engleski

Catode ray tube recycling

The amount of Waste Electrical and Electronic Equipment (WEEE) has grown considerably in the last years due to the advancement of technology and shorter life cycle of electric and electronic equipment (EEE). Old CRT (Cathode Ray Tube) monitors are replaced with LCD (Liquid Cristal Display) and plasma monitors. Due to toxic materials such as lead, cadmium, barium, and fluorescent powders that CRT monitors contain they are classified as hazardous waste. In nowadays, there are two possible approaches to the management of waste CRTs, landfilling and recycling. Landfilling is the least waste management option for waste CRTs since they must be disposed on hazardous waste landfill. In accordance with circular economy, recycling is more favourable option but is limited because of high lead concentrations. For purpose of research presented in this paper, front and rear CRT glasses were obtained from treatment facility during 2013, 2014 and 2015. Samples were separately crushed and sieved. Experimental monitoring was carried out in mentioned period in order to determine possible leaching of lead from different fraction sizes of front and rear CRT glasses. Research has shown that lead is leached in higher concentrations from smaller fractions of rear CRT glasses, while lead was not leached from crushed front CRT glasses. Only two fractions of rear CRT glasses were classified as a hazardous waste.

Cathode ray tubes (CRTs), leaching test, lead, hazardous waste

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