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Sound management of brominated flame retarded (BFR) plastics from electronic wastes: State of the art and options in Nigeria

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  • Nnorom, Innocent Chidi
  • Osibanjo, Oladele

Abstract

Management of flame retarded plastics from waste electrical and electronic equipment (WEEE) has been posing a major challenge to waste management experts because of the potential environmental contamination issues especially the formation of polybrominated-dioxins and -furans (PBDD/F) during processing. In Nigeria, large quantities of electronic waste (e-waste) are currently being managed—a significant quantity of which is imported illegally as secondhand electronics. As much as 75% of these illegal imports are never reused but are rather discarded. These waste electronic devices are mostly older equipment that contains brominated flame retardants (BFRs) such as penta-brominated diphenyl ethers (PBDEs), and polybrominated biphenyls (PBBs) which are presently banned in Europe under the EU WEEE and RoHS Directives. Risk assessment studies found both to be persistent, bio-accumulative and toxic. The present management practices for waste plastics from WEEE in Nigeria, such as open burning and disposal at open dumps, creates potential for serious environmental pollution. This paper reviews the options in the environmentally sound management of waste plastics from electronic wastes. Options available include mechanical recycling, reprocessing into chemicals (chemical feedstock recycling) and energy recovery. The Creasolv® and Centrevap® processes, which are the outcome of the extensive research at achieving sound management of waste plastics from WEEE in Europe, are also reviewed. These are solvent-based methods of removing BFRs and they presently offer the best commercial and environmental option in the sound management of waste BFR-containing plastics. Because these developments have not been commercialized, WEEE and WEEE plastics are still being exported to developing countries. The industrial application of these processes and the development of eco-friendlier alternative flame retardants will help assure sound management of WEEE plastics.

Suggested Citation

  • Nnorom, Innocent Chidi & Osibanjo, Oladele, 2008. "Sound management of brominated flame retarded (BFR) plastics from electronic wastes: State of the art and options in Nigeria," Resources, Conservation & Recycling, Elsevier, vol. 52(12), pages 1362-1372.
    • Handle: RePEc:eee:recore:v:52:y:2008:i:12:p:1362-1372
    DOI: 10.1016/j.resconrec.2008.08.001
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    References listed on IDEAS

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    1. Lee, Jae-chun & Song, Hyo Teak & Yoo, Jae-Min, 2007. "Present status of the recycling of waste electrical and electronic equipment in Korea," Resources, Conservation & Recycling, Elsevier, vol. 50(4), pages 380-397.
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    1. Nnorom, I.C. & Osibanjo, O. & Ogwuegbu, M.O.C., 2011. "Global disposal strategies for waste cathode ray tubes," Resources, Conservation & Recycling, Elsevier, vol. 55(3), pages 275-290.
    2. Peeters, Jef R. & Vanegas, Paul & Tange, Lein & Van Houwelingen, Jan & Duflou, Joost R., 2014. "Closed loop recycling of plastics containing Flame Retardants," Resources, Conservation & Recycling, Elsevier, vol. 84(C), pages 35-43.

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