coal ash Articles

  • Competing Coal Ash Proposals

    On May 4, 2010, the U.S. Environmental Protection Agency (EPA) issued its long-awaited proposal to manage coal ash – the byproduct of burning coal to generate power. The agency proposed two quite different approaches for regulating coal ash, somewhat to the consternation of critics, who had hoped for more stringent ...


    By Acta Group

  • Legal lookout: competing coal ash proposals

    Depending upon comments the EPA gathers, industry may have to or not have to close out their coal ash containment ponds within five years. On May 4, 2010, EPA issued its long-awaited proposal to manage coal ash – the byproduct of burning coal to generate power. The agency proposed two quite different approaches for regulating coal ash, somewhat to the consternation of critics, who had hoped ...


    By Bergeson & Campbell, P.C.

  • Low-permeability liner solution for coal-ash by-products

    PROJECT: TVA Kingston Gypsum Pond Expansion LOCATION: Harriman, Tennessee PRODUCTS: BENTOMAT® 600CL BENTOMAT® CL EASY ROLLER™ Deployment System BACKGROUND: As part of its emissions control at the Kingston Fossil Plant, flue gas desulfurization is performed, which creates as a by-product a synthetic ...


    By CETCO

  • Legal lookout: EPA responds to coal ash release

    Once again, it took a major catastrophe to wake up industry and regulators to a problem that should have been addressed long ago. Dec. 22, 2008, was a nightmare for federal and state regulators, electrical utilities, and most particularly the residents of Kingston, Tenn. On this day, approximately 5.4 million cubic yards (or 1.1 billion gallons) of coal ash from the Tennessee Valley Authority ...


    By Bergeson & Campbell, P.C.

  • Photosynthetic pigment concentrations, gas exchange and vegetative growth for selected monocots and dicots treated with two contrasting coal fly ashes

    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 ...

  • EPA targets electric utilities - the agency steps up efforts to manage coal ash damage

    Approximately 5.4 million cubic yards, or 1.1 billion gallons, of coal ash from the Tennessee Valley Authority (TVA) plant near Knoxville, Tenn., in December 2008 flooded some 300 acres of land, damaging property, polluting waterways, and killing fish. TVA will likely spend more than $500 million and perhaps as much as $1 billion dollars on the cleanup, says the U.S. Environmental Protection ...


    By Bergeson & Campbell, P.C.

  • 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, ...


    By Inderscience Publishers

  • Experience on coal reburn in a utility boiler

    Reburning is an in-furnace combustion modification technology for the reduction of NOx. By staging the introduction of the fuel, an environment is created where NOx generated by the combustion of the main fuel supply is subsequently consumed by the hydrocarbon radicals arising from the reburn fuel under reducing conditions. ENEL has retrofitted unit No. 4 of Vado ...


    By Inderscience Publishers

  • Cleaning of Dukki (Baluchistan) coal by oil agglomeration process

    Cleaning of coal fines by oil agglomeration is an efficient technique by which an appreciable recovery of combustible matter and significant reduction in ash forming minerals are possible. In this study, oil agglomeration process has been employed to clean indigenous coal under the influence of parameters such as oil type, particle size and the pH value of aqueous medium. As agglomerant, castor ...


    By Inderscience Publishers

  • A new way to measure emissions from China’s Coal-Fired Power Plants

    To prevent the most severe impacts of climate change, it is essential to limit fossil fuel use—particularly coal use in power production. The share of coal in global energy consumption is increasing, with ...

  • Danfoss VLT® 8000 improves reliability at power station

    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 ...

  • Case study - Fort Mandan visitor services center

    The North Dakota Lewis & Clark Bicentennial Foundation has created a unique facility for one of the most vital sites on the Lewis & Clark Trail. The new visitor services center at Fort Mandan stands as a showcase for coal combustion products, while at the same time educating visitors about the journey of Lewis & Clark in North Dakota. Three major parts of the North Dakota: economy, ...


    By Headwaters, Inc.

  • Increasing the use of recovered mineral components in cement or concrete

    Section 6017(a) of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users, P.L. 109-59, Aug. 10, 2005 (SAFETEA-LU), directs the U.S. Environmental Protection Agency (EPA or the Agency) to, “…conduct a study to determine the extent to which procurement requirements, when fully implemented…may realize energy savings and environmental benefits attainable with ...

  • E.ON Benelux power station Maasvlakte, Rotterdam - Case Study

    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 ...

  • 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 ...


    By InduMar Products, Inc.

  • ZG chain grate biomass fired boiler in Pakistan

    The new chain grate boiler system with chain grate stocker permits a wide range of biomass fuels including Bagasse, crop stalk, mustard stalk, cotton stalk, rice husk, coffee grounds, de-oiled bran , wood waste , Coconut shell ,roasted chaff, lignite, paper sludge, coal,corn cob, spent grain with high ash contents to be combusted in an efficient manner with the added advantage of automatic ...


  • 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 ...


    By InduMar Products, Inc.

  • Biomass Pellet Fuel and Its Advantages

    With the continuous deterioration of the people's living environment, global warming topic has become a concern of people from all walks of people. It has been very important to the development of new energy. At present, our main fuel is oil and coal, these are non-renewable materials, and you'll never have again when we use them up. Therefore, many countries are in the research of new energy, ...


    By Allance Pellet Machinery

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