Innovated application of mechanical activation to separate lead from scrap cathode ray tube funnel glass

Wenyi Yuan, Jinhui Li, Kibu Chiyo, Fumio Saito

Research output: Contribution to journalArticlepeer-review

88 Citations (Scopus)

Abstract

The disposal of scrap cathode ray tube (CRT) funnel glass has become a global environmental problem due to the rapid shrinkage of new CRT monitor demand, which greatly reduces the reuse for remanufacturing. To detoxificate CRT funnel glass by lead recovery with traditional metallurgical methods, mechanical activation by ball milling was introduced to pretreat the funnel glass. As a result, substantial physicochemical changes have been observed after mechanical activation including chemical breakage and defects formation in glass inner structure. These changes contribute to the easy dissolution of the activated sample in solution. High yield of 92.5% of lead from activated CRT funnel glass by diluted nitric acid leaching and successful formation of lead sulfide by sulfur sulfidization in water have also been achieved. All the results indicate that the application of mechanical activation on recovering lead from CRT funnel glass is efficient and promising, which is also probably appropriate to detoxificate any other kind of leaded glass.

Original languageEnglish
Pages (from-to)4109-4114
Number of pages6
JournalEnvironmental Science and Technology
Volume46
Issue number7
DOIs
Publication statusPublished - 2012 Apr 3

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry

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