Study on Asbestos Decompositon Involed in Slates at Room Temperature

DOI

Bibliographic Information

Other Title
  • スレート建材中のアスベストの常温分解法の研究

Abstract

Slates containing asbestos fibers were collected at the storage yard for the debris of big disaster by the earthquake and the tunami occurred at east-north part of Japan, March 11, 2011.  The asbestos fibers was decomposed to less than 0.1 % in content after mixing of the slates with calcium polysulfide solution in a rotating reaction vessel with ceramic balls for 20 hours at ambient temperature. The content of asbestos fibers was determined by a phase contrast microscope with diversion staining.  X-ray diffraction (XRD) indicated complete disappearance of specific main-peaks of asbestos fibers after the treatment and involvement of sulfur, calcium sulfite and calcium sulfate in the products.  The oxidation state of sulfur compounds was also confirmed by an X-ray absorption near edge structure (XANES) spectra.  The present method could decompose asbestos involved in slates as well as sprayed asbestos.

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Details 詳細情報について

  • CRID
    1390282680566437632
  • NII Article ID
    130005453452
  • DOI
    10.14912/jsmcwm.23.0_561
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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