fly ash recycling Articles

  • 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; ...


  • 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

  • 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

  • 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.

  • 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.

  • 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

  • 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 ...

  • Recycling Zinc From Municipal Solid Waste

    Results from experiments carried out in laboratory and on a 0.5 MW test facility are presented. It was shown that Zn can be substantially extracted from waste using different techniques. In the pilot experiments the Zn behavior was investigated with radioactive tracers. It was shown that by changing the operation conditions from combustion to gasification the amount of evaporated Zn can be ...

  • FAQ About Plasma Arc Gasfication Process from Plasma Waste Recycling, Inc (PWR)

    What is Municipal Solid Waste? Municipal solid waste (MSW)—more commonly known as trash or garbage—consists of everyday items such as product packaging, grass clippings, furniture, clothing, bottles, food scraps, newspapers, appliances, paint and batteries. It does not contain industrial, hazardous, or construction waste. Since 1980, the total annual volume of MSW generated in the U.S. has ...


  • Characterisation of Incinerator Residues for Their Possible Re-Use

    MSW incineration produces a high quantity of residues (slags, fly ashes, sludges). Recycling suitability of residues is therefore an important issue requiring as a first step their physical and chemical characterisation (mass, granulometry distribution, merceology) and determination of their hazardousness (i.e. pollutant contents of heavy metals and chlorinated organic compounds). ...


  • Fort Mandan Visitor Services Center case study

    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.

  • Transportation and market feasibility analysis for innovative coal combustion by-products: WoodBrik in Greenbrier County, West Virginia

    This paper outlines a transportation and market feasibility study performed in support of Western Greenbrier Co-Generation, LLC's participation in the first Department of Energy Clean Coal Initiative. Western Greenbrier Co-Generation, LLC is a unique company formed by three local city councils to support the development of clean coal technologies in Greenbrier County, West Virginia. The study ...


    By Inderscience Publishers

  • Cement Manufacturing Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Pulp and Paper Mills Industry - Pollution Prevention Guidelines

    Introduction Pollution Prevention Guidelines to provide technical advice and guidance to staff and consultants involved in pollution-related projects. The guidelines represent state-of-the-art thinking on how to reduce pollution emissions from the production process. In many cases, the guidelines provide numerical targets for reducing pollution, as well as maximum ...


    By The World Bank

  • Not in my back yard — international shipments of waste and the environment

    Waste without borders: Zhang Guofu, 35, makes EUR 700 a month, a huge wage in provincial China, sifting through waste that includes shopping bags from a British supermarket chain and English-language DVDs. The truth is that waste placed in a bin in London, can quite easily end up 5 000 miles away in a recycling factory in China's Pearl River delta. Waste of all descriptions is on the move. ...

  • Blending of would-be landfill turns out greener cement-based products

    The vision of a greener future for the construction industry motivates Andrew Dennis, an architect here who founded a company dedicated to producing environmentally friendly cement-based products. Instead of the heavy aggregates found in standard concrete, the materials made by GigaCrete Inc. include non silica based sands and byproducts of coal combustion, fly-ash and bottom-ash and recycled ...

  • Wisconsin-Based Utility Expands Green Energy Portfolio

    JUST as a wise investor maintains a diverse investment portfolio, a successful utility needs to make certain that it has a diverse portfolio of generation sources,” says Bill Johnson, manager of Agricultural Compliance for Alliant Energy, headquartered in Madison, Wisconsin. Alliant's generation portfolio includes 434 megawatts of renewable energy - enough to power over 110,000 homes. “With ...


    By BioCycle Magazine

  • Denmark’s Near-Zero-Waste Wonder

    Has this Danish community found the formula for environmentally friendly industry? When we look closely at systems in nature — coral reefs or rainforests, for instance — we see something we don’t often see in human systems: mutually beneficial relationships and energy flows among the various elements, such as air, water, rocks, soil, and plant and animal life. If we ...


    By Ensia

  • Study Charts a Future for Waste-Derived Fuels

    Pointers to possible future EU policy initiatives to give co-incineration facilities burning waste-derived fuels a strategic role in waste management have emerged in a study for the European Commission.1 The report suggests a policy focus on promoting source separation of municipal wastes, active discouragement of mass burn incinerators, and a levelling of the regulatory playing-field for ...

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