Fly Ash Treatment Articles

  • 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

  • Lightweight concrete mix profitable using heavyweight batch mixer

    To increase production of concrete mixes containing coal fired power generation plant ash products, Charah Inc. opened a new manufacturing plant in Emporia, VA, which also serves as a warehouse and distribution center for other concrete industry products. Profit margins are slim in this high volume business, so management placed great emphasis on the capital and operational costs of the equipment ...

  • 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

  • Application of leachate pollution indices for assessment of leachate pollution potential of landfills (a case study of an unlined landfill with lime sludge and fly ash)

    Leachates from unlined landfills cause environmental degradation and health hazards due to resultant ground water pollution. Their pollution potential can be measured on a comparative scale using leachate pollution index (LPI). The selection of index involves 18 pollution parameters, their weightages and the sub–index values. The concentrations of pollutants are obtained from toxicity ...


    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

  • Characterisation of LD slag of Bokaro Steel Plant and its feasibility study of manufacturing commercial 'fly ash–LD slag' bricks

    The aim of this study is to couple several analytical techniques in order to carefully undertake physical, chemical and mineralogical characterisations of LD steel slag to determine its feasible utilisation in commercial brick manufacturing. The characterisation results of LD slag showed that the pH and electrical conductivity of the samples were very high indicating high percentage of lime ...


    By Inderscience Publishers

  • Cement - The one and only in Estonia

    Estonia is quite a small country and it also lacks good quality rock. However, in the northeast there are quality limestone deposits and also the only cement factory in the country. Today, Kunda Nordic Cement (KNC) follows proudly the tradition of cement production that started there in 1870. Now KNC belongs to the HeidelbergCement Group. Site, acquired recently by Kopar, has been a vital element ...


    By Kopar Oy

  • 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 Ltd

  • Permitting of Alternative Fuels and Raw Materials at Portland Cement Plants Post NSR Reform

    Introduction One of the ways that the portland cement industry is seeking eco-efficiency gains is in waste co-processing and energy/material recovery - using the waste and by-products of other industries as fuels and raw materials for cement manufacture.1 These wastes and by¬products of other industries, such as tires and plastics (fuels) or blast furnace slag and fly ...


    By Trinity Consultants

  • 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 ...

  • 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

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