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Physical and chemical treatment of end of life panels: An integrated automatic approach viable for different photovoltaic technologies

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2017 Italy Publisher:Elsevier BVJournal:Waste Management, volume 59, pages 422-431 (issn: 0956-053X,

Authors: PAGNANELLI, Francesca; MOSCARDINI, Emanuela; GRANATA, GIUSEPPE; ABO ATIA, THOMAS; ALTIMARI, PIETRO; Havlik, Tomas; TORO, Luigi;

doi: 10.1016/j.wasman.2016.11.011

pmid: 27843026

handle: 11573/928258

Physical and chemical treatment of end of life panels: An integrated automatic approach viable for different photovoltaic technologies

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Abstract

Different kinds of panels (Si-based panels and CdTe panels) were treated according to a common process route made up of two main steps: a physical treatment (triple crushing and thermal treatment) and a chemical treatment. After triple crushing three fractions were obtained: an intermediate fraction (0.4-1mm) of directly recoverable glass (17%w/w); a coarse fraction (>1mm) requiring further thermal treatment in order to separate EVA-glued layers in glass fragments; a fine fraction (<0.4mm) requiring chemical treatment to dissolve metals and obtain another recoverable glass fraction. Coarse fractions (62%w/w) were treated thermally giving another recoverable glass fraction (52%w/w). Fine fractions can be further sieved into two sub-fractions: <0.08mm (3%w/w) and 0.08-0.4mm (22%w/w). Chemical characterization showed that 0.08-0.4mm fractions mainly contained Fe, Al and Zn, while precious and dangerous metals (Ag, Ti, Te, Cu and Cd) are mainly present in fractions <0.08mm. Acid leaching of 0.08-0.4mm fractions allowed to obtain a third recoverable glass fraction (22%w/w). The process route allowed to treat by the same scheme of operation both Si based panels and Cd-Te panels with an overall recycling rate of 91%.

Country

Italy

Related Organizations

Keywords

Silicon, Silver, Iron, Chemical Fractionation, Zinc, Metals, Heavy, Cadmium Compounds, Recycling, Tellurium, photovoltaic panels; physical treatment; chemical treatment; glass recovery; recycling, Copper, Aluminum, Environmental Monitoring

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	130
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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%