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Old 01-12-2008, 03:50 AM
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Default Scientists Use Sunlight to Make Fuel From CO2

Scientists Use Sunlight to Make Fuel From CO2

By Chuck Squatriglia 01.04.08, 8:00 PM

Sandia researcher Rich Diver checks out the solar furnace which will be the
initial source of concentrated solar heat for converting carbon dioxide to
fuel. Eventually parabolic dishes will provide the thermal energy.

Researchers at Sandia National Laboratories in New Mexico have found a way
of using sunlight to recycle carbon dioxide and produce fuels like methanol
or gasoline.

The Sunlight to Petrol, or S2P, project essentially reverses the combustion
process, recovering the building blocks of hydrocarbons. They can then be
used to synthesize liquid fuels like methanol or gasoline. Researchers said
the technology already works and could help reduce greenhouse-gas emissions,
although large-scale implementation could be a decade or more away.
"This is about closing the cycle," said Ellen Stechel, manager of Sandia's
Fuels and Energy Transitions department. "Right now our fossil fuels are
emitting CO2. This would help us manage and reduce our emissions and put us
on the path to a carbon-neutral energy system."

The idea of recycling carbon dioxide is not new, but has generally been
considered too difficult and expensive to be worth the effort. But with oil
prices exceeding $100 per barrel and concerns about global warming mounting,
researchers are increasingly motivated to investigate carbon recycling. Los
Alamos Renewable Energy, for example, has developed a method of using CO2 to
generate electricity and fuel.

S2P uses a solar reactor called the Counter-Rotating Ring Receiver Reactor
Recuperator, or CR5, to divide carbon dioxide into carbon monoxide and

"It's a heat engine," Stechel said. "But instead of doing mechanical work,
it does chemical work."

Lab experiments have shown that the process works, Stechel said. The
researchers hope to finish a prototype by April.

The prototype will be about the size and shape of a beer keg. It will
contain 14 cobalt ferrite rings, each about one foot in diameter and turning
at one revolution per minute. An 88-square meter solar furnace will blast
sunlight into the unit, heating the rings to about 2,600 degrees Fahrenheit.
At that temperature, cobalt ferrite releases oxygen. When the rings cool to
about 2,000 degrees, they're exposed to CO2.

Since the cobalt ferrite is now missing oxygen, it snatches some from the
CO2, leaving behind just carbon monoxide -- a building block for making
hydrocarbons -- that can then be used to make methanol or gasoline. And with
the cobalt ferrite restored to its original state, the device is ready for
another cycle.

Fuels like methanol and gasoline are combinations of hydrogen and carbon
that are relatively easy to synthesize, Stechel said. Methanol is the
easiest, and that's where they will start, but gasoline could also be made.
However, creating a powerful and efficient solar power system to get the
cobalt ferrite hot enough remains a major hurdle in implementing the
technology on a large scale, said Aldo Steinfeld, head of the Solar
Technology Laboratory at the Paul Scherrer Institut in Switzerland, in an

He and Stechel said the technology could be 15 to 20 years from viability on
an industrial scale.

The Sandia team originally developed the CR5 to generate hydrogen for use in
fuel cells. If the device's rings are exposed to steam instead of carbon
dioxide, they generate hydrogen. But the scientists switched to carbon
monoxide, so the fuels they produce would be compatible with existing

Stechel said the Sandia team envisions a day when coal-fired power plants
might have large numbers of CR5s, each reclaiming 45 pounds of carbon
dioxide using reclamation technology currently under development and
producing enough carbon monoxide to make 2.5 gallons of fuel. The Sunlight
to Petrol process also raises the possibility that liquid hydrocarbon fuels
might one day be renewable provided CO2 reclamation reaches a point where
the greenhouse gas can be snatched directly from the air. Such a process is
being explored by Global Research Technologies and Klaus Lakner of Columbia
University, among others.


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Old 05-15-2008, 11:07 PM
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Posts: 281
Default Re: Scientists Use Sunlight to Make Fuel From CO2

I've been studying CO2 and 'global warming' a fair bit lately. As hard as it may be to believe, CO2 emissions don't really have an effect on increasing current global temperatures. Yes, Virginia there is a conspiracy going on, and it's related to the UN, and the Club of Rome depop programs.

I don't mean to be facetious here, but trees already do what this proposed high tech process is said to do (convert CO2 in to fuel) by sucking in CO2, growing and then getting chopped down for fuel.

After a week or so of studying various results, most people who are not too brainwashed can see that CO2 is not, and has never been a pollutant, and it is part of the natural carbon cycle on Earth. There's lots to read on this topic, which I encourage, there has been so much propaganda done on this topic it's insane.

The Global Warming Test
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