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Waste Manag. 2007;27(3):415-24. Epub 2006 Apr 19.

Characterization of shredded television scrap and implications for materials recovery.

Author information

  • 1Division of Mineral Processing, LuleĆ„ University of Technology, SE-971 87 LuleĆ„, Sweden. Jirang.Cui@ltu.se

Abstract

Characterization of TV scrap was carried out by using a variety of methods, such as chemical analysis, particle size and shape analysis, liberation degree analysis, thermogravimetric analysis, sink-float test, and IR spectrometry. A comparison of TV scrap, personal computer scrap, and printed circuit board scrap shows that the content of non-ferrous metals and precious metals in TV scrap is much lower than that in personal computer scrap or printed circuit board scrap. It is expected that recycling of TV scrap will not be cost-effective by utilizing conventional manual disassembly. The result of particle shape analysis indicates that the non-ferrous metal particles in TV scrap formed as a variety of shapes; it is much more heterogeneous than that of plastics and printed circuit boards. Furthermore, the separability of TV scrap using density-based techniques was evaluated by the sink-float test. The result demonstrates that a high recovery of copper could be obtained by using an effective gravity separation process. Identification of plastics shows that the major plastic in TV scrap is high impact polystyrene. Gravity separation of plastics may encounter some challenges in separation of plastics from TV scrap because of specific density variations.

PMID:
16624540
DOI:
10.1016/j.wasman.2006.02.003
[PubMed - indexed for MEDLINE]
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