Priligy online now, save money

New Definition for Biofuels: Using Urine to Produce Hydrogen

Hydrogen seems like a logical choice for fuel - it's energy dense and viagra tablets emits only water upon combustion - but upon closer examination we see that it's extremely expensive to make from water, so all the hydrogen in production today is canada levitra made from fossil fuels. But Gerardine Botte at Ohio University has figured out an easy and efficient way to break the bonds in urea to produce hydrogen. The process consumes roughly one quarter of the energy needed to electrolyze water. And, yes, the world has a fairly plentiful (and renewable) supply of urea. Maybe not enough to power all our cars, but it's a start.

Very simply, an inexpensive electrode oxidizes the urea creating two H2 molecules, nitrogen gas and potassium carbonate. Success! None of these chemicals are bad for the only now buy viagra online no prescription environment, and, indeed, are useful, saleable byproducts. The urea doesn't need to be pure or anything either, the process works with human urine, meaning that port-o-johns could someday become useful hydrogen-generation stations.

Of course, we don't have oceans or rivers or lakes of urea (good thing) so it is a more limited feedstock than water. The good news is, what we do have of genuine viagra for sale it is a waste product, and (especially in the case of livestock) already needs to be managed more effectively for environmental reasons. So it certainly wouldn't hurt to have an extra source of hydrogen gas while giving the world a reason to more effectively manage its waste.


60% Slash in Emissions During Jatropha Test Flight

Air New Zealand recently released the scientific findings from the jatropha-fueled test flight they conducted in late December 2008.  The flight resulted in a 60-65 percent reduction in greenhouse gas emissions from the jatropha-jet fuel blend compared to traditional jet fuel flights.

The biofuel was responsible for a 1.2 percent savings in fuel over the 12-hour flight, which equaled 1.43 tonnes of fuel.  Scientists also estimate that the decrease in fuel consumption saved around 4.5 tonnes of CO2 emissions.  The biofuel used was a 50/50 blend of jatropha and Jet A1 fuel.

These findings make the very good site 5mg viagra test flight and the jatropha blend a huge success, but now there are lots of questions to be answered regarding the production of jatropha-based fuels.  Jatropha has, until recently, been considered a great source for biofuel because it could be grown on non-arable land and required little maintenance or water.  This is true of the plant in typical situations, but reports coming out of India show that jatropha crops need attention, water and fertilizer like any other crops in order to yield large quantities, like that necessary for biofuel production.  Now that we know that it's use as a jet fuel is very promising, more research will have to be done to determine how it can be sustainably produced.

via Air New Zealand and Treehugger


NREL and Google Launch Map of America's Alternative Fuel Stations

The National Renewable Energy Labs and Google have partnered to launch a tool called TransAtlas that maps all existing and planned alternative fuel stations across the country.

The mapping tool allows you to view each type of fuel station as a layer, so you can view one at at time or all fuel types simultaneously.  The seven alternative fuels mapped are hydrogen, propane, electric (shown in photo above), liquified natural gas, compressed natural gas, E85 and biodiesel.  

The tool also allows you to view vehicle density layers for hybrid-electric, flex-fuel and diesel cars.  Electric and hydrogen stations are far behind fuels like E85 and biodiesel, but their locations correspond pretty neatly with the areas where those cars are being driven.  I'd like to think that if more of those types of stations are built in more areas, the corresponding vehicles will follow.

While it's a simple application of Google Maps, it's interesting to see the reality of alternative fuel infrastructure in the country, and how far we still have to go before non-gasoline vehicles have a real chance to survive on American roads.

via Earth2Tech


Cellulosic Ethanol Flowing at One Canadian Pump

Shell has claimed the first commercial delivery of cellulosic ethanol at a service station in Ottawa, Canada. For the next month, the station is pumping a mixture of gasoline and ethanol made from wheat straw by biofuel company Iogen.

While cellulosic ethanol is much better than corn ethanol and far less polluting than gasoline, the blend that the Shell station is offering is only 10 percent cellulosic ethanol and 90 percent gasoline. So while it's a step forward for cellulosic ethanol to have made it to a commercial pump, it's still a small step when it comes to its application and only today next day cialis emission reductions.

Shell has a 50 percent stake in Iogen's biofuel development.  The biofuel maker has been producing 5,000 liters of the fuel a day at their demonstration plant, but plans to upgrade to a plant that would allow them to produce 70 million liters a year in Saskatchewan.

Shell hopes this demonstration leads to more government funding for cellolusic ethanol production, but sees advanced, large-scale production as still being five to ten years away.

via CNET and NY Times


Algae Fuel Leader GreenFuels Goes Bust

The promise of algae fuels seems to good to be true, and now we're seeing that it just might be. Algae's ability to grow extremely fast, on small areas of land, and produce huge amounts of bio-diesel per acre has been touted a lot. But now, one of the sector's leaders, GreenFuels, has gone bust.

Not only were they unable to raise a third round of funding, but they couldn't deliver on their first contract because of technical glitches in their bio-reactor algae growth process.

GreenFuels' process is cialis no perscription non generic very similar to the processes being used by lots of other algae fuel startups, and this news has got a lot of people questioning whether algae fuel is a truly viable technology. But there are other algae companies, like Solazyme, that use completely different technologies.

In any case, I'm suddenly feeling a lot less excited about algae bio-diesel, especially with good news continuing to flow out of the cellulosic ethanol and electric battery fields.


Start   Prev   1 2 3 4 5 6 7 8 9 10   Next   End

Page 6 of 26

Are you an EcoGeek?

We've got to keep 7 billion people happy without destroying our planet. It's the biggest challenge we've ever faced....but we're taking it on. Are you with us?

The Most Popular Articles