Sökning: "fly-ash"

Visar resultat 1 - 5 av 64 avhandlingar innehållade ordet fly-ash.

  1. 1. Waste incineration residues Persistent organic pollutants in flue gas and fly ash from waste incineration

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Eva Weidemann; Umeå universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; MSW; PCDD; PCDF; PCN; PCB; POP; formation; degradation; case study; flue gas sampling thermal treatment; fly ash; surface characterization;

    Sammanfattning : Modern societies produce large quantities of municipal solid waste (MSW), which is commonly disposed of by incineration. This has several advantages: it reduces the waste’s volume and sterilizes it while also enabling energy recovery. LÄS MER

  2. 2. The relationship between fly ash chemistry and the thermal formation of polychlorinated pollutants during waste incineration

    Detta är en avhandling från Umeå : Umeå universitet

    Författare :Duong Ngoc Chau Phan; Umeå universitet.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Incinerations; dioxins; PCDD Fs; PCBs; PCNs; flue gas; fly ash; sampling; particle characterization; XPS; XRD; SEM EDX; formation; chlorination; PCA; OPLS; OPLS-DA;

    Sammanfattning : The thermal formation of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), biphenyls (PCBs), and naphthalenes (PCNs) is a major problem in waste incineration. Ideally, rather than relying on air cleaning systems and treatment techniques, their formation should be minimized or, if possible eliminated. LÄS MER

  3. 3. Binding of moisture in fly ash blended Portland cement paste and mortar : Impact of replacement level and curing temperature

    Detta är en avhandling från Lund University

    Författare :Oskar Linderoth; Lund University.; Lunds universitet.; [2018-05-30]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cement; Mortar; Water vapor sorption; Supplementary cementitious materials; Fly ash; Hydration; Thermogravimetric analysis; X-ray diffraction; Rietveld analysis;

    Sammanfattning : .... LÄS MER

  4. 4. Leaching, filtration and displacement washing in a treatment process for MSW combustion fly ash - laboratory scale and plant studies

    Detta är en avhandling från Lund University

    Författare :Magda Wilewska-Bien; [2004]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; washing; filtration; MSW; cyclone ash; : leaching; fly ash; MSWI ash;

    Sammanfattning : Municipal Solid Waste combustion, as one of the waste management tools, starts to play an important role nowadays in heat and energy generation. However, MSW combustion leads to generation of other wastes - combustion residues, including ashes, which require a proper management. LÄS MER

  5. 5. Co-disposal of waste rock and lignite fly ash to mitigate the environmental impact of coal mining

    Detta är en avhandling från Luleå : Luleå University of Technology

    Författare :Asif Qureshi; Luleå tekniska universitet.; [2016]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Acid mine drainage AMD ; coal mine waste rocks; coal fly ash; co-disposal; mixing blending; dry-cover; prevention neutralisation; Tillämpad geokemi; Applied Geochemistry;

    Sammanfattning : Waste rocks (WRs) from coal mining and fly ash (FA) from coal combustion were studied to determine the potential of the WRs to generate AMD, FAs to neutralise it and estimate their impacts on environment. The ultimate goal was to develop a methodology based on co-disposal to mitigate the environmental problems associated to both wastes. LÄS MER