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Microbial fuel cell
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The microbial fuel cell: generating electricity from sewage

In the late 19th century, gaslights used gas collected from rotting sewage. Believe it or not, technology has come full circle, and it is once again possible to gain energy, this time electricity, from sewage. We don’t have to give up our modern wastewater treatment plants and return to unsanitary conditions to do it, either. [...]

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