US 12,465,964 B2
Method for recycling scrap glass from exhausted photovoltaic panels
Giovanni Modica, Syracuse (IT); and Piervittorio Luigi Trebucchi, Syracuse (IT)
Assigned to NUOVA RAECYCLE S.R.L., Syracuse (IT)
Appl. No. 18/578,961
Filed by NUOVA RAECYCLE S.R.L., Syracuse (IT)
PCT Filed Jul. 11, 2022, PCT No. PCT/IB2022/056379
§ 371(c)(1), (2) Date Jan. 12, 2024,
PCT Pub. No. WO2023/285941, PCT Pub. Date Jan. 19, 2023.
Claims priority of application No. 102021000018671 (IT), filed on Jul. 15, 2021.
Prior Publication US 2024/0326110 A1, Oct. 3, 2024
Int. Cl. B09B 3/35 (2022.01); B09B 3/21 (2022.01); B09B 3/27 (2022.01); B09B 3/29 (2022.01); B09B 3/40 (2022.01); B09B 3/70 (2022.01); B09B 101/15 (2022.01); B09B 101/50 (2022.01)
CPC B09B 3/35 (2022.01) [B09B 3/21 (2022.01); B09B 3/27 (2022.01); B09B 3/29 (2022.01); B09B 3/40 (2022.01); B09B 3/70 (2022.01); B09B 2101/15 (2022.01); B09B 2101/50 (2022.01)] 17 Claims
OG exemplary drawing
 
1. A method for recycling glass scrap from exhausted photovoltaic panels containing organic contaminants, the method comprising the steps of:
obtaining glass scrap from exhausted photovoltaic panels, wherein the amount of lead present in said glass scrap is less than 280 ppm;
grinding the glass scrap;
treating the ground scrap with an aqueous solution of sodium hydroxide (NaOH) at a predetermined temperature, pressure, and time, to obtain a solid fraction and a liquid fraction;
separating the solid fraction from the liquid fraction by filtration; and
adding to the liquid fraction organic or inorganic chelating agents.