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 (0.4–1 mm) of directly recoverable glass (17%w/w); a coarse fraction (>1 mm) requiring further thermal treatment in order to separate EVA-glued layers in glass fragments; a fine fraction (<0.4 mm) 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: <0.08 mm (3%w/w) and 0.08–0.4 mm (22%w/w). Chemical characterization showed that 0.08–0.4 mm fractions mainly contained Fe, Al and Zn, while precious and dangerous metals (Ag, Ti, Te, Cu and Cd) are mainly present in fractions <0.08 mm. Acid leaching of 0.08–0.4 mm 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%.
| Original language | English |
|---|---|
| Pages (from-to) | 422-431 |
| Number of pages | 10 |
| Journal | Waste Management |
| Volume | 59 |
| DOIs | |
| Publication status | Published - 2017 Jan 1 |
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Keywords
- Chemical treatment
- Glass recovery
- Photovoltaic panels
- Physical treatment
- Recycling
ASJC Scopus subject areas
- Waste Management and Disposal
Cite this
Physical and chemical treatment of end of life panels : An integrated automatic approach viable for different photovoltaic technologies. / Pagnanelli, Francesca; Moscardini, Emanuela; Granata, Giuseppe; Abo Atia, Thomas; Altimari, Pietro; Havlik, Tomas; Toro, Luigi.
In: Waste Management, Vol. 59, 01.01.2017, p. 422-431.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Physical and chemical treatment of end of life panels
T2 - An integrated automatic approach viable for different photovoltaic technologies
AU - Pagnanelli, Francesca
AU - Moscardini, Emanuela
AU - Granata, Giuseppe
AU - Abo Atia, Thomas
AU - Altimari, Pietro
AU - Havlik, Tomas
AU - Toro, Luigi
PY - 2017/1/1
Y1 - 2017/1/1
N2 - 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 (0.4–1 mm) of directly recoverable glass (17%w/w); a coarse fraction (>1 mm) requiring further thermal treatment in order to separate EVA-glued layers in glass fragments; a fine fraction (<0.4 mm) 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: <0.08 mm (3%w/w) and 0.08–0.4 mm (22%w/w). Chemical characterization showed that 0.08–0.4 mm fractions mainly contained Fe, Al and Zn, while precious and dangerous metals (Ag, Ti, Te, Cu and Cd) are mainly present in fractions <0.08 mm. Acid leaching of 0.08–0.4 mm 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%.
AB - 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 (0.4–1 mm) of directly recoverable glass (17%w/w); a coarse fraction (>1 mm) requiring further thermal treatment in order to separate EVA-glued layers in glass fragments; a fine fraction (<0.4 mm) 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: <0.08 mm (3%w/w) and 0.08–0.4 mm (22%w/w). Chemical characterization showed that 0.08–0.4 mm fractions mainly contained Fe, Al and Zn, while precious and dangerous metals (Ag, Ti, Te, Cu and Cd) are mainly present in fractions <0.08 mm. Acid leaching of 0.08–0.4 mm 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%.
KW - Chemical treatment
KW - Glass recovery
KW - Photovoltaic panels
KW - Physical treatment
KW - Recycling
UR - http://www.scopus.com/inward/record.url?scp=85006314523&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85006314523&partnerID=8YFLogxK
U2 - 10.1016/j.wasman.2016.11.011
DO - 10.1016/j.wasman.2016.11.011
M3 - Article
C2 - 27843026
AN - SCOPUS:85006314523
VL - 59
SP - 422
EP - 431
JO - Waste Management
JF - Waste Management
SN - 0956-053X
ER -