Waste Water + Bacteria = Clean Energy – ScienceNOW

“For the first time, researchers have sustainably produced hydrogen gas, a potential source of clean energy, using only water and bacteria. The challenge now, scientists say, is to scale up the process to provide large amounts of hydrogen for various purposes, such as fueling vehicles or small generators.”

I keep thinking of how to extract electricity or combustible gas from bacteria. And here someone has improved on the process to extract hydrogen in some usable quantity. Seem like there are still a few technical hurdles, but the most interesting comment to me was that they really can’t use ALL the hydrogen the bacteria produce – the bugs need the hydrogen as well. That got me thinking of milking cows – you still need to feed that calf.

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