ash quality Articles

  • Influence of bed height on the quality of rice husk ash in a fluidised bed combustor

    The purpose of this study was to investigate the effect of bed height on the quality of rice husk ash in a 210–mm diameter pilot scale fluidised bed combustor. The degree of rice husk burning in the fluidised bed could be deduced from the temperature of the combustor and the particle size of the resulting ash. The turbulence in the bed would break down the char skeleton of the rice husk ...


    By Inderscience Publishers

  • How much of the fly ash dryer

    Fly how much of a dryer? Price ash dryer is based on the user's needs may be, there is no uniform price, because each user needs equipment and supporting systems are not the same, different materials need to be addressed, for the dryer needs are different manufacturing the selection also different, especially for large particle abrasion equipment big points, strong all choose the best materials, ...


    By IWA Publishing

  • 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 ...

  • 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.

  • 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

  • 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

  • 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

  • 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.

  • The Secret to Quality Food Products

    Quality is everything when it comes to food, and accurate moisture control is essential to quality. Decrease spoilage, wasted products and lost profits by making sure you’re accurately monitoring the moisture content of your food products. Join us July 17-19 in Chicago, IL at the International Food Technologists Annual Meeting & Expo ...


    By Arizona Instrument LLC

  • Urban Air Quality Management

    ' Poor air quality due to pollution is a serious environmental problem in most urban areas. The greatest burden of pollution is on human health. Urban air quality management requires an integrated approach that (i) identifies the most serious problems and measures that offer cost-effective and feasible solutions across a range of economic sectors and pollution sources including industries, ...


    By The World Bank

  • Application of Ecological Risk Assessment in Managing Residual Fly Ash in TVA's Watts Bar Reservoir, Tennessee

    The Tennessee Valley Authority conducted a Baseline Ecological Risk Assessment (BERA) for the Kingston Fossil Plant ash release site to evaluate potential effects of residual coal ash on biota in Watts Bar Reservoir, Tennessee. The BERA was in response to a release of 4.1 million m3 of coal ash on December 22, 2008. It used multiple lines of evidence to assess risks for 17 different ecological ...


    By John Wiley & Sons, Ltd.

  • 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 ...

  • Assessing Ecological Risks to the Fish Community from Residual Coal Fly Ash in Watts Bar Reservoir, Tennessee

    Extensive site‐specific biological and environmental data were collected to support an evaluation of risks to the fish community in Watts Bar Reservoir from residual ash from the December 2008 Tennessee Valley Authority (TVA) Kingston ash release. This paper describes the approach used and results of the risk assessment for the fish community, which consists of multiple measurement endpoints ...


    By John Wiley & Sons, Ltd.

  • Simultaneous immobilization of ammonium and phosphate from aqueous solution using zeolites synthesized from fly ashes

    Zeolites were synthesized from silica-rich (SF-Z) and calcium-rich (CF-Z) fly ashes, respectively, and their performance in immobilizing ammonium and phosphate was investigated through batch experiments. The cation exchange capacity and phosphate immobilization capacity of SF-Z were identified as 2.79 meq/g and 12.97 mg/g while those of CF-Z were 0.69 meq/g and 87.41 mg/g, respectively. The ...


    By IWA Publishing

  • Economic Analysis of Sequestering Carbon in Green Ash Forests in the Lower Mississippi River Valley

    Since the U.S. is the largest emitter of carbon dioxide (CO2), it has become crucial to develop options that are both cost effective and supportive of sustainable development to reduce atmospheric CO2. Electric utility companies have the options of reducing their use of fossil fuels, switching to alternative energy sources, increasing efficiency, or offsetting carbon emissions. This study ...


  • Development of Technology for Separation of Aluminium Oxide from Ash and Slag of Kuzbass Thermal Power Plants

    Abstract The paper presents a joint research made by the Siberian State Academy for Mining and Metallurgy and the Institute of Metallurgy and Concentration of the National Academy of Sciences, Kazakhstan, on separation of aluminum oxide from ash and slag of Kuzbass thermal power plants. This work is an integral part of 'The Development of a Technology for Deep Processing of Waste from Thermal ...


  • Fly Ash Concrete design for Chicago’s 100-Year road structure case study

    After years of heavy use, Wacker Drive, a major two-level viaduct in downtown Chicago, Illinois needed to be rebuilt. The Chicago Department of Transportation (CDOT) set ambitious goals for the $200 million concrete structure because of its central location and importance to downtown traffic flow. The end result is a more durable roadway with a service life of 75 to 100 years. Originally built ...


    By Headwaters, Inc.

  • Hurricane HR Cyclones to capture fine fly ash particulate enabling the use of wood waste fired thermal oil heater for Sonae Indústria - Case Study

    The company was forced to use a natural gas fired hot gas generator for drying fibre despite having the necessary amount of thermal energy available in the exhaust stream of a wood waste fired thermal oil heater. The problem of using the biomass thermal oil heater laid on the emission of fine burnt and unburnt particulate which were carried over with the dried fibre and finally deposited on the ...

  • Meeting regulations and improving quality case study

    A UK-based waste oil collector was using emulsifiers and heat to drop water out of waste lube oils and fuels. The processed oil with 0.5-1.0% water was being filtered in a centrifuge. The company installed Sequoia’s efficient water evaporation equipment which produces oil with less than 0.1% water. As a result, the centrifuge works more efficiently. Ultimately, the company makes a recycled ...


    By Sequoia Global, Inc.

  • A look at top-quality wood briquettes - Case Study

    The wood experts at Reuss are very happy with their RUF briquetting equipment Nowadays, wood briquettes are a popular source of fuel - but only as long as the quality is good. The people at Reuss are well aware of this fact from their long experience in the wood business, so their briquettes are made only from dry wood shavings using high-quality briquetting equipment from Ruf GmbH & ...

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