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Two researchers from
In typical fermentation, bacteria produce a limited amount of hydrogen as well as a mixture of useless acetic and butyric acids. The new process gives the bacteria an electric "boost" - approximately 0.25 volts - that allows them to convert acetic acid into carbon dioxide and hydrogen. Researchers call the hydrogen-producing MFC a BioElectrochemically-Assisted Microbial Reactor, or BEAMR. While producing hydrogen, the BEAMR cleans the wastewater used as its feedstock. It uses about one-tenth of the voltage needed for electrolysis, the hydrogen-producing process that uses electricity to break down water into hydrogen and oxygen.
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