This 50% recycled glass solar panel performs like brand new

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Of course there's no difference. Glass is one of the most recyclable materials there is.

As long as it hasn't been coloured I believe.

This might seem like a dumb question but couldn't you burn the color out during the recycling process?

It's metal ions. You can compensate for iron with manganese, but you'll still get a grayish glass with reduced transmission.

This makes sense. Thank you

"Burning it out" still leaves contamination. You need to remove it.

No processes to get the coloring out?

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