ash containment Articles

  • Management of sewage sludge and ash containing radioactive materials

    Approximately 50% of the seven to eight million metric tonnes of municipal sewage sludge produced annually in the US is reused. Beneficial uses of sewage sludge include agricultural land application, land reclamation, forestry, and various commercial applications. Excessive levels of contaminants, however, can limit the potential usefulness of land-applied sewage sludge. A recently completed ...


    By Inderscience Publishers

  • Like a phoenix from the ashes

    Thanks to growing environmental awareness, waste is increasingly being separated and recycled. However, residual waste always remains that can't easily be recycled. This ends up in waste incineration plants (referred to as KVAs in Swiss German) for disposal and reclaiming, such as the KVA Linthgebiet in Niederurnen in the Swiss canton of Glarus. Due to the strict environmental specifications ...


    By Metrohm AG

  • Dewatering of Boiler Ash - Case Study

    Ten Gate develops and produces materials that function to increase performance, reduce costs, and deliver measurable results by working with our customers to provide advanced solutions. THE PROJECT The Wheelabrator Technology Group provides design/build and operation of trash-to-energy facilities. The Wheelabrator facility located in Lisbon, CT utilizes a storage tank for ...

  • 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.

  • Retrievals of fine ash mass from MODIS data

    On May 2, 2008, the Chaitén Volcano in southern Chile erupted for the first time in ten thousand years. The plume that was sent into the atmosphere contained mostly fine ash which is dangerous for jet aircrafts. As the plume is transported by winds the ash can remain in the atmosphere for many hours. Even several hundred kilometres downstream from the volcano, the concentration of fine ash was ...

  • Fly Ash for California’s Olivenhain Dam case study

    The Olivenhain Dam will be the first roller compacted concrete (RCC) gravity dam in California and the tallest in North America. At 308 feet tall and 2,552 feet long, the dam used almost 1.5 million cubic yards of RCC and over 152,000 tons of fly ash. As the centerpiece of the San Diego County Water Authority (SDCWA) Emergency Storage Project, the dam is designed to survive a major earthquake and ...


    By Headwaters, Inc.

  • Hydraulic conductivity of compacted lateritic soil treated with bagasse ash

    Lateritic soil treated with up to 12% bagasse ash content was compacted using reduced Proctor, standard Proctor, West African Standard and modified Proctor energies at −2, 0, 2 and 4% of optimum moisture content. The effects of moulding water, water content relative to optimum, initial degree of saturation at compaction, void ratio, bagasse ash content and compactive efforts on hydraulic ...


    By Inderscience Publishers

  • The use of tetragnathid spiders as bioindicators of metal exposure at a coal ash spill site

    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 ...


    By John Wiley & Sons, Ltd.

  • Environment impact from ash disposal of the thermal power plant 'Kosova A'

    Mining activities impact on environment is as old as these activities themselves. It is estimated that thermal power plants in Kosova produce about 1.6 million tons of ash per year, and all ash produced is disposed as waste material. The main problems for environment pollution are the ash dumps containing more than 40 million tons of ash cover about 150 ha of land. The ash dumps sites of the ...


    By Inderscience Publishers

  • Impact of fly–ash–amended soil on growth and yield of crop plants

    Fly Ash (FA), a waste product of thermal power stations, has great potential for use in agriculture, because it contains almost all macro as well as micronutrients. In view of the potential disposal problem of FA, this investigation was carried out to search an economical and eco–friendly solution of its disposal by using it as nutrient source in agriculture for growth of crop plants. FA ...


    By Inderscience Publishers

  • Removal of arsenic from drinking water using modified fly-ash bed

    The removal of arsenic from drinking water by filtration through modified fly-ash bed is discussed. The preparation and characteristics of the bed material and the effects of different parameters like pH and the presence of other constituents are described. Various arsenic compounds in synthetic mixtures as well as drinking water samples containing arsenic have been investigated. The ...


    By Inderscience Publishers

  • Leaching of milled asphalt pavement amended with waste to energy ash

    The environmental suitability of using Waste-to-Energy (WTE) ash as a partial substitute for aggregate in hot-mix asphalt concrete was investigated using a series of leaching lysimeters. Eight samples of processed asphalt concrete manufactured with 25% by weight WTE ash as aggregate were leached using stainless steel lysimeters. A ninth lysimeter contained asphalt without WTE ash. Simulated ...


    By Inderscience Publishers

  • Evaluation of Metals, Metalloids, and Ash Mixture Toxicity Using Sediment Toxicity Testing

    In December 2008, a release of 4.1 million m3 of coal ash from the Tennessee Valley Authority Kingston Fossil plant occurred. Ash washed into the Emory River and migrated downstream into the Clinch and Tennessee Rivers. A Baseline Ecological Risk Assessment evaluated risks to ecological receptors from ash in the river system post‐dredging. This paper describes the approach used and results ...


    By John Wiley & Sons, Ltd.

  • High Volume Fly Ash for the 2 Folsom Project case study

    High Volume Fly Ash (HVFA) concrete was successfully used as the cornerstone of this project’s sustainability program. HVFA concrete was aggressively pursued because of its environmental benefits. When fly ash is used in place of cement, energy and landfill space is conserved and greenhouse gas emissions are reduced. During this HVFA project, roughly 2,800 tons of CO2 emissions were ...


    By Headwaters, Inc.

  • Fly Ash Concrete modified strength projects case study

    In order to remain current with sustainable concrete design and construction practices, it is becoming more important to enable ready mix producers to supply innovative performance mixes that contain optimum percentages of fly ash. These mixes can be used to meet sustainable development practices, durability and exposure requirements, associated life-cycle costs, LEED building credits, economic ...


    By Headwaters, Inc.

  • Low cost treatment of wastewater containing mercury salts

    Removal of mercury from wastewater is of considerable significance from an environmental point of view. Treatment of wastewater containing mercury salts has been carried out with the help of modified fly-ash bed. The preparation of the bed material has been described. The effects of different parameters such as pH, exchange capacity and the presence of other constituents have been studied. ...


    By Inderscience Publishers

  • Compatibility of compacted lateritic soil treated with bagasse ash and Municipal Solid Waste leachate

    Compatibility tests were carried out on lateritic soil treated with up to 12% bagasse ash compacted at about 2% wet of their respective optimum moistures using the standard Proctor energy. Samples were sequentially permeated with distilled water and municipal solid waste (MSW) leachate for 22 and 69 days, respectively, until steady flows were established. The final hydraulic conductivity values ...


    By Inderscience Publishers

  • Innovative fracture-resistant construction material from C&D waste aggregate, fly ash and recycled plastics

    A laboratory investigation was conducted to evaluate the fracture behaviour of an alternative pavement foundation material containing cement stabilised reclaimed crushed aggregate, Class C fly ash and waste-plastic strip (high density polyethylene or HDPE) reinforcement. The primary objective of using strip reinforcement was to improve the tensile strength, crack resistance and toughness ...


    By Inderscience Publishers

  • Adsorption of As, B, Cr, Mo and Se from coal fly ash leachate by Fe3+ modified bentonite clay

    Fly ash contains the potentially toxic elements As, B, Cr, Mo and Se which upon contact with water may be leached to contaminate surface and subsurface water bodies. This study aims to evaluate the adsorption of these elements from coal fly ash leachates on Fe3+-modified bentonite (Fe-Bent); such modification improved the physicochemical properties of bentonite clay. For optimization of ...


    By IWA Publishing

  • Testing Techniques for Evaluating the Shear Strength of Lime/Fly Ash Slurry Stabilized Soil

    Lime slurry pressure injections have been successfully used to stabilize and control swelling and expansive soils and low-strength clay soils to depths of up to 40 ft (12 m). When the activity of soils is somewhat lower, or when soils have large void ratios, lime/fly ash (L/FA) slurry mixtures have been injected to fill voids. It has been postulated that this action creates stronger seams, helps ...


    By ASTM International

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