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Resource Recovery of Waste Incineration Fly Ash: Synthesis of Zeolites A and P
Author(s) -
Miyake Michihiro,
Tamura Chikashi,
Matsuda Motohide
Publication year - 2002
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2002.tb00368.x
Subject(s) - sodalite , fly ash , incineration , chemistry , hydrothermal circulation , zeolite , ion exchange , waste management , incinerator bottom ash , nuclear chemistry , chemical engineering , ion , catalysis , organic chemistry , bottom ash , engineering
The conversion of waste incineration fly ash to zeolitic compounds by hydrothermal treatment in the presence of NaOH solution has been investigated. An acid pretreatment of fly ash in addition to water washing and heating at 800°C was found to be an important process to prepare reproducible zeolitic compounds. Treatment with a low‐concentration NaOH solution at 60°C and 100°–120°C successfully produced zeolites A and P, respectively, as major products. At increased concentrations of NaOH, sodalite was generated. The hydrothermal products showed uptake behavior for NH 4 + ions.