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Related Experiment Videos

Desulfurization of coal.

R A Meyers, J W Hamersma, J S Land

    Science (New York, N.Y.)
    |September 29, 1972
    PubMed
    Summary
    This summary is machine-generated.

    Treating U.S. coals with ferric solution removes significant pyritic sulfur, a major source of sulfur oxide pollution. This process recovers elemental sulfur and iron sulfate, offering economic pollution abatement potential.

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    Area of Science:

    • Environmental Science
    • Chemical Engineering
    • Geochemistry

    Background:

    • Coal combustion is a primary contributor to sulfur oxide (SOx) pollution.
    • SOx emissions lead to environmental issues like acid rain and respiratory problems.

    Purpose of the Study:

    • To evaluate the effectiveness of aqueous ferric solution treatment for removing sulfur from U.S. coals.
    • To assess the potential for economic abatement of sulfur oxide pollution through this method.

    Main Methods:

    • Treatment of representative U.S. coal samples with an aqueous ferric solution.
    • Analysis of sulfur content reduction and identification of reaction products.

    Main Results:

    • The ferric solution treatment removed 40% to 75% of the total sulfur content.

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  • Near-quantitative oxidation of pyritic sulfur was observed.
  • Elemental sulfur and iron sulfate were recovered as reaction products.

    • Conclusions:

    • The described coal treatment method effectively removes pyritic sulfur.
    • This process shows high potential for the economic abatement of sulfur oxide pollution from coal combustion.