CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

An analysis of the composition and metal contamination of plastics from waste electrical and electronic equipment (WEEE)

Erik Stenvall (Institutionen för material- och tillverkningsteknik, Polymera material och kompositer) ; Sandra Tostar (Institutionen för kemi- och bioteknik, Industriell materialåtervinning) ; Antal Boldizar (Institutionen för material- och tillverkningsteknik, Polymera material och kompositer) ; Mark Foreman (Institutionen för kemi- och bioteknik, Kärnkemi) ; Kenneth Möller
Waste Management (0956-053X). Vol. 33 (2013), 4, p. 915-922.
[Artikel, refereegranskad vetenskaplig]

The compositions of three WEEE plastic batches of different origin were investigated using infrared spectroscopy, and the metal content was determined with inductively coupled plasma. The composition analysis of the plastics was based mainly on 14 samples collected from a real waste stream, and showed that the major constituents were high impact polystyrene (42 wt%), acrylonitrile–butadiene–styrene copolymer (38 wt%) and polypropylene (10 wt%). Their respective standard deviations were 21.4%, 16.5% and 60.7%, indicating a considerable variation even within a single batch. The level of metal particle contamination was found to be low in all samples, whereas wood contamination and rubber contamination were found to be about 1 wt% each in most samples. In the metal content analysis, iron was detected at levels up to 700 ppm in the recyclable waste plastics fraction, which is of concern due to its potential to catalyse redox reactions during melt processing and thus accelerate the degradation of plastics during recycling. Toxic metals were found only at very low concentrations, with the exception of lead and cadmium which could be detected at 200 ppm and 70 ppm levels, respectively, but these values are below the current threshold limits of 1000 ppm and 100 ppm set by the Restriction of Hazardous Substances directive.

Nyckelord: WEEE; Plastics; Composition

Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2013-04-04. Senast ändrad 2015-07-28.
CPL Pubid: 175344


Läs direkt!

Länk till annan sajt (kan kräva inloggning)

Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Polymera material och kompositer (2005-2017)
Institutionen för kemi- och bioteknik, Industriell materialåtervinning (2007-2014)
Institutionen för kemi- och bioteknik, Kärnkemi (2005-2014)


Textil-, gummi- och polymermaterial

Chalmers infrastruktur

Relaterade publikationer

Denna publikation ingår i:

Functional Properties and Morphology of Recycled Post-consumer WEEE Thermoplastic Blends

Mechanical and thermal properties of recycled WEEE plastic blends