coal fly ash Articles

Using methods of the Mossbauer spectroscopy, scanning electron microscopy, and thermodynamic analysis of phase formation in silicate multi-component melts, the detailed study of composition, morphology, and properties of fly ash microspheres resulting from combustion of three coals (Irsha-Borodinskii, Kuznetskii and Ekibastuzskii) was carried out. About 60 microspherical products with an iron ...

Aug. 10, 2006

By Inderscience Publishers

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% ...

Dec. 1, 2013

By Inderscience Publishers

There is uncertainty as to the rates of coal fly ash needed for optimum physiological processes and growth. In the current study we tested the hypothesis that photosynthetic pigments concentrations and CO2 assimilation (A) are more sensitive than dry weights in plants grown on media amended with coal fly ash. We applied the Terrestrial Plant Growth Test (Guideline 208) protocols of the ...

Jun. 23, 2008

By Soil Science Society of America (SSSA)

On December 22, 2008 a dike containing coal fly ash from the Tennessee Valley Authority Kingston Fossil Plant failed and resulted in the largest coal ash spill in U.S. history. This study was designed to determine sediment metal concentrations at multiple site locations and to determine if site‐specific bioaccumulation of metals existed in tetragnathid spiders. Selenium and nickel were the ...

May 17, 2013

By John Wiley & Sons, Ltd.

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 ...

Aug. 11, 2014

By John Wiley & Sons, Ltd.

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, ...

Dec. 28, 2014

By Inderscience Publishers

Cockenzie, a 1200 MW coal-fired power station,  employs slurry pumps to convey the coal ash and fly ash. The hydraulic drive units and gearboxes  were a problem due to high maintenance cost. The easiest answer, frequency converter driven motor, directly coupled to the slurry pump. The system runs for up to 16 hours per day, also with a 38% reduction in energy ...

Oct. 3, 2007

By Danfoss Drives - Water & Wastewater

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 ...

Oct. 24, 2014

By John Wiley & Sons, Ltd.

Large‐scale releases of environmental contaminants from industrial facilities can cause considerable damage to surrounding ecosystems and require remediation. The expense and/or undesirable environmental side effects of physical removal may constrain remediation efforts. In 2008, approximately 4.1 million cubic meters of fly‐ash were released into the Emory River at a coal burning power plant ...

Jun. 12, 2016

By John Wiley & Sons, Ltd.

Encasement of utility cables and pipes in flowable fill monoliths formed in trenches requires the use of materials that satisfy both strength and contaminant leachability limits. Coal combustion ash is often readily available for use in flowable fill construction. The use of ash in desirably large quantities, calls for the determination and selection of the maximum ash mix fraction that meets ...

Oct. 17, 2006

By Inderscience Publishers

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 ...

May 9, 2007

By Inderscience Publishers

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 ...

Feb. 17, 2015

By Inderscience Publishers

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 ...

Apr. 8, 2007

By InduMar Products, Inc.

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 ...

Apr. 8, 2007

By InduMar Products, Inc.

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 ...

Feb. 28, 2005

By Air & Waste Management Association (A&WMA)

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 ...

Jun. 22, 2017

By FEECO International, Inc.

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 ...

May 15, 2017

By Dirk European Holdings LTD

Next Generation Power Production E.ON’s new Maasvlakte power station also known as MPP3 is built in the harbour of the Dutch metropolis Rotterdam. The modern supercritical hard coal fired unit with a capacity of 1100 MW is expected to have a thermal efficiency of more than 46 percent. The new plant built in the vicinity of the existing Maasvlakte station is designed as cogeneration ...

Oct. 10, 2016

By Promecon Process Measurement Control GmbH