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Related Experiment Videos

Real-time-monitored decrease of trichlorophenol as a dioxin surrogate in flue gas using iron oxide catalyst.

Masuyoshi Yamada1, Izumi Waki, Minoru Sakairi

  • 1Hitachi, Ltd, Central Research Laboratory, 1-280, Higashi-Koigakubo, Kokubunji, Tokyo 185-8601, Japan. myamada@crl.hitachi.co.jp

Chemosphere
|December 9, 2003
PubMed
Summary

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Real-time monitoring of trichlorophenol emissions using APCI/ITMS effectively controlled iron oxide catalyst injection in incinerators. This method shows potential for economical, continuous suppression of dioxins and furans.

Area of Science:

  • Environmental Chemistry
  • Analytical Chemistry
  • Chemical Engineering

Background:

  • Municipal solid waste incineration can release harmful pollutants, including trichlorophenol and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/PCDFs).
  • Effective control strategies are needed to minimize these emissions during incineration.
  • Real-time monitoring offers a promising approach for dynamic process control.

Purpose of the Study:

  • To investigate the real-time monitoring of trichlorophenol (TCP) emissions during municipal solid waste incineration.
  • To evaluate the efficacy of an iron oxide oxidation catalyst in reducing TCP emissions.
  • To assess the potential of TCP as a surrogate for real-time control of PCDD/PCDF suppression.

Main Methods:

  • Direct sampling atmospheric pressure chemical ionization/ion trap mass spectrometry (APCI/ITMS) was employed for real-time emission monitoring.

Related Experiment Videos

  • An iron oxide-based oxidation catalyst was injected into the incinerator.
  • Emissions of trichlorophenol, carbon monoxide (CO), and polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDDs/PCDFs) were analyzed.

    • Main Results:

    • Iron oxide catalyst injection exponentially reduced trichlorophenol emissions.
    • No correlation was observed between CO emissions and catalyst injection rate.
    • Real-time TCP monitoring indicated potential for controlling PCDD/PCDF suppression catalyst injection.

    Conclusions:

    • Real-time monitoring of trichlorophenol is a viable method for controlling iron oxide catalyst injection in incinerators.
    • This approach offers a continuous and economical way to manage PCDD/PCDF suppression.
    • The study highlights the potential for optimizing incineration processes to reduce harmful emissions.