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US Navy Tries To Turn Seawater Into Jet Fuel

Posted August 20, 2009 7:43 AM

From Slashdot:

The New Scientists reports that faced with global warming and potential oil shortages, the US Navy is experimenting with making jet fuel from seawater by processing seawater into unsaturated short-chain hydrocarbons that with further refining could be made into kerosene-based jet fuel. The process involves extracting carbon dioxide dissolved in the water and combining it with hydrogen — obtained by splitting water molecules using electricity — to make a hydrocarbon fuel, a variant of a chemical reaction called the Fischer-Tropsch process, which is used commercially to produce a gasoline-like hydrocarbon fuel from syngas, a mixture of carbon monoxide and hydrogen often derived from coal.

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#1

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 8:40 AM

"... extracting carbon dioxide dissolved in the water ..."

Wouldn't it be easier to use the CO2 from a (coal, oil or gas) power plant?

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#2
In reply to #1

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 9:56 AM

There aren't too many of those in the South Pacific.....

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#3
In reply to #1

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 10:14 AM

I think they are trying to make the carrier more selfsufficent......never saw a US Naval Aircraft carrier on land before.

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#4
In reply to #3

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 11:16 AM

May've missed it, but I didn't see any references to carriers (or the South Pacific, PWSlack) - only thing I saw mentioning location was that the research is being done by "a Naval Research Laboratory chemist in Washington DC".

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#5
In reply to #4

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 12:53 PM

oh, oh, assumptions being........navy and jet fuel.

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#7
In reply to #5

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 3:06 AM

Whats to stop the navy refining jet fuel on land?

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#8
In reply to #7

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 4:03 AM

nothing at all .......... but look at post #3

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#9
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Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 5:03 AM

But if you read the original blog a carrier is not mentioned.

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#10
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Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 7:27 AM

refer to post #4 and #6, while your at it log in.

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#11
In reply to #10

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 7:45 AM

Hey! Drop it! You're just making assumptions, and don't want to admit you might be wrong.

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#12
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Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 7:50 AM

Its you again, Hello Ben Franklin, read post #5

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#13
In reply to #3

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 9:34 AM

You missed the "mock-up" carrier where the Doolittle fliers trained for the Tokyo raid. Sixteen B25B Mitchell bombers trained on land to verify that they could take off, fully loaded, from the deck of the USS Hornet.

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#14
In reply to #13

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 9:49 AM

I didn't miss it, but I was just looking at the reasoning.

The point was, keeping the carriers at sea for longer periods of time. With fewer supply ship transfers. And that was my assumption.

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#6

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/20/2009 11:27 PM

A bit of conjecture:

There is probably a Nuclear reactor involved to make heat & electricity. No need for efficiency, just kerosene... No need to go ashore for much of anything except food & munitions.

I suppose tomorrow's story will involve soylent green or flight deck green houses

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#15
In reply to #6

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 12:40 PM

MMMMMMMMMMMMMMMMM soylent green!!!! IT'S PEOPLE!!!AAAAAAAAAAA

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#16
In reply to #15

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 6:40 PM

The armed forces[Navy in this case] would like to be as self sufficient as possible. of course they can refine fuel on land, but the nearest friendly land might be 1000's of miles away. All the US armed forces are are standardizing diesel as the preferred transportation fuel.

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#17
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Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 6:51 PM

but the nearest friendly land might be 1000's of miles away.

friendly maybe, but not welcome

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#18
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Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/21/2009 7:20 PM
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#19

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/26/2009 6:55 AM

There is some similar research being done elsewhere. Maybe all the parties could get their heads together?

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#20
In reply to #19

Re: US Navy Tries To Turn Seawater Into Jet Fuel

08/26/2009 11:07 AM

I repeat

Seriously the us navy isn't bragging about efficiency

When you're 3000 miles from the gas station & the needle's on "E" efficiency is an after thought...

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#21
In reply to #20

Re: US Navy Tries To Turn Seawater Into Jet Fuel

09/13/2009 12:48 PM

But then, if they'd been more efficient then the needle wouldn't be on empty!

Chas

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