Catch up on stories from the past week (and beyond) at the Slashdot story archive

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×
Power

+ - The fuel cell that turns poop into power-> 1

Submitted by
MrSeb
MrSeb writes "Bioengineers at Oregon State University (OSU) have developed a microbial fuel cell that can treat waste water — and generate significant amounts of electricity at the same time. The microbial fuel cell (MFC) works much like a normal fuel cell, but it uses waste water as a fuel (instead of hydrogen or ethanol), and specially-crafted bacteria act as a catalyst (instead of platinum). In the case of this fuel cell, developed by Hong Liu and her OSU colleagues, waste water comes into the fuel cell (at the anode), and bacteria oxidizes the organic compounds, producing spare electrons that flow to the cathode — creating electricity. The anode and cathode are separated by a membrane that only clean water can pass through, purifying the waste water. All told, the MFC produces two kilowatts of power per cubic meter of bioreactor volume — not a huge amount, but apparently 10 to 50 times more power electricity than other MFCs on the market. Compare this MFC with conventional "activated sludge," which has been the standard method of treating water for almost 100 years. In the US alone, according to OSU, water treatment makes up 3% of the country's total power consumption."
Link to Original Source
This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

The fuel cell that turns poop into power

Comments Filter:
  • Aunty Entity: We call it Underworld. That's where Bartertown gets its energy.
    Max: What, oil? Natural gas?
    Aunty Entity: Pigs.
    Max: You mean pigs like those?
    Aunty Entity: That's right.
    Max: Bullshit!
    Aunty Entity: No. Pig shit.
    Max: What?
    The Collector: Pig shit. The lights, the motors, the vehicles, all run by a high-powered gas called methane. And methane cometh from pig shit.

"I am, therefore I am." -- Akira

Working...