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Synthesis of zeolite with reaction temperature and alkali concentrationfrom coal bottom ash

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2004, 14(5), pp.204-210
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : July 1, 2004
  • Accepted : September 8, 2004

So-Youn Jun 1 Ji-whan Ahn 1 Gi-Chun Han 1

1한국지질자원연구원

Accredited

ABSTRACT

Though the recycling rate of coal fly ash generated from domestic thermoelectric power plants is gradually increased, at present, the most amount of coal bottom ash is disposed by a landfill instead of recycling. Therefore, to reuse a coal bottom ash as high-value materials the synthesis of zeolite made from a coal bottom ash was investigated in this study. NaP1, hydroxy-sodalite and tobermorite were produced through the alkaline hydrothermal reaction of pulverized bottom ash at various temperatures; 80, 120, 150oC, and the concentration of NaOH at the range from 1 to 5 M. Especially, NaP1 with excellent cation exchange capability had a high crystallinity at 2 M NaOH and 120oC.

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