In a nice reminder of the fact that we can never predict the unintended consequences of even small changes to a complex system, researchers at Stanford University have found that using high blends of ethanol fuel in vehicles will likely increase health problems related to ozone as well as increase the amount of certain cancer-causing chemicals in the air we breathe when compared to the use of gasoline.
It’s been a busy Fall for the making-fuel-out-of-pollution-using-nothing-but-the-power-of-the-sun crowd. First we heard about a company that says it has succeeded in creating a system that uses engineered microbes in reactors out in the desert to eat carbon dioxide and poop out diesel and ethanol. Next we heard about a crazy mirror-ring contraption that reaches amazingly high temperatures to force carbon dioxide to give up one oxygen to make a precursor to fuel. And now…
Researchers at UCLA have engineered a bacteria that can eat carbon dioxide and burp out butanol—a liquid fuel that can be substituted into our existing fuel infrastructure without modification. Yep, that’s right, even your old jalopy can burn butanol without any side effects.
In many ways plastics are simply synthetic compounds that mimic and try to improve upon substances we find widespread in nature—polymers such as you might find in wood, leaves, seeds and fur. Bio-based plastics (those derived from biological sources other than fossil fuels) have been around for more than 100 years. In fact, celluloid, the first synthetic plastic ever made was invented in the mid 1800s, and—you guessed it—was bio-based.
In 1877 Russian scientist Dimitri Mendeelev suggested that the large deposits of oil and gas we find under the surface of the Earth could be made without the decay of long-dead organisms in a process called abiotic synthesis of methane.
Since then the theory has been relegated to the back shelf due to a lack of evidence and the prevailing conventional wisdom that all deep oil and gas deposits arise from decaying prehistoric animal and plant material.
While it’s no doubt that the decay of dead animals and plants is one pathway to the creation of Earth’s oil and natural gas deposits (potentially the largest), new research done with high-tech equipment simulating the conditions of deep earth suggests that Mendeelev’s theory is correct.
In an unexpected U-turn, the U.S. Senate has agreed to continue to back research for the next generation of hydrogen cars – funding that the Obama administration had earlier proposed to cut.
The move came last Thursday as Senate members voted to commit $187 million to hydrogen research, almost as much as was promised before the indecision.
They don’t know how it works, but it does.
A team of researchers at Georgia Tech has developed a new high-tech ceramic material that could make solid oxide fuel cells less costly and less finicky, and much more durable and efficient. The material is called Barium-Zirconium-Cerium-Yttrium-Ytterbuim Oxide. [Ed note: Say that three times fast and you get a gold star.] I don’t know if it’s any less of a tongue twister, but it’s known as BZCYYb for short.
Solid oxide fuel cells are of interest because they can generate energy without the need for an expensive catalyst such as platinum, which is typically used in hydrogen fuel cells. While nanotechnology is enabling the development of hydrogen fuel cells that use less platinum, with BZCYYb the prospects look good for ditching the precious metal entirely in favor of more sustainable technology—if solid oxide systems can be developed in a commercially viable form, that is.
Lithium-ion batteries are great and all—having heralded in a new age of portable electronics and allowed for the possibility of mass-market electric cars—but they have a few major drawbacks. For instance, they have a propensity to catch fire and explode and, although they have a much better energy storage capacity than say lead-acid or nickel metal hydride (NiMH) batteries, they still weigh too much to pack more than a couple hundred miles of range into a passenger car.
As part of a National Science Foundation grant program to examine cutting edge ways to make nature work for us, a team of scientists at Iowa State University have been awarded $2 million to unravel how some plants and algae can make hydrocarbons and discover if the genes that govern that process might be isolated.
“These plants are capturing solar energy and creating something that’s chemically identical to petroleum,” said Jackie Shanks, Iowa State’s Manley R. Hoppe Professor of Chemical Engineering, in a statement.
Just about this time last year I reported on the very promising and innovative Mcgyan® biodiesel process. It was one of the most popular stories gas 2.0 ran that year, and rightly so: the breakthrough seemed to deliver the possibility of making biodiesel in mere seconds from start to finish, reducing costs by half the price of other biodiesel, producing no waste, using no chemical reactants, and using any animal fat or vegetable oil as a feedstock.
At the time the company in charge of the project, Ever Cat fuels, had only succeeded at making a small-scale pilot operation of 50,000 gallons per year. But, as of 2 days ago, the process has been completely commercialized.
This is one of those topics I’m just not sure what to think of…
When the average person hears the term fuel cell, typically what comes to mind is something that mysteriously makes electricity from hydrogen. In reality the process isn’t all that mysterious—basically the hydrogen is split into its component parts (electrons and protons) and the protons are allowed to flow through the cell, but the electrons are forced to travel another path, which creates the current (and charges the battery or runs the motors or turns on the lights).
Although the hydrogen fuel cell is the most common type of cell, you can make fuel cells that use many different things, including hydrocarbons and sugars. They all work on the same basic principal, but hydrogen fuel cells are considered superior because their only emission is water vapor and they produce lots of energy.
An enterprising and organized group of undergraduate and graduate students at Rensselaer Polytechnic Institute have fitted an old sail boat with a spiffy set of hydrogen fuel cells and plan to run the boat from Manhattan to upstate New York later this month in a “green power” tour of sorts.
I love it when college students do this kind of stuff. Seriously. If I could have stayed in college forever, I would have. Believe me, I tried.
Arizona Public Service, the state’s largest electricity provider, has secured $70.5 million in stimulus funds to expand an innovative project that turns carbon dioxide emissions from a coal power plant into biofuel using algae. While part of the funds will be used to scale up the algae processing portion, some of the funds will also be used to investigate the potential benefits of turning the coal into a gas prior to burning it for power.
The concept of creating two products — electricity and fuel — from the same process is known as cogeneration. In this case, the cogeneration also helps to reduce environmental pollution. It’s an idea that has been gathering support as a way to make coal less polluting while finding an additional revenue source to pay for the pollution control itself. In fact, a while back I reported on a similar pilot project in Oregon.
A group of researchers at Uppsala University in Sweden have discovered that a particular type of algae — with a bad reputation for causing damaging algal blooms in oceans throughout the world — produces a substance that can be used to make inexpensive, non-toxic, simple-to-build, flexible, thin and durable batteries that, after optimization, are expected to perform on par with today’s most advanced lithium-ion batteries.
The key to the discovery lies in the way in which the algae, Cladophora, produce a unique type of cellulose with a very large surface area (approximately 80 square meters of surface area per gram of material).
By coating this algal cellulose material with a thin layer of a well-known, conductive polymer, called polypyrrole (PPy), the team has “succeeded in producing a battery that weighs almost nothing and that has set new charge-time and capacity records for polymer-cellulose-based [non-metallic] batteries,” according to Gustav Nyström, a doctoral student in nanotechnology and one of the main researchers.
In a somewhat suspect interview that was posted to the web and then subsequently removed (but not before being turned into a transcript), Dick Weir — the clandestine CEO of the even more secretive EEStor — was caught on tape in a 30 minute interview covering many topics that fervent followers of the company have been curious about for a long time.
In a study to be published in August, Chinese researchers have found that waste shrimp shells can be converted into a material that makes biodiesel production faster, cheaper and more environmentally-friendly.
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