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  • HUMANITY IS RUNNING ON FULL POWER. FROM INDOOR PLUMBING, TO THE LIGHTS IN OUR

  • HOUSES, TO OUR CARS, DEVICES WE'RE AN ENERGIZED SOCIETY.

  • IN A WORLD WHERE PEOPLE LIVE IN FEAR OF RUNNING OUT OF ENERGY, A TEAM OF UNIQUE RESEARCHERS

  • HAVE FOUND A POTENTIALLY INFINITE POWER SOURCE. MEET DOCTOR LENNY TENDER. HE IS A RESEARCH

  • CHEMIST AT THE NAVAL RESEARCH LABORATORY. HE'S THE PRINCIPAL INVESTIGATOR BEHIND THE

  • BENTHIC MICROBIAL FUEL CELL. Benthic microbial fuel cell is a device that

  • extracts electricity from the sea floor and it's being developed to persistently operate

  • oceanographic sensors. Nearly all scientific sensors that go into the marine environment

  • are battery powered. So what the benthic microbial fuel cell does is it actually draws electricity

  • out of the bottom of the sea floor. That's what benthic means; it's the interface between

  • the sediment on the bottom of a marine environment and the overlying water. It's able to generate

  • electricity just like a windmill. It's an energy harvester.

  • The sediment actually has quite a bit of fuel in it. If you can think of anything that has

  • ever lived in the marine environment; phytoplankton, sea creatures, etc. When they die they wind

  • up settling down on the sea floor and it's just like leaves on your lawn. So those creatures,

  • as they start decomposing , that represents a pretty potent fuel source. Glucose for example.

  • And that is the geological precursor for petroleum. And it's sort of sitting there mixed into

  • the sediment on the sea floor. That's a very useful fuel. And by a fuel I mean that this

  • is something that a microorganism can use to acquire energy from. It's also something

  • that we can use to acquire energy from to operate marine devices.

  • FUTURE ENERGY SOURCES COULD COME FROM SOME PRETTY UNLIKELY PLACES.

  • LIKE WASTE WATER, FOR EXAMPLE. Waste water treatment conventionally requires

  • a lot of energy. And we're right next door here to a massive waste water treatment facility.

  • It consumes 36 megawatts of electricity to treat that waste water. But the inherent energy

  • represented by the organic matter which is the fuel in the waste water can be used to

  • generate electricity so there's an opportunity to flip that equation upside down and to actually

  • think of waste water treatment plants as power stations generating power.

  • AND WHY STOP WITH WASTE WATER? DR. TENDER SAYS THAT THERE'S A POTENTIAL TO TAKE THIS

  • ENERGY UTILIZER TO THE SKIES. We actually have organisms that we've isolated

  • from the benthic microbial fuel cell, they're very good at accepting the electrons from

  • electrodes and reducing carbon dioxide. So now we have to get them to take the reduced

  • carbon dioxide. So now we have to get them to take the reduced carbon dioxide and make

  • a fuel. So what does that mean? So you could actually have a large facility that would

  • essentially suck the carbon dioxide out of the air, and at the end of it you might have

  • a valve and out would come fuel that you could [use to] operate your car. All the fuel that

  • we're getting now, you know the petroleum-based fuel we?re pumping out of the ground. And

  • all the carbon has been sequestered underground and we burn it and we're dumping more carbon

  • dioxide into the atmosphere. This is an opportunity to start drawing on the carbon dioxide that's

  • already in the atmosphere and sucking it out and then generating a fuel.

  • NRL SCIENCE SOLVING THE CHALLENGES OF TOMORROW

HUMANITY IS RUNNING ON FULL POWER. FROM INDOOR PLUMBING, TO THE LIGHTS IN OUR

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B2 中上級

微生物を使って発電する (Using Microbes to Generate Electricity)

  • 25 6
    songwen8778 に公開 2021 年 01 月 14 日
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