Scientists develop method to create electricity out of coffee waste

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Scientists have developed a method to produce electricity out coffee waste, created during the process of turning coffee berries into powder.

The wastewater generated during the process is fed to microbes whose produce run a fuel cell that creates electric energy.

The technique was developed by a team led by the University of Surrey, working with researchers in Colombia.

The researchers are waiting for funding to build a prototype in farms in Colombia.

Globally 9.5m tons of coffee is produced each year. While washing of coffee beans and seeds and the making of instant coffee produce a large amount of water the new method makes sure that it not just removes the contaminants from the water but makes electricity in the process.

Coffee waste has been used previously in the form of ‘biology’ and other forms of biofuels before. But this is the first attempt to create electricity from such waste.

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