Utilization of incineration fly ash from biomass power plants for zeolite synthesis from coal fly ash by microwave hydrothermal treatment

Tomonori Fukasawa, Akira Horigome, Achmad Dwitama Karisma, Norio Maeda, An Ni Huang, Kunihiro Fukui*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)

Abstract

Potassium-type zeolite (K-zeolite) was synthesized from coal fly ash and woody biomass incineration ash by microwave hydrothermal treatment. The woody biomass incineration ash was discharged from a biomass power plant, and extracted solutions of the material had a pH range of 11.5–13.0 and a high potassium concentration; therefore, it could be employed to replace the KOH solution that is typically used in the synthesis of K-zeolites. Consequently, we successfully synthesized a K-zeolite containing phillipsite phases from coal fly ash using extracted solutions obtained from biomass incineration fly ash. The ammonium adsorption capacity of the K-zeolite synthesized by microwave hydrothermal treatment was comparable to that of K-zeolite synthesized by oil-bath hydrothermal treatment (external heating). We also confirmed that the microwave heating method could shorten the K-zeolite synthesis time compared to that required when using oil-bath heating.

Original languageEnglish
Pages (from-to)450-456
Number of pages7
JournalAdvanced Powder Technology
Volume29
Issue number3
DOIs
Publication statusPublished - Mar 2018
Externally publishedYes

Keywords

  • Biomass incineration ash
  • Microwave hydrothermal treatment
  • Zeolite

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