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Recycling of plastic waste: screening for brominated flame retardants (BFRs)
Technical University of Denmark, Denmark.ORCID iD: 0000-0002-0643-9984
Technical University of Denmark, Denmark. (Research Group for Analytical Food Chemistry)ORCID iD: 0000-0002-5264-1577
Technical University of Denmark, Denmark.ORCID iD: 0000-0002-5472-8553
Technical University of Denmark, Denmark.ORCID iD: 0000-0002-2853-1001
2017 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 69, no November, p. 101-109Article in journal (Refereed) Published
Abstract [en]

Flame retardants are chemicals vital for reducing risks of fire and preventing human casualties and property losses. Due to the abundance, low cost and high performance of bromine, brominated flame retardants (BFRs) have had a significant share of the market for years. Physical stability on the other hand, has resulted in dispersion and accumulation of selected BFRs in the environment and receiving biota. A wide range of plastic products may contain BFRs. This affects the quality of waste plastics as secondary resource: material recycling may potentially reintroduce the BFRs into new plastic product cycles and lead to increased exposure levels, e.g. through use of plastic packaging materials. To provide quantitative and qualitative data on presence of BFRs in plastics, we analysed bromophenols (tetrabromobisphenol A (TBBPA), dibromophenols (2,4- and 2,6-DBP) and 2,4,6-tribromophenol (2,4,6-TBP)), hexabromocyclododecane stereoisomers (α-, β-, and γ-HBCD), as well as selected polybrominated diphenyl ethers (PBDEs) in samples of household waste plastics, virgin and recycled plastics. A considerable number of samples contained BFRs, with highest concentrations associated with acrylonitrile butadiene styrene (ABS, up to 26,000,000 ng TBBPA/g) and polystyrene (PS, up to 330,000 ng ∑HBCD/g). Abundancy in low concentrations of some BFRs in plastic samples suggested either unintended addition in plastic products or degradation of higher molecular weight BFRs. The presence of currently restricted flame retardants (PBDEs and HBCD) identified in the plastic samples illustrates that circular material flows may be contaminated for extended periods. The screening clearly showed a need for improved documentation and monitoring of the presence of BFRs in plastic waste routed to recycling.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 69, no November, p. 101-109
National Category
Organic Chemistry Environmental Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-75136DOI: 10.1016/j.wasman.2017.08.038OAI: oai:DiVA.org:lnu-75136DiVA, id: diva2:1214203
Available from: 2018-06-06 Created: 2018-06-06 Last updated: 2018-06-07Bibliographically approved

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Eriksson, Eva

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Pivnenko, KostyantynGranby, KitEriksson, EvaAstrup, Thomas Fruergaard
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