Science-Technology
See other Science-Technology Articles
Title: Hydrogen Fuel Production Breakthrough Could Revolutionize Alternative Energy Market
Source:
rED oRBIT
URL Source: http://www.redorbit.com/news/scienc ... ernative-energy-market-040413/
Published: Apr 4, 2013
Author: Virginia Tech
Post Date: 2013-04-04 21:21:33 by jwpegler
Keywords: None
Views: 4990
Comments: 10
New method is environmentally friendly and inexpensive A team of Virginia Tech researchers has discovered a way to extract large quantities of hydrogen from any plant, a breakthrough that has the potential to bring a low-cost, environmentally friendly fuel source to the world. “Our new process could help end our dependence on fossil fuels,” said Y.H. Percival Zhang, an associate professor of biological systems engineering in the College of Agriculture and Life Sciences and the College of Engineering “Hydrogen is one of the most important biofuels of the future.” Zhang and his team have succeeded in using xylose, the most abundant simple plant sugar, to produce a large quantity of hydrogen that previously was attainable only in theory. Zhang’s method can be performed using any source of biomass. The discovery is a featured editor’s choice in an online version of the chemistry journal Angewandte Chemie, International Edition. This new environmentally friendly method of producing hydrogen utilizes renewable natural resources, releases almost no zero greenhouse gasses, and does not require costly or heavy metals. Previous methods to produce hydrogen are expensive and create greenhouse gases. The U.S. Department of Energy says that hydrogen fuel has the potential to dramatically reduce reliance of fossil fuels and automobile manufactures are aggressively trying to develop vehicles that run on hydrogen fuel cells. Unlike gas-powered engines that spew out pollutants, the only byproduct of hydrogen fuel is water. Zhang’s discovery opens the door to an inexpensive, renewable source of hydrogen. Jonathan R. Mielenz, group leader of the bioscience and technology biosciences division at the Oak Ridge National Laboratory, who is familiar with Zhang’s work but not affiliated with this project, said this discovery has the potential to have a major impact on alternative energy production. “The key to this exciting development is that Zhang is using the second most prevalent sugar in plants to produce this hydrogen,” he said. “This amounts to a significant additional benefit to hydrogen production and it reduces the overall cost of producing hydrogen from biomass.” Mielenz said Zhang’s process could find its way to the marketplace as quickly as three years if the technology is available. Zhang said when it does become commercially available, it has the possibility of making an enormous impact. “The potential for profit and environmental benefits are why so many automobile, oil, and energy companies are working on hydrogen fuel cell vehicles as the transportation of the future,” Zhang said. “Many people believe we will enter the hydrogen economy soon, with a market capacity of at least $1 trillion in the United States alone.” Obstacles to commercial production of hydrogen gas from biomass previously included the high cost of the processes used and the relatively low quantity of the end product. But Zhang thinks he has found the answers to those problems. For seven years, Zhang’s team has been focused on finding non-traditional ways to produce high-yield hydrogen at low cost, specifically researching enzyme combinations, discovering novel enzymes, and engineering enzymes with desirable properties. The team liberates the high-purity hydrogen under mild reaction conditions at 122 degree Fahrenheit and normal atmospheric pressure. The biocatalysts used to release the hydrogen are a group of enzymes artificially isolated from different microorganisms that thrive at extreme temperatures, some of which could grow at around the boiling point of water. The researchers chose to use xylose, which comprises as much as 30 percent of plant cell walls. Despite its abundance, the use of xylose for releasing hydrogen has been limited. The natural or engineered microorganisms that most scientists use in their experiments cannot produce hydrogen in high yield because these microorganisms grow and reproduce instead of splitting water molecules to yield pure hydrogen. To liberate the hydrogen, Virginia Tech scientists separated a number of enzymes from their native microorganisms to create a customized enzyme cocktail that does not occur in nature. The enzymes, when combined with xylose and a polyphosphate, liberate the unprecedentedly high volume of hydrogen from xylose, resulting in the production of about three times as much hydrogen as other hydrogen-producing microorganisms. The energy stored in xylose splits water molecules, yielding high-purity hydrogen that can be directly utilized by proton-exchange membrane fuel cells. Even more appealing, this reaction occurs at low temperatures, generating hydrogen energy that is greater than the chemical energy stored in xylose and the polyphosphate. This results in an energy efficiency of more than 100 percent — a net energy gain. That means that low-temperature waste heat can be used to produce high-quality chemical energy hydrogen for the first time. Other processes that convert sugar into biofuels such as ethanol and butanol always have energy efficiencies of less than 100 percent, resulting in an energy penalty. In his previous research, Zhang used enzymes to produce hydrogen from starch, but the reaction required a food source that made the process too costly for mass production. The commercial market for hydrogen gas is now around $100 billion for hydrogen produced from natural gas, which is expensive to manufacture and generates a large amount of the greenhouse gas carbon dioxide. Industry most often uses hydrogen to manufacture ammonia for fertilizers and to refine petrochemicals, but an inexpensive, plentiful green hydrogen source can rapidly change that market. “It really doesn’t make sense to use non-renewable natural resources to produce hydrogen,” Zhang said. “We think this discovery is a game-changer in the world of alternative energy.”
Post Comment Private Reply Ignore Thread
Top • Page Up • Full Thread • Page Down • Bottom/Latest
#1. To: jwpegler (#0)
Hydrogen can Only 'carry' Energy. A non Starter.
Smoke another joint, you no-nothing loser.
cold compost fusion
If you ... don't use exclamation points --- you should't be typeing ! Commas - semicolons - question marks are for girlie boys !
Eat shit and bark at the moon, you Zio Fascist.....;}
Get it while you can, people; I dare say the webmaster will pull it down: rogerwaters.com/forum/ind...mment/21081#Comment_21081 Since, as I say, it probably won’t stay up for long, I might as well copy it here: I hate to come in here with my political warfare skills all honed, when you’re all such nice, innocent people, except I suppose for agoldstein, who is a seasoned hasbara operator with all the right lines, but here I am, and first of all I’d like to express my sympathy to all you nice people who were looking forward to seeing Roger in the flesh, but unfortunately the Jewish leadership is well able to get its own way and drag straggling little Jewish liberal organisations like the 92nd Street Young Men’s and Young Women’s Hebrew Association back into line. Something outsiders don’t always understand is that Jewish society is nothing like a ‘democracy’. It’s a totalitarian society ruled by the very rich in association with their pet rabbis, and it hasn’t changed much in the last couple of millennia. This is why ordinary Jews can be so extraordinarily lovable without ever managing to deflect the course of Jewish history by even a fraction of a degree. Now to deal with agoldstein’s point, which is pretty much hasbara 101, it is only necessary to understand that the mid-East is the way it is because we made it that way. By ‘we’ I mean successive waves of European and American imperialists. What we didn’t want was socialist or even faintly leftish nationalist regimes. That’s why, for instance, we used our secret services, and very large amounts of hard currency (I’ll return to that), to dispose of Nasser in Egypt, Qasim in Iraq, Mosaddegh in Iran, and so on. What we wanted was reliable dictators who would smash the left — even the moderate left, what you Americans would call the ‘progressives’. And by smash, I mean kill them, usually after torturing them to find out all their contacts. We paid for that. We oversaw it (specifically, CIA and MI6 oversaw it). That’s what we do. Just like in central America. Now to return to the ‘hard currency’. Have you ever wondered why it should be that western currencies, and most of all the currency of the empire du jour, presently the USA, should be so hard, so desirable, even when as you probably know the dollar has no relation to any objective assets such as gold, but is printed and doled out by the billion by the federal reserve to the US Treasury, which spends most of it on the military? Has it ever struck you that central bankers in general, and US ones in particular, are all Jewish? Have you ever wondered why you aren’t allowed to mention that fairly obvious fact when you’re discussing US foreign policy, and the US’s strange adulation for the tiny and obnoxious Zionist entity? Have you ever had the feeling that Chomsky isn’t telling you the whole story? Well, the answer is obvious: the communications media (oddly Jewish too) have framed the issue so that anyone who mentions this is immediately painted as a neo-Nazi. I’m not a neo-Nazi, of course; I’m a Marxist. But even Marxists must from time to time consider the effect of a monopoly money supply. I have been on the web for ten years or so, since just after 9/11 in fact, and I’ve seen all the angles this partially controlled, partially anarchic debate can take. I’m sure enough of myself these days to feel able to state the obvious without fear of getting caught up in juvenile debating tangles by hasbara operatives like agoldstein. And my message is, learn to say the unsayable. They can’t shoot you for it. Not yet, anyway. Peace.
Ok, so your chart has what to do with the subject at hand -- hydrogen fuel cells??? It has nothing to do with hydrogen fuel cells. Take another hit of LSD and post again next week.
Who is "agoldstein" and who is "Roger"? I don't think I've seen either of them here. What are you tripping on today? Shrooms???
Ok, so your ad hominem to me had exactly the same question..... You want to talk about Peak Oil, sure. Ad Hominems = Disinfo, which means I can post whatever the Fuck I think is a relevant retort. ;}
A resident Hasbara Agent on another site. And you tell me you don't know who rogerwaters is. please.
Shrooms??? ANOTHER AD HOMINEM..... And so: Thu Apr 4, 2013 4:25PM GMT 0 LAST UPDATE Share | Email | Print The pilot of a US Air Force fighter jet has died when the military aircraft crashed in eastern Afghanistan, Press TV reports. The warplane went down while it was conducting military operations on Thursday. The US-led North Atlantic Treaty Organization (NATO) said the wreckage of the plane and the body of the dead pilot have been recovered. Earlier in the day, the Taliban alleged to have shot down a US military plane, killing several foreign troops. Keep it up, J, and soon we'll have ALL of the NEWS that LF is DESPERATELY trying to Avoid here.....RFLMFAO.....8D
#2. To: mcgowanjm (#1)
"we must as a species go into a period of shrinkage that we have not experienced since the Dark Ages and the Black Plague" -- lucysmom
#3. To: jwpegler (#0)
this reaction occurs at low temperatures, generating hydrogen energy that is greater than the chemical energy stored in xylose and the polyphosphate. This results in an energy efficiency of more than 100 percent — a net energy gain
#4. To: jwpegler (#2)
(Edited)
Smoke another joint, you no-nothing loser.
#5. To: All (#4)
#6. To: mcgowanjm (#4)
Eat shit and bark at the moon, you Zio Fascist.....;}
"we must as a species go into a period of shrinkage that we have not experienced since the Dark Ages and the Black Plague" -- lucysmom
#7. To: mcgowanjm (#5)
"we must as a species go into a period of shrinkage that we have not experienced since the Dark Ages and the Black Plague" -- lucysmom
#8. To: jwpegler (#6)
Ok, so your chart has what to do with the subject at hand -- hydrogen fuel cells???
#9. To: jwpegler (#7)
agoldstein
#10. To: jwpegler (#7)
What are you tripping on today?
Top • Page Up • Full Thread • Page Down • Bottom/Latest
[Home] [Headlines] [Latest Articles] [Latest Comments] [Post] [Mail] [Sign-in] [Setup] [Help] [Register]