Edward Willett

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Fuel from germs

[podcast]http://edwardwillett.com/wp-content/upLoads//2010/01/Fuel-from-Germs.mp3[/podcast] For years, we’ve been turning crops such as corn, wheat and sugar beets into fuel, using yeast to convert sugar into alcohol. But there’s an obvious problem with this. That stuff we’re turning into fuel is also food for humans and feed for animals. (And as an aside, how come we always call it “animal feed” as opposed to “animal food”? And why don’t we ever refer to “human feed”? Hmm?) A lot of the plant is wasted when you grow crops for fuel or food. The leaves and stems, with their tough cell walls made of cellulose, hemicellulose and lignin, are more of a nuisance than anything else. Wouldn’t it be great if there were a use for what is now plowed ...

Posted by Edward Willett at 12:36, January 29th, 2010 under Blog, Columns, Science Columns | Comment now »

Liquid fuel from solar power

[podcast]http://edwardwillett.com/wp-content/upLoads//2009/07/Liquid-Fuels-from-Solar-Power.mp3[/podcast] In recent years, scientists and engineers have turned to biofuels—fuels generated from living things, and hence renewable—as a means of weaning us off of fossil fuels in favor of something cleaner, less likely to run out, and less wrapped up in international geopolitics. Fermenting the sugars found in corn or other grains into ethanol has been around for a long time, of course, and it’s pretty much a proven technology. On the other hand, do we really want to be turning food into fuel? More promising have been recent advances in turning lignocellulose, the stuff that makes up the cell walls in plants, into ethanol and other fuels: that would allow us to use grasses, wood chips, straw and other non-food as ...

Posted by Edward Willett at 14:42, July 28th, 2009 under Blog, Columns, Science Columns | Comment now »

Making fuel from air and water

Download the audio version.Get my science column weekly as a podcast.We can and do recycle all sorts of things. Paper, plastic, glass (OK, that last one not so much right now), Christmas fruitcakes...the list goes on and on.Wouldn’t it be great if we could also recycle the hydrocarbons we burn as fuel? Imagine if you could somehow take the carbon dioxide out of the air, recombine it with hydrogen, and produce new fuels. You could lessen the need for oil and slow the build-up of carbon dioxide in the atmosphere at the same time.It sounds like wishful thinking—but scientists at Los Alamos National Laboratory say they can do it....

Posted by Edward Willett at 20:48, February 18th, 2008 under Blog, Science Columns | Comment now »

Vacuuming away CO2…

This might be useful down near Weyburn, where they're using CO2 injection in the oilfields. The CO2 currently comes by pipeline from Beulah, North Dakota:...the new device captures carbon dioxide molecules that are already in the air and releases them as a pure carbon dioxide stream. This stream can be sequestered or used to enhance oil recovery. "We are trapping carbon dioxide about 1,000 times faster than a tree does," said study leader Klaus Lackner of Columbia University.

Posted by Edward Willett at 17:51, May 9th, 2007 under Blog | Comment now »

Mrs. Beeton’s Ad of the Day

All the advantages of a gas cooker with none of the disadvantages, this oil cooker promises it "Cooks the Food without Cooking the Cook," and who could argue with that?I find it interesting how many of these old ads try to connect something that would seem to be merely a matter of simple preference--cooking with gas or oil--and try to convince you that had a connection to your health. Although, come to think of it, that's not exactly an unknown approach to advertising products today, is it?Interestingly enough, there is an Anglo-American Oil Co. Ltd. today, but it ...

Posted by Edward Willett at 23:00, April 14th, 2007 under Blog | Comment now »

Turning anything to oil

Imagine a process that can turn any kind of organic waste into high-grade oil. It sounds too good to be true. But that’s the promise of the thermal depolymerization process (TDP), outlined in the May issue of the respected popular science magazine Discover (from which most of the following information is drawn). Naturally occurring oil comes from one-celled plants and animals that died in the oceans, settled to the floor, decomposed, and were eventually crushed underneath the planet’s sliding tectonic plates. The pressure and heat far underground broke down the creatures’ long chains of hydrogen, oxygen and carbon-bearing molecules, called polymers, turning them into petroleum hydrocarbons, which have much shorter molecular chains. Scientists have tried to ...

Posted by Edward Willett at 4:35, May 15th, 2003 under Blog, Columns, Science Columns | Comment now »

Fossil fuels

Our modern society is based on "fossil fuels," which may sound to you like we're burning dinosaur bones for heat. We aren't, but we are burning the remains of plants and animals that lived millions of years ago, releasing the solar energy the plants captured through photosynthesis and the animals captured by eating the plants. A coal bed starts out (we think--very few people have the patience to directly observe a process that takes millions of years) as a silted-over peat bog. As the layer of sediment over the bog increases, it forces water out of the peat. The peat becomes richer in carbon and deficient in oxygen, until eventually hydrogen stops combining ...

Posted by Edward Willett at 22:43, July 13th, 1993 under Blog, Columns, Science Columns | Comment now »