Effective utilization of coal fly ash containing unburned carbon

M. Miyake, V. Kumar Jha, Y. Kimura, M. Matsuda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We investigated the conversion process of coal fly ash with unburned carbon at greater than ca. 6 mass%, which has fallen behind in terms of resource recovery. As a result, composite materials consisting of zeolite A and/or zeolite X with good crystallinity and activated carbon were successfully prepared by NaOH fusion treatment at 750°C in N2 flow followed by hydrothermal treatment. The type of zeolite phase formed was dependent on the hydrothermal treatment conditions including NaOH concentration. The resulting composite materials exhibited removal characteristics for heavy metal ions such as Ni2+, Cd2+ and Pb2+. In this paper, we describe the conversion of the main SiO2-Al2O3 components and unburned carbon in coal fly ash into zeolite-activated carbon composite materials by a chemical process and the removal characteristics of the resulting materials.

Original languageEnglish
Title of host publicationWaste Management and the Environment IV
PublisherWITPress
Pages203-212
Number of pages10
Volume109
ISBN (Print)9781845641139
DOIs
Publication statusPublished - 2008
Event4th International Conference on Waste Management and the Environment, Waste Management 2008 - Granada, Spain
Duration: Jun 2 2008Jun 4 2008

Other

Other4th International Conference on Waste Management and the Environment, Waste Management 2008
CountrySpain
CityGranada
Period6/2/086/4/08

Keywords

  • Coal fly ash
  • Fusion treatment
  • Hydrothermal treatment
  • Removal characteristics
  • Zeolite

ASJC Scopus subject areas

  • Environmental Science(all)

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