Fly Ash Articles

  • Simultaneous removal of aqueous Zn2+, Cu2+, Cd2+, and Pb2+ by zeolites synthesized from low-calcium and high-calcium fly ash

    In this study, zeolites were synthesized from low-calcium (LCZ) and high-calcium (HCZ) fly ash, respectively. Subsequently, the zeolites were tested for their removal effectiveness for four aqueous cations, namely, Zn2+, Cu2+, Cd2+, and Pb2+, as a function of contact time, pH value, adsorbent dosage, and initial concentration of heavy metals. Both zeolites were ...


    By IWA Publishing

  • Fly Ash & the Lightweight Aggregate Market

    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 ...


    By FEECO International, Inc.

  • Laboratory investigation of hydraulic characteristics of fly ash as a fill material from the aspects of pollutant transport

    Depending on the usage of fly ash, it is necessary to determine its environmental parameters, such as the potential for pollutant transport/leaching after its built-in. This study presents a methodology for determination of transport parameters (filtration coefficient, effective porosity, longitudinal dispersivity, and the mean residence time) from experimental data collected from column ...


    By IWA Publishing

  • 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 ...

  • Cement mixes - case study

    For the manufacture of various cements including Portland cement Portland blast furnace cement Portland pozzolanic cement Portland fly ash cement Portland oil shale cement Portland limestone cement Portland fly ash cement with slag Slag cement from divers raw materials, various techniques are used from the field ...


    By AVA GmbH u. Co. KG

  • Biodegradability and methane production from secondary paper and pulp sludge: effect of fly ash and modeling

    The effect of fly ash on biodegradability and methane production from secondary paper and pulp sludge, including its modeling, was evaluated. Three tests with fly ash concentrations of 0, 10 and 20 mg/L were evaluated at 32 °C. Methane production was modeled using the modified Gompertz equation. The results show that the doses used produce a statistically significant increase of ...


    By IWA Publishing

  • Case study - Fly ash for stone matrix asphalt in Oregon

    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 Resources, Inc.

  • Case study - Fly ash for California’s Olivenhain dam

    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 Resources, Inc.

  • Case study - California sulfate damage awards

    The construction defect trial went against developer Brighton Homes, concrete subcontractor James Mock Inc, and concrete supplier Owl Rock Products, based on negligence to abide by the provisions of the Uniform Building Code (UBC). The significance of this verdict is that while sulfate attack of concrete from the surrounding soils has been widely known and researched in the United States, ...


    By Headwaters Resources, Inc.

  • Case study - Fly ash concrete design for Chicago’s 100-year road structure

    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 Resources, Inc.

  • Case study - High volume fly ash in the Madera project

    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 Resources, Inc.

  • Case study - 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 Resources, Inc.

  • Case study - Fly ash concrete modified strength projects

    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 Resources, Inc.

  • Case study - High volume fly ash for the 2 Folsom project

    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 Resources, Inc.

  • Case study - Point Mugu Naval Airstrip

    The runway is located at the Point Mugu Naval Air Station in Southern California. Economy, durability, low shrinkage and high strength were accomplished by reducing the amount of portland cement used in the concrete while utilizing large volumes of fly ash. In addition to field performance, this approach provided the added environmental goal of reducing the CO2 released into the air through ...


    By Headwaters Resources, Inc.

  • 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

  • Improved understanding of the pozzolanic behaviour of MSWI fly ash with Ca(OH)
    2
    solution

    The study aims at investigating pozzolanic behaviour of MSWI fly ash in a saturated Ca(OH)2 solution at various times. The raw and water–washed fly ashes were selected for the pozzolanic solidification experiment to which mass ratios of the solution to ash (ml/g) were adjusted to be 3 and 10, whereas the solidification times were set from 7 to 28 days and from one to three ...


    By Inderscience Publishers

  • 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

  • Effects of Coal Fly Ash on Tree Swallow Reproduction in Watts Bar Reservoir, Tennessee

    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 ...


    By John Wiley & Sons, Ltd.

  • 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

  • Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you