Organic solvent selection for delamination of end-of-life silicon photovoltaic modules based on recyclability
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Kuupäev
2024
Kättesaadav alates
Autorid
Trivedi, H.K.
Meshram, A.
Gupta, R.
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Estonian University of Life Sciences
Abstrakt
Photovoltaic modules (PVMs) are already accepted as renewable energy sources to fulfill future energy demand. E-waste from end-of-life (EoL) PVMs will pose significant challenges for both the recovery of valuable materials and the environmental hazards in the near future. Delamination of photovoltaic modules for recycling typically involves separating the solar cell from various layers of PVM that are; glass, encapsulant ethylene-vinyl acetate, and backsheet. The solar cell is encapsulated by ethylene-vinyl acetate (EVA) layers; the photovoltaic module can be delaminated by a swelling encapsulant layer using organic solvents. The recyclability of organic solvents is investigated in this work, with an emphasis on possible contamination by encapsulated EVA during EoL PVM delamination. To investigate the interactions of encapsulant EVA with solvents, it was extracted from EoL PVMs. This work investigates contamination of organic solvents in the temperature range of 25–55 °C and suggests solvent recyclability for reuse and waste reduction. Organic solvents Fourier transform infrared (FTIR) spectra after a 24-hour encapsulant EVA interaction were compared to study organic solvent contamination. This study focused on two different types of solvents: aromatic hydrocarbons (like xylene) and chlorinated hydrocarbons (like CH2Cl2). Xylene demonstrated resistance to EVA contamination, making it a preferred organic solvent for recycling EoL PVMs.
Kirjeldus
Received: January 31st, 2024 ; Accepted: May 24th, 2024 ; Published: August 5th, 2024 ; Correspondence: Harishis@iitk.ac.in
Märksõnad
ethylene-vinyl acetate (EVA), e-waste, organic solvent, photovoltaic modules, recycling, solar cell, articles