Characterisation and materials flow management for waste electrical and electronic equipment plastics from German dismantling centres

Abstract

Waste electrical and electronic equipment is a complex waste stream and treatment options that work for one waste category or product may not be appropriate for others. A comprehensive case study has been performed for plastic-rich fractions that are treated in German dismantling centres. Plastics from TVs, monitors and printers and small household appliances have been characterised extensively. Based on the characterisation results, state-of-the-art treatment technologies have been combined to design an optimised recycling and upgrade process for each input fraction. High-impact polystyrene from TV casings that complies with the European directive on the restriction of hazardous substances (RoHS) was produced by applying continuous density separation with yields of about 60%. Valuable acrylonitrile butadiene styrene/polycarbonate can be extracted from monitor and printer casings by near-infrared-based sorting. Polyolefins and/or a halogen-free fraction of mixed styrenics can be sorted out by density separation from monitors and printers and small household appliances. Emerging separation technologies are discussed to improve recycling results.

Keywords

Waste electrical and electronic equipment plastics dismantling characterisation recycling separation density near-infrared

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References

Al-Salem

Lettieri

Baeyens

(2009) Recycling and recovery routes of plastic solid waste (PSW): A review. Waste Management 29: 2625–2653.

Arends

Schlummer

Mäurer

(2012) Removal of inorganic colour pigments from acrylonitrile butadiene styrene by dissolution-based recycling. Journal of Material Cycles and Waste Management 14: 85–93.

Arends

(2014) Laser separation for the sortation of plastics from WEEE shredder light fractions. In: Sensor-based sorting 2014 : A joint Conference of RWTH Aachen, Department of Processing and Recycling and GDMB Gesellschaft der Metallurgen und Bergleute e.V., Aachen, Germany, 11–13 March.

Chancerel

Rotter

(2009) Recycling-oriented characterisation of small waste electrical and electronic equipment. Waste Management 29: 2336–2352.

Consultic (2014) Produktion, Verarbeitung und Verwertung von Kunststoffen in Deutschland 2013 – Kurzfassung (in German). Consultic Marketing & Industrieberatung GmbH, 12.

Delgado

Barrutabeña

Salas

(2007) Assessment of the environmental advantages and drawbacks of existing and emerging polymers recovery processes. Oliver Wolf: JRC Scientific and Technical Reports, 81.

Dimitrakakis

Janz

Bilitewski

. (2009) Determination of heavy metals and halogens in plastics from electric and electronic waste. Waste Management 29: 2700–2706.

DIN EN ISO 3167: 2014: Kunststoffe – Vielzweckprobekörper DIN EN ISO 179-1:2010: Plastics – Determination of Charpy impact properties.

Directive 2003/11/EC (2003) of the European Parliament and of the Council of 6 February 2003.

10.

Directive 2011/65/EU (2011) of the European Parliament and of the Council on the restriction of the use of certain hazardous substances in electrical and electronic equipment of 8 June 2011.

11.

Directive 2012/19/EU (2012) of the European Parliament and of the Council on waste electrical and electronic equipment (WEEE) of 4 July 2012, Annex III and Annex VII.

12.

Dodbiba

Sadaki

Okaya

. (2005) The use of air tabling and triboelectric separation for separating a mixture of three plastics. Minearals Engineering 18: 1350–1360.

13.

European Statistics. http://appsso.eurostat.ec.europa.eu/nui/submitViewTableAction.do (accessed 12 December 2014).

14.

Gent

Menendez

Toraño

. (2011) Optimisation of the recovery of plastics for recycling by density media separation cyclones. Resources, Conservation and Recycling 55: 472–482.

15.

Hopewell

Dvorak

Kosior

(2009) Plastics recycling: Challenges and opportunities. Philosophical Transactions of the Royal Society B 364: 2115–2126.

16.

Huth-Fehre

Feldhoff

Kantimm

. (1995) NIR—remote sensing and artificial neural networks for rapid identification of post-consumer plastics. Journal of Molecular Structure 348: 143–146.

17.

Krämer

Walther

Flamme

(2009) Waste electrical and electronic equipment. Are potentials for increasing the creation of value sufficiently used? Müll & Abfall 12: 623–627.

18.

Mark

(2006) The characteristics of plastics-rich waste streams from end-of-life electrical and electronic equipment. A technical report. Plastics Europe 5–15.

19.

Massen

(1998) Method and device for sorting materials. Patent US 5794788 A.

20.

Mäurer

Schlummer

(2006) Method for separating polymer components comprising different additives and use of said method. EP Patent no. EP1899129B1.

21.

Menad

Guignot

van Houwelingen

(2013) New characterisation method of electrical and electronic equipment wastes (WEEE). Waste Management 33: 706–713.

22.

Ramesh

Biswal

Mohanty

. (2014) Recycling of engineering plastics from waste electrical and electronic equipments: Influence of virgin polycarbonate and impact modifier on the final performance of blends. Waste Management & Research 32: 379–388.

23.

Santos

Nóbrega

Cadore

(2011) Determination of Cd, Cr, Hg and Pb in plastics from waste electrical and electronic equipment by inductively coupled plasma mass spectrometry with collision-reaction interface technology. Journal of Hazardous Materials 190:833–839.

24.

Schlummer

(2014) Recycling of postindustrial and postconsumer plastics containing flame retardants. Polymer Green Flame Retardants 869–889. Oxford; Boston: Newnes.

25.

Schlummer

Gruber

Mäurer

. (2007) Characterisation of polymer fractions from waste electrical and electronic equipment (WEEE) and implications for waste management. Chemosphere 67: 1866–1876.

26.

Schlummer

Mäurer

Arends

(2010) Recycling flammgeschützter Kunststoffe aus Elektronikaltgeräten mit dem CreaSolv®-Prozess (in German). In: Müllhandbuch 8400, Bd. 3.

27.

Sindiku

Babyemi

Osibanjo

. (2014) Polybrominated diphenyl ethers listed as Stockholm Convention POPs and other brominated flame retardants and heavy metals in e-waste plastic in Nigeria. Environmental Science and Pollution Research. Epub ahead of print 27 July 2014. doi: 10.1007/s11356-014-3266-0

28.

Thompson

Moore

vom Saal

. (2009a) Plastics, the environment and human health: Current consensus and future trends. Philosophical Transactions of the Royal Society B 364: 1973–1976.

29.

Thompson

Swan

Moore

. (2009b) Our plastic age. Philosophical Transactions of the Royal Society B 364: 1973–1976.

30.

Tomra. Tomra sorting equipment X-tract. https://www.tomra.com/en/solutions-and-products/sorting-solutions/recycling/recycling-technology/ (accessed 9 June 2015).

31.

van den Broek

Wienke

Melssen

. (1998) Plastic material identification with spectroscopic near infrared imaging and artificial neural networks. Analytica Chimica Acta 361: 161–176.

32.

Wäger

Schluep

Müller

. (2012) RoHS regulated substances in mixed plastics from waste electrical and electronic equipment. Environmental Science and Technology 46: 628–635.

33.

Wang

(2014) Recycling of non-metallic fractions from waste electrical and electronic equipment (WEEE): A review. Waste Management 34: 1455–1469.

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