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Student Number 81326019
Author Chih-Ming Kao(ө)
Author's Email Address No Public.
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Department Graduate Institute of Environmental Engineering
Year 1993
Semester 2
Degree Master
Type of Document Master's Thesis
Language zh-TW.Big5 Chinese
Title The Research of Ferric-Complexed Cyanide treated by High Temperature Hydrolysis combined with Wet Air Oxidation Process.
Date of Defense
Page Count 122
Keyword
  • Combined Process Ferric-Complexed Cyanide
  • High Temperature Hydrolysis
  • Wet Air Oxidation
  • Abstract Ferric-Complexed Cyanide (FCC) which was resistant to
    destruction by conventional physichemical treatment
    technologies was found in various industrial wastes. The
    treatment feasibility study was conducted on FCC at high
    concentration by using different processes including High
    Temperature Hydrolysis (HTH), and Both processes. The
    experiments were operated under the following conditions: total
    reaction time 150 minutes, mixing rate 1300 rpm and excess air
    20%. The reaction temperatures (180J?240J) and hydrolysis
    time (0?150 min.) were selected as the  major factors in c
    COD, CN, and NH3 were analyzed to evaluate the treatment
    feasibility. The results indicated that HTH, WAO and the
    combined processes were found effective in the destruction of
    FCC at high concentrations. The total cyanide residues showed a
    sharp decrease in short time from the start of reaction in all
    treatments, and the HTH. In the decomposition of FCC, the HTH
    process produced ammonia and formic acid, while WAO yielded
    ammonia and carbonate. The results of T-test suggested that the
    possible main destruction mechanism of FCC was due to
    hydrolysis in the presence of water. Both HTH and WAO processes
    in the destruction of FCC appeared to be a first-order two
    steps reaction with respect to total cyanide. The activation
    energy analyzed by Arrhenius equation was found to be 47229J/
    mole for HTH and 54964 J/mole for WAO process in the first
    step reaction .
    Table of Content
    Reference
    Advisor
  • K. S. Wang.(˥)
  • Files No Any Full Text File.
    Date of Submission

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