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Feather Fibers Fluff Up Hydrogen Storage Capacity

Date:
June 24, 2009
Source:
American Chemical Society
Summary:
Scientists in Delaware say they have developed a new hydrogen storage method -- carbonized chicken feather fibers -- that can hold vast amounts of hydrogen, a promising but difficult to corral fuel source, and do it at a far lower cost than other hydrogen storage systems under consideration.

Scientists in Delaware say they have developed a new hydrogen storage method — carbonized chicken feather fibers — that can hold vast amounts of hydrogen, a promising but difficult to corral fuel source, and do it at a far lower cost than other hydrogen storage systems under consideration.

The research, presented at the 13th Annual Green Chemistry & Engineering Conference, could eventually help overcome some of the hurdles to using hydrogen fuel in cars, trucks and other machinery.

"Carbonized chicken feather fibers have the potential to dramatically improve upon existing methods of hydrogen storage and perhaps pave the way for the practical development of a truly hydrogen-based energy economy," says Richard P. Wool, Ph.D., professor of chemical engineering and director of the Affordable Composites from Renewable Resources program at the University of Delaware in Newark.

The research was presented by Erman Senoz, a graduate student in the Department of Chemical Engineering at the University of Delaware in Newark.

Chicken feather fibers are mostly composed of keratin, a natural protein that forms strong, hollow tubes. When heated, this protein creates crosslinks, which strengthen its structure, and becomes more porous, increasing its surface area. The net result is carbonized chicken feather fibers, which can absorb as much or perhaps more hydrogen than carbon nanotubes or metal hydrides, two other materials being studied for their hydrogen storage potential, Wool says. Plus, they're cheap.

Using carbonized chicken feathers would only add about $200 to the price of a car, according to Wool. By comparison, making a 20-gallon hydrogen fuel tank that uses carbon nanotubes could cost $5.5 million; one that uses metal hydrides could cost up to $30,000, Wool says.

Hydrogen, the most common element in the universe, has long been touted as a clean and abundant energy alternative to fossil fuels. But its physical characteristics make it very difficult to store and transport — as a pressurized gas it takes up about 40 times as much space as gasoline; as a liquid it needs to be kept at extremely low temperatures.

Wool estimates that it would take a 75-gallon tank to go 300 miles in a car using carbonized chicken feather fibers to store hydrogen. He says his team is working to improve that range.

"The problem with hydrogen as a gas or liquid is its density is too low," Wool says. "Using currently available technology, if you had a 20-gallon tank and filled it with hydrogen at typical room temperature and pressure, you could drive about a mile. When we started we didn't know how well carbonized chicken feathers would work for hydrogen storage, but we certainly suspected we could do a lot better than that."

In addition to hydrogen storage, Wool and his colleagues are working on ways to transform chicken feather fibers into a number of other products including hurricane-resistant roofing, lightweight car parts and bio-based computer circuit boards.

The conference is organized by the ACS Green Chemistry Instituteฎ, a nonprofit organization devoted to promoting and advancing the discovery and design of chemical products and processes that eliminate the generation and use of hazardous substances in all aspects of the global chemical enterprise.

This research, "Hydrogen Storage On Carbonized Chicken Feather Fibers," (paper #14), will be presented on June 23 at the University of Maryland University College, during the symposium, 'Technologies for a Hydrogen Economy."


Story Source:

The above story is based on materials provided by American Chemical Society. Note: Materials may be edited for content and length.


Cite This Page:

American Chemical Society. "Feather Fibers Fluff Up Hydrogen Storage Capacity." ScienceDaily. ScienceDaily, 24 June 2009. <www.sciencedaily.com/releases/2009/06/090623120833.htm>.
American Chemical Society. (2009, June 24). Feather Fibers Fluff Up Hydrogen Storage Capacity. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2009/06/090623120833.htm
American Chemical Society. "Feather Fibers Fluff Up Hydrogen Storage Capacity." ScienceDaily. www.sciencedaily.com/releases/2009/06/090623120833.htm (accessed October 20, 2014).

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