Conversion of waste incineration fly ash into zeolite A and zeolite P by hydrothermal treatment

Chikashi Tamura, Motohide Matsuda, Michihiro Miyake

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Zeolities A and P were successfully prepared by hydrothermal treatments at 60-120°C in the presence of NaOH solutions from waste incineration fly ash as a starting materials, pretreated with acid in addition to water washing and heating. The pretreatment was an important process to reproducibly convert fly ash into zeolites A and P. The relations between product fiels of zeolites A and P and hydrothermal conditions were examined. Consequently, zeolites A and P were successfully synthesized by treatments with 1.0-2.0 M NaOH solutions at 60°C for 20-48 h and with 0.5-2.0 M solutions at 80-100°C for 20-48 h, as major products, respectively. The treatment led the generation of sodalite with increasing NaOH concentration. The hydrothermal products exhibited removal characteristics for NH 4 + ions, and their uptake amounts were found to depend on zeolites A and P yields.

Original languageEnglish
Pages (from-to)205-209
Number of pages5
JournalNippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
Volume114
Issue number1326
Publication statusPublished - Feb 2006

Fingerprint

Coal Ash
Zeolites
incinerators
fly ash
Waste incineration
Fly ash
zeolites
products
sodalite
washing
Washing
pretreatment
Ions
Heating
acids
heating
Acids
Water
water
ions

Keywords

  • Hydrothermal synthesis
  • Incineration fly ash
  • Removal characteristics
  • Resource recovery
  • Sodalite
  • Zeolite A
  • Zeolite P

ASJC Scopus subject areas

  • Ceramics and Composites

Cite this

Conversion of waste incineration fly ash into zeolite A and zeolite P by hydrothermal treatment. / Tamura, Chikashi; Matsuda, Motohide; Miyake, Michihiro.

In: Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan, Vol. 114, No. 1326, 02.2006, p. 205-209.

Research output: Contribution to journalArticle

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