Hydrothermal synthesis of a novel tobermorite-based porous material from municipal incineration bottom ash

Zhenzi Jing, Fangming Jin, Nakamichi Yamasaki, Emile Hideki Ishida

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

A novel tobermorite-based porous material has been synthesized from municipal incineration bottom ash (MIBA), using a hydrothermal processing method under saturated steam pressure (1.0 MPa) at 453 K for 12 h. Without additional vesicants, NaOH solution that is incorporated into the starting material acts as both a reaction solvent and a vesicant. As a reaction solvent, the NaOH solution first promoted tobermorite formation to form a huge number of small pores during hydrothermal processing; then, as a vesicant, it was released as vapor from the solidified specimens to form large pores after drying. The porous material possessed a pore diameter distribution of 0.01-10 μm, a BET specific surface area of 60 000 m2/kg, and a bulk density of 500-700 kg/m3. Moreover, the leaching tests showed that the concentration of heavy metals dissolved from the solidified specimen became very low after hydrothermal processing.

Original languageEnglish
Pages (from-to)2657-2660
Number of pages4
JournalIndustrial and Engineering Chemistry Research
Volume46
Issue number8
DOIs
Publication statusPublished - 2007 Apr 11

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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