fly ash Articles

  • 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

  • High volume Fly Ash for Texas parks building

    Before construction began on the new park headquarters building at Lake Somerville State Park, the Texas Parks & Wildlife Administration decided it had a great opportunity to get involved with sustainable building practices. Using High Volume Fly Ash (HVFA) in concrete structures at the site was one of the main sustainable building components used in the project. Although it was a relatively ...


    By Headwaters, Inc.

  • 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.

  • 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

  • An immobilisation mechanism for lead in fly ash subjected to mechanochemical treatment

    Mechanochemical (MC) processes immobilise heavy metals in fly ash, a desirable outcome because recycled fly ash is commonly used in the synthesis of inorganic materials. We investigate the extent of immobilisation and the mechanism of lead (Pb) leaching during MC treatment of fly ash, using lead oxide (PbO) and lead dichloride (PbCl2) as model compounds. MC treatment of the ...


    By Inderscience Publishers

  • 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 ...


    By Inderscience Publishers

  • Removal of carbamazepine from aqueous solution by adsorption on fly ash-amended soil

    Carbamazepine (CBZ), nonbiodegradable pharmaceutical residue, has become an emerging pollutant in several aquatic environments. The effectiveness of the mixture of soil and fly ash (FA) in adsorbing CBZ from aqueous solution has been studied as well as agitation time, FA content, initial CBZ concentration and desorption as a function of FA content. The adsorption kinetics fits a hyperbolic or ...


    By IWA Publishing

  • Particle size distribution and dissolution properties of metals in cyclone fly ash

    The particles in the examined cyclone fly ash were all smaller than 0.25 mm. in diameter, and particles smaller than 0.075 mm. in diameter accounted for 88.4 % of the ash weight. This result indicates that cyclone fly ash consists of particles with a small diameter. The metals in the cyclone fly ash were enriched in small ...

  • Technical Note: An effective thermal technology for the detoxification of MSW fly ash

    Increasing public concern regarding potential health problems due to improper waste disposal practices and the introduction of landfill taxes have induced the practice of incineration. Presently, all UK incinerators have to meet very strict emission levels. The municipal solid waste (MSW) fly ash generated has to be managed very carefully as it is enriched with toxic organic micro pollutants and ...


    By Inderscience Publishers

  • Fly Ash Treatment – Plasma Torches versus Graphite Electrodes

    Background Plasma generating devices have to be designed to tolerate incredibly harsh conditions during operation and in particular very high heat loads and temperatures around the arc. However, when used in the vitrification of highly chlorinated materials the challenge is even greater than in other applications. The combination of high ...

  • 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.

  • High volume Fly Ash in the Madera Project case study

    Located on a fully wooded 44-acre site in Gainesville, Florida, directly adjacent to the University of Florida campus, Madera consists of 80 lots being developed by Green Trust, LLC, and built by three builders. In the spring of 2002, selected builders were invited to participate in a presentation and meeting with the Florida Energy Extension Service (FEES) which spearheaded the project for the ...


    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.

  • Recycling of Fly Ash Produced in Combustion of Brown Coal with Increased Germanium Content

    A possibility of utilization of fly ash resulting from combustion of Czech brown coal with increased germanium content in a circulation fluidised bed combuster is examined in this study to recover germanium chloride. The laboratory measurement presented in this paper was focused on three aspects: obtaining raw germanium chloride by its direct distillation from the suspension of fly ash and HCl; ...


  • 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

  • Determination of Ammonium in Fly-Ash using the Distillation Unit KjelFlex K-360

    To reduce the emissions from ammonia to the environment the content of ammonium in fly-ash is determined. Depending on the ammonium content it is decided how to dispose the fly-ash or if it can be used as additive, e.g. in concrete. An easy and reliable method for the determination of ammonium in fly-ash is introduced in this article. The distillation and boric acid titration was performed with ...


    By BÜCHI Labortechnik AG

  • Lead sorption performance on active silica derived from fly ash

    The object of this study was to estimate the sorption property of active silica derived from fly ash after separation of silica and aluminum. The specific surface area of active silica enlarged to 115 m2/g was compared with the original fly ash (4 m2/g). Field emission scanning electron microscopy displayed the active silica, which looked like a honeycomb or curly layer with many ...


    By IWA Publishing

  • Fly Ash for Stone Matrix Asphalt in Oregon case study

    Stone Matrix Asphalt (SMA) is the latest low wear, long life asphalt pavement. It has a proven track record in Europe and is growing in popularity with State Department of Transportations across the country. Georgia alone placed over two million tons of SMA on its roads last year. The Oregon DOT is the latest to adopt SMA and is using it as a high durability asphalt wearing surface on 10 miles of ...


    By Headwaters, Inc.

  • Chemical sequential extraction of heavy metals and sulphur in bottom ash and in fly ash from a pulp and paper mill complex

    A five-stage sequential extraction procedure was used to determine the distribution of 11 metals (Cd, Cr, Cu, Mo, Pb, Zn, As, Co, V, Ni, Ba), and sulphur (S) in bottom ash and in fly ash from a fluidized bed co-combustion (i.e. wood and peat) boiler of Stora Enso Oyj Oulu Mill at Oulu, Northern Finland, into the following fractions: (1) water-soluble fraction (H2O); (2) exchangeable fraction ...


    By SAGE Publications

  • 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 ...

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