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Should the Renewable Fuel Standard be Scrapped, or Revised?

By Jim Lane, Biofuels Digest
November 2, 2011   |   5 Comments
BP North America chief Susan Ellerbusch makes the case for "No."

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5 Reader Comments
Comment
1 of 5
November 4, 2011
BP's facility will produce 36 million gallons of fuel per year in 2014. That sounds impressive until you know that the US uses over 375 million gallons PER DAY. (http://seattletimes.nwsource.com/html/opinion/2001918066_gascomment30.html) What is the net energy gained by production of these fuels? How much fossil fuel input is needed to produce this "renewable" fuel? We should be focusing on designing our communities so that we don't need cars at all.
Comment
2 of 5
November 4, 2011
Jim: You just do not get it ! There is not enough crop residues nor crops to make the required amount of biofuels. We need the crops to feed the U.S. population and for export. Biofuelds when used in autos still create carbon dioxide ! Biofuels is just a "stop-gap" measure until we get hydrogen trucks and autos.


We have been funded and have on our drawing board for the creation of 1,000 hydrogen fueling stations within California and the main higways going east. We also will be converting 500 each 18 wheelers over to hydrogen since the U.S. tranports its food and goods via large trucks. Ford, GM, Mercedes, Toyota and others have hydrogen autos ready to go waiting for the hydrogen stations.

Dr. Reynolds , Mgr
Eco-Engineers Corp.
Comment
3 of 5
November 5, 2011
Public transportation systems can be quite energy wasteful when underutilized. An empty bus or with a small number of riders consumes more fuel than if the riders drove their own cars. Many of the cities buses drive through the night empty. They must do this in case a rider needs a ride some were on the route. A better solution would be PTOD system (Public Transportation On Demand). Riders could schedule pickups and get updates on pickup times and locations. This would reduce fuel and personal cost. Also could improve wait times. Riders could use an APP or cites web site to schedule pickup times. Schedule times could only be done when rider volume is low. The PTOD would automatically alter routs due accidents or traffic congestion. You could also be Text or Emailed at a given time before the busses arrival.
Comment
4 of 5
November 5, 2011
Hydrogen is the lightest and one of the most abundant elements on the planet. But most of the hydrogen is bound up with oxygen in the form of water, or in hydro carbon chemical compounds called fossil fuels. So if you want to get fuel for your hydrogen powered you could strip the hydrogen from a fossil fuel source. This process is called reforming. Or you could get your hydrogen from water by using a process called electrolyses. The down side of this is that the hydrogen oxygen bound is very strong and requires four times more energy than you will get back from the fuel cell. Then there is the problem hydrogen gas storage. Hydrogen gas takes up a lot of space, and requires extremely low temperature to liquefy. Hydrogen doesn't compress easily, and is compressed into tanks at pressure of 10,000 PSI or higher. This requires significant energy to compress hydrogen to these levels. Fuel cells are expensive to manufacture. The fuel cell uses the hydrogen to generate electricity that charges a battery. The electricity that is stored in the battery is used by an electric motor to propel the vehicle. A fuel cell vehicle is an electric vehicle. It's the hydrogen oxygen chemical reaction in the fuel cell that generates the electricity. Why not just skip all the hydrogen stuff, and just put a large battery in the car. It's more efficient than using hydrogen and cheaper to purchase.
Comment
5 of 5
November 7, 2011
Jeff: What you have said about hydrogen is "old stuff". For electrolysis, we use solar energy which is free except for the
PV conversion. As far as compression of hydrogen, we have electrolysis equipment that generates hydrogen at 10,000 psi without compressors. Also, the new light weight carbon fiber tanks will withstand 20,000 psi and has been approved by both the U.S. and European Safety agencies. Auto crash tests with the fiber tanks show no damage wheareas the gasoline tanks have been ruptured and fires occur. Not so with carbon fiber hydrogen tanks. It just rises up and is diluted in the atmosphere.


Batteries are expensive and require replacing every 5 years.
Fuel cells last 20 years and can be used to power electric motors at the wheels of the auto.
Dr. Reynolds
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