Publisher DOI: 10.1016/j.jhazmat.2019.120874
Title: Classification of plastic waste originated from waste electric and electronic equipment based on the concentration of antimony
Language: English
Authors: Alassali, Ayah 
Abis, Marco 
Fiore, Silvia 
Kuchta, Kerstin 
Issue Date: 15-Dec-2019
Source: Journal of Hazardous Materials : 120874 (2019-12-15)
Journal or Series Name: Journal of hazardous materials 
Abstract (english): The aim of this research is a preliminary assessment of antimony concentration in plastic fractions deriving from different e-waste. We considered microwave ovens, desktop computers, laptops, mobile phones, a TV case, a PC monitor and LED lamps (63 items in total). The plastic fraction ranged from 8%-wt in computers and microwave ovens, up to 40%-wt in cell phones and 59%-wt in LED lamps. Specific polymers were identified through Near Infrared spectroscopy. The samples followed three parallel procedures: acid digestion with aqua regia; conversion into ashes at 600 °C then acid digestion with aqua regia; leaching according to UNI10802 reference procedure. Plastic components with significant amounts of antimony were the ones derived from desktop computers (25–1900 mg/kg) and from microwave ovens (830 mg/kg), yet their relative amount compared to the total weight of the item was limited. Items with larger plastic fractions showed lower concentrations of antimony (1–6 mg/kg in mobile phones cases and 160–640 mg/kg in plastic components of LED lamps). Leaching tests revealed that the analyzed plastic fractions could be mostly admitted in non-hazardous waste landfills. The analysis of ashed samples highlighted the need to further improve the acidic extraction procedure.
ISSN: 0304-3894
Institute: Umwelttechnik und Energiewirtschaft V-9 
Type: (wissenschaftlicher) Artikel
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