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Orange peel giving a second life to used batteries.

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Spent batteries are conventionally treated with extreme heat (over 500°C) to smelt valuable metals, which emits hazardous toxic gases. Or they use strong acid solutions applied to a crushed "mess" of battery waste.

A group of Singaporean scientists however, have found a 3rd option using orange peels, which successfully extracted around 90% of cobalt, lithium, nickel, & manganese from spent lithium-ion batteries – a comparable efficacy to the approach using hydrogen peroxide applied to crushed battery waste.  

https://revolution-green.com/two-advances-e-waste-recycling-use-fruit-peal-waste-improved-bio-leaching/



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