Development of a method for recycling of CRT funnel glass

Tung Chai Ling, Chi Sun Poon

Research output: Journal article publicationJournal articleAcademic researchpeer-review

40 Citations (Scopus)


Finding better solutions to manage and recycle cathode-ray tube (CRT) glass is crucial for reducing the environmental threats due to the disposal of the glass. In this paper, the results of a laboratory study on developing a method for removing lead from crushed funnel glass surface and re-utilizing the treated glass in cement mortar are presented. The results demonstrate that nitric acid at 3-5% concentration levels can be used to remove most of the lead from the crushed funnel glass surface and render it as non-hazardous waste based on toxicity characteristics leaching procedure (TCLP) testing. It is noted that the particle size of glass and number of treatment cycles are significant factors affecting lead extraction. The study further demonstrated that it is feasible to utilize up to 100% of treated funnel glass as a replacement for natural sand for producing cement mortar.
Original languageEnglish
Pages (from-to)2531-2537
Number of pages7
JournalEnvironmental Technology (United Kingdom)
Issue number22
Publication statusPublished - 1 Dec 2012


  • Cathode ray tubes
  • Cement mortar
  • Lead extraction
  • Nitric acid
  • Recycled funnel glass

ASJC Scopus subject areas

  • Environmental Chemistry
  • Waste Management and Disposal
  • Water Science and Technology


Dive into the research topics of 'Development of a method for recycling of CRT funnel glass'. Together they form a unique fingerprint.

Cite this