Sunrise Energy Co., Ltd.
Sunrise Energy Co., Ltd.

Why Do We Recycle Solar Cells?

Ⅰ. Environmental benefits of handling and recycling solar cells


Recycling solar cells has many environmental benefits, the first being that it creates a useful and sustainable way to dispose of panels that have reached the end of their life, recycling solar cells also provides raw materials for reuse and reprocessing.


Ⅱ. Recycling solar cells to save costs


The cost of disposing of panels may increase for installers and engineers, and solar cells are considered specialized waste that needs to be disposed of in a specific way;


We can buy solar PV modules that we don't need, cutting costs along the way, which can ultimately lead to cheaper PV modules for consumers.


Ⅲ. Make the production of photovoltaic solar cells safer


Photovoltaic modules and modules often contain small amounts of metals and elements that are toxic to the environment (eg lead, selenium, cadmium) and can cause environmental hazards if not handled carefully.


Recycling used solar cells can extract up to 90% of the photovoltaic glass and up to 95% of the photovoltaic material needed for further production.


Ⅳ. Ensure the sustainability of solar cells


Another benefit of recycling solar cells is that it creates a more sustainable energy solution, and as solar cells become more commonplace, some photovoltaic materials are in danger of becoming less and less common.


Without recycling, we cannot sustain the production of solar cells on a large scale, which will increase the cost of solar cells and then affect their market.


Ⅴ. How to recycle scrap photovoltaic solar cells?


First strip off the aluminum frame of the solar panel, remove the cable connectors, and the shredder shreds the solar panel into pieces between 6mm and 10mm.


The semiconducting film is removed in a slowly rotating leaching drum, which usually takes about 4-6 hours, weak sulfuric acid and hydrogen peroxide are added to the glass to achieve an optimal solid-to-liquid ratio, and the film is peeled off the glass in this continuous process .


All cullet is separated from the liquid in a classifier, and the remaining material is moved to a shaker screen to separate the glass from the larger laminates.


The EVA is moved to another conveyor belt and collected, then the glass is separated and falls through the screen into the chute, where the corrosive liquid is washed away, after cleaning, the glass is moved into a container for recycling, and the remaining solution is pumped into the sedimentation tank Metal recycling.


The collected metal compounds are precipitated at the increasing pH of sodium hydroxide used in three stages, and when the solids settle and form a dense solid mixture, it is sent for processing.


There it can be processed into photovoltaic-grade raw materials for new solar photovoltaic modules, using these recycling processes to extract 90% of the glass and 95% of the photovoltaic material.