Tag Archives: Microbial fuel cell

Energy from sewage- revisited

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We reported yesterday about Dr. Bretschger’s (J. Craig Venter Institute) MFC (microbial fuel cells) to recover energy from wastewater.  Today, we’ll discuss a slightly different version, under development at Penn State University and for which results were recently published in Science.

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Sewage as an energy source?

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One of my theses involved the conversion of Honest-to-Goodness Solid Waste (HGSW) to energy.  The process made sense then- and makes even more sense now.  (Believe it or not, there’s only one company examining this process on a large scale, some 4 decades later.)   But, we also need to treat our liquid wastes (sewage)- because we want to keep our rivers and streams (which is where we discharged those treated waters) safe.  Amazingly, we employ about 2% of our energy supply to treat this waste stream.

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