‐fly ash was released in unprecedented amounts (4.1x106 m3) into the Emory River from the Tennessee Valley Authority Kingston Fossil Plant on Watts Bar Reservoir in Tennessee. Tree swallows were exposed to ash‐related constituents at the ash release via their diet of emergent aquatic insects, whose larval forms can accumulate constituents from submerged river sediments. Reproduction of ...
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Combined load and leachant pH effects on contaminant release from fly ash
Several studies have been performed recently on the suitability of particulate waste materials as substitute aggregate in load bearing and geoenvironmental structures. To investigate the long-term performance and durability of these recycled materials, the coupled effects of the interacting fluid chemistry and applied load are herein analysed experimentally. The leachability of heavy metals ...
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Transportation and market feasibility analysis for innovative coal combustion by-products: WoodBrik in Greenbrier County, West Virginia
This paper outlines a transportation and market feasibility study performed in support of Western Greenbrier Co-Generation, LLC's participation in the first Department of Energy Clean Coal Initiative. Western Greenbrier Co-Generation, LLC is a unique company formed by three local city councils to support the development of clean coal technologies in Greenbrier County, West Virginia. The study ...
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Cenospheres - Case Study
The problem: A cenosphere is a lightweight, inert, hollow sphere made largely of silica and alumina and filled with air or inert gas, typically produced as a byproduct of coal combustion at thermal power plants. On average 0.5% of the fly ash generated in a coal fired power station boiler are Cenospheres. When fly ash is wet discharged in to ash ponds/lagoons cenospheres float on the water ...
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STOP IT Power Generation - Case Study
Lead Repair in Massachusetts: A major utility in Massachusetts uses STOP IT® to repair cracks on lead covered cables which leak oil. Cable diameters range in size from 1' to 4' and carry electricity @ 5, 13.8 and 25 KVA. Two to three rolls of STOP IT® are used on each application. Quote: 'Very good product. Sets up well, smooths out perfect, sealed crack good.' Hats Off in Florida: ...
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Review of coal as a promising source of lithium
Coals are a major source of pollution in certain parts of the world due to mining, coal combustion, and disposal of fly ash. The recovery of valuable rare metals from coals or coal–processing byproducts is a promising way to utilise these traditional resources economically, efficiently and in an environmentally friendly way. Lithium, a highly interesting metal, has been found dispersed and even ...
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STOP IT Power Generation - Case Study
Lead Repair in Massachusetts: A major utility in Massachusetts uses STOP IT® to repair cracks on lead covered cables which leak oil. Cable diameters range in size from 1' to 4' and carry electricity @ 5, 13.8 and 25 KVA. Two to three rolls of STOP IT® are used on each application. Quote: 'Very good product. Sets up well, smooths out perfect, sealed crack good.' Hats Off in Florida: ...
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Utilization of fly ash in construction industries for environment management
Abstract Fly ash is naturally cementations coal combustion by-product. A fine glass powder recovered from the gases of burning coal during the production of electricity is fly ash. The combustion of powdered coal in thermal power plants produces fly ash. Disposal of high amount of fly ash from thermal power plants absorb huge amount of water, energy and land area by ash ponds. Generation of ...
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Fly Ash & the Lightweight Aggregate Market
In 2015, the global fly ash market was estimated to be valued at 40 billion USD. A recent industry analysis by Research Nester anticipates the market will reach an estimated 70 billion USD by the end of 2023 – a 7.1% CAGR owing to increasing urbanization and a boost in construction projects. Along with bottom ash (BA) and flue gas desulfurization gypsum (FGD gypsum, or synthetic gypsum), ...
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A Pilot Study of Mercury Liberation and Capture from Coal-Fired Power Plant Fly Ash
The coal-fired electric utility generation industry has been identified as the largest anthropogenic source of mercury (Hg) emissions in the United States. One of the promising techniques for Hg removal from flue gas is activated carbon injection (ACI). The aim of this project was to liberate Hg bound to fly ash and activated carbon after ACI and provide high-quality coal combustion ...
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