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Student Number 82326008
Author Shun-Rong Ku(Ua)
Author's Email Address No Public.
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Department Graduate Institute of Environmental Engineering
Year 1994
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title Partitioning of Heavy Metals in Municipal Solid Waste Incineration
Date of Defense
Page Count 127
Keyword
  • Municipal Solid Waste;Incineration;Heavy Metal;Fly Ash; Bottom Ash;Flue Gas;
  • Abstract This research investigates chemical, physical and structural
    properties of the ashes sampled from three MSWI. In addition
    to physicochemical properties such as specific surface area,
    particle size, morphology and elemental carbon content of the
    ashes particles, pH and chloride concentration of TCLP leachate
    can also affect the leaching behavior of heavy metals. Most
    trace metals would leach out more easily as TCLP leachate pH
    value decreases to acidic conditions except for Hg and As which
    tend to leach out in basic conditions. The resulting TCLP
    leachate pH after extraction seemed to have a greater effect on
    the metals contents than did pysicochemical factor in the
    various sized ash particles. Suspended particulate matter (SPM)
    and metal vapor were sampled from the stack of MSWI. The
    results of stack sampling show that metals with high vapor
    pressure, such as As and Hg, were mainly trapped on cooling
    system of sampler. Hg and As in gas phase were more than 80
    percent and dominated the partitioning of metal. The results
    indicate that metals with low boiling points tend to penetrate
    through APCD unless a particular control device is installed to
    collect them. As can be seen from the results of metals
    content in ashes and stack emission, the heavy metal contents
    were fairly high in all sampling,especially Cd, Pb and Zn. The
    high contents of Cd, Pb and Zn in ashes possibly come from
    plastic materials in contained in MSW. Furthermore,
    concentrations of the more enriched elements in fly ashes
    compared to normal soil result in enrichment factors (ENF). The
    order of ENF in fly ash were Cd>Pb>Zn>Hg>Cu and Cd was higher
    than others.
    Table of Content
    Reference
    Advisor
  • M.B. Chang(il)
  • Files No Any Full Text File.
    Date of Submission

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