Study for recycling of ceria-based glass polishing powder II-recovery of hydroxysodalite from the alkali waste solution containing SiO2 and Al2O3

Kazuhiro Kato; Toshiaki Yoshioka; Akitsugu Okuwaki

doi:10.1021/ie000319s

Study for recycling of ceria-based glass polishing powder II-recovery of hydroxysodalite from the alkali waste solution containing SiO₂ and Al₂O₃

Kazuhiro Kato, Toshiaki Yoshioka, Akitsugu Okuwaki

ENV - Frontier Science for Advanced Environment

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

The recovery of SiO₂ and Al₂O₃ from the alkali waste solution of the glass polishing powder-recycling process was investigated. The effects of seed crystal, stirring speed, and temperature were also studied. Hydroxysodalite was obtained from the waste solution by heating to 80-100 °C. Addition of seed crystal shortened the reaction time and made easy the recovery of hydroxysodalite. The hydroxysodalite deposition process was rate-determined by the chemical reaction step, and increased temperature was also effective in shortening a reaction time.

Original language	English
Pages (from-to)	4148-4151
Number of pages	4
Journal	Industrial and Engineering Chemistry Research
Volume	39
Issue number	11
DOIs	https://doi.org/10.1021/ie000319s
Publication status	Published - 2000

ASJC Scopus subject areas

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

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10.1021/ie000319s

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AU - Okuwaki, Akitsugu

PY - 2000

Y1 - 2000

N2 - The recovery of SiO2 and Al2O3 from the alkali waste solution of the glass polishing powder-recycling process was investigated. The effects of seed crystal, stirring speed, and temperature were also studied. Hydroxysodalite was obtained from the waste solution by heating to 80-100 °C. Addition of seed crystal shortened the reaction time and made easy the recovery of hydroxysodalite. The hydroxysodalite deposition process was rate-determined by the chemical reaction step, and increased temperature was also effective in shortening a reaction time.

AB - The recovery of SiO2 and Al2O3 from the alkali waste solution of the glass polishing powder-recycling process was investigated. The effects of seed crystal, stirring speed, and temperature were also studied. Hydroxysodalite was obtained from the waste solution by heating to 80-100 °C. Addition of seed crystal shortened the reaction time and made easy the recovery of hydroxysodalite. The hydroxysodalite deposition process was rate-determined by the chemical reaction step, and increased temperature was also effective in shortening a reaction time.

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Study for recycling of ceria-based glass polishing powder II-recovery of hydroxysodalite from the alkali waste solution containing SiO₂ and Al₂O₃

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