About Analysis method of silicon material for photovoltaic panels
Soltech suggested pyrolysis in a conveyor belt furnace and pyrolysis in a fluidised bed reactor as processes for recycling PV modules. The tests resulted in 80 % mechanical yield of the wafers. Almost 100 % was achieved for glass sheets. Silicon was recovered with a chemical etching method by using an acid solution.
Soltech suggested pyrolysis in a conveyor belt furnace and pyrolysis in a fluidised bed reactor as processes for recycling PV modules. The tests resulted in 80 % mechanical yield of the wafers. Almost 100 % was achieved for glass sheets. Silicon was recovered with a chemical etching method by using an acid solution.
Researchers have developed diverse physical, thermal, and chemical methods to recycle silicon-based PV panels, aiming to repurpose damaged panels and prioritize economic and environmental sustainability (Granata et al., 2022; Ravichandran and Ganesan, 2012).
PDF | On Mar 1, 2016, Cynthia E. L. Latunussa and others published Analysis of Material Recovery from Silicon Photovoltaic Panels | Find, read and cite all the research you need on ResearchGate.
Conventional recycling methods to separate pure silicon from photovoltaic cells rely on complete dissolution of metals like silver and aluminium and the recovery of insoluble silicon by employing multiple leaching reagents. A common approach that eschews hydrofluoric acid (HF) treatment is the double reagent approach which utilizes nitric acid .
The conditions of thermal and chemical treatment were optimized to separate metals and recover silicon from damaged PV panels. The thermal method was applied to remove EVA. The explored factors for this step were time interval and temperature that would ensure minimum energy expenditure and complete combustion of samples.
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6 FAQs about [Analysis method of silicon material for photovoltaic panels]
What is the recycling process for silicon-based PV panels?
In this review article, the complete recycling process is systematically summarized into two main sections: disassembly and delamination treatment for silicon-based PV panels, involving physical, thermal, and chemical treatment, and the retrieval of valuable metals (silicon, silver, copper, tin, etc.).
How are non-silicon PV panels treated?
The non-silicon PV panels are treated by on chemical process to separate the different PV module components and 95 % of materials were claimed to be able to be recovered for use in new materials (PV CYCLE, 2013).
What is crystalline silicon photovoltaics (c–Si PV)?
In this sense, crystalline silicon photovoltaics (C–Si PV) will become the dominant force for the disposal of photovoltaic waste components at the end of the operation period, and the prospects for the recycling market of the C–Si PV panels will be vast.
How to improve the sustainability of silicon PV panels?
Recommendations include the use of computer-based simulation models, enhanced lab-scale experiments, and industry-scale implementation to ensure the sustainable recycling of silicon PV panels. Sajan Preet: Writing – review & editing, Writing – original draft, Formal analysis, Data curation, Conceptualization.
What is the economic value of crystalline silicon PV panels?
The economic value of the valuable metals is $13.62/m 2, resulting in a profit of $1.19 per recycling of 1 m 2 of crystalline silicon PV panels. The breakdown of total revenue generated after selling the recovered valuable materials is as follows: 46% (aluminium), 25% (silver), 15% (glass), 11% (silicon), and 3% (copper).
Will silicon intensity decrease in c-Si solar PV panels?
The material intensity of silicon in c-Si PV shows a notable drop and a more detailed analysis estimates that the silicon intensity in solar PV panels will decrease from 1.1805 (kg/panel) to 1.0732 between 2020 and 2030.
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