Study for recycling of ceria-based glass polishing powder

Kazuhiro Kato, Toshiaki Yoshioka, Akitsugu Okuwaki

Research output: Contribution to journalArticlepeer-review

38 Citations (Scopus)


The recycling of ceria-based glass polishing powder by alkali treatment was investigated. Major impurities in the waste, a SiO2 component from fine glass powder and an Al2O3 component from coagulating agents, could be removed easily at 50-60°C in a 4 mol kg-1 NaOH solution within 1 h. These impurities react with NaOH to precipitate as zeolite at higher temperature. Thus, it is expected that a recycling process which can regenerate polishing powder and convert SiO2 and Al2O3 components into zeolite can be designed.

Original languageEnglish
Pages (from-to)943-947
Number of pages5
JournalIndustrial and Engineering Chemistry Research
Issue number4
Publication statusPublished - 2000 Jan 1
Externally publishedYes

ASJC Scopus subject areas

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


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