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Carbon-Neutral Hydrogen Breakthrough

We recently wrote about how hydrogen production is a costly endeavor for our water supply, as well as the electric gird, effectively making traditional methods of buy female viagra online without prescription manufacturing a near-impossibility. But Bruce E. Logan, professor of enivronmental engineering at Penn State, has developed a technique that could change that.
 
Logan suggests using microbial fuel cells that run on cellulose to produce the hydrogen from natural processes rather than converting it to ethanol. By using bacteria in a microbial cell with acetic acid (vinegar), electricity, about 0.3 volts worth, was produced. The bacteria consumed the acid, releasing electrons and canadian levitra protons, which were captured by a cathode and anode rig, which allowed for current. When they added 0.2 volts into the mix, hydrogen gas was produced. Admittedly the pill cheap viagra amounts produced were very small, but the efficiencies here are large and they are quick to point out that "this process produces 288 percent more energy in hydrogen than the electrical energy that is added to cialis in uk the process."
 
On top of that, they are seeing between 23-56% efficiency at extracting hydrogen from sugar-based crops, which, being that the technology is new, is impressive given that conventional hydrogen production methods are only at 70% efficiency, with little likelihood of increasing further. Logan is also developing systems to harness bacteria-produced electricity directly from animal wastewater and further using the byproducts to generate even more energy.
 

Given that the typical hydrogen economy has, until now, been based on massive consumption of (likely) dirty electricity, this new work may actually make hydrogen part of a larger sustainable future.

Image credit Zina Deretsky of the NSF.

Story Via Physorg

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Comments (11)Add Comment
0
Hydrogen's future
written by Lou Grinzo, November 26, 2007
Even though I would love to see hydrogen work as a mass market passenger car fuel, I don't think Logan's work, as impressive as it is, makes a difference.

I strongly recommend that anyone interested in hydrogen as a transportation fuel read some of buy discount viagra online the papers on the the best site viagra sale buy European Fuel Cell Forum site (http://www.efcf.com/reports/), especially the paper E21, "Does a Hydrogen Economy Make Sense?"

The basic point is that hydrogen just can't compete with electrons, thanks to all the energy that has to be expended in compressing, transporting, and dispensing the hydrogen, plus that lost when the hydrogen is used to low price cialis make electricity in a fuel cell and propel the vehicle.
0
Interesting race
written by Mark @ TalkClimateChange, November 26, 2007
The race for an energy storage solution for mass transport is starting to get interesting now. What will be really interesting is to see how the auto manufacturers start to play it since most of them are still very much married to last century's technology..

0
...
written by Albert, November 26, 2007
I agree with Lou on the inherent problems with hydrogen, and while the best online generic levitra markets can work that out it may not happen in a timely fashion if governments tilt the market in hydrogen's favor.

A more troubling issue for me is that any energy solution that uses plant material will end up driving more deforestation in order to plant energy crops.
0
...
written by Bob Wallace, November 26, 2007
Using hydrogen for transportation presents all sorts of problems, including the necessity to create a totally new storage, transportation, and distribution system.

Think building a new set of gas tankers and service stations. Everywhere.

We've already got the electric grid and electric cars are becoming more and how to buy viagra in canada more of a reality. If new batteries pan out to the best choice pfizer viagra canada give us decent range and quick recharge times there's no need to go to the massive expense of installing hydrogen.

But we could utilize this technology to turn waste into electricity. Inexpensive, non-CO2 producing electricity.

And that would be a good thing.
0
Hydrogen storage and transportation
written by Dave, November 26, 2007
Wouldn't the fuel cell be IN the vehicle? No need to store, compress or transport hydrogen if it is being generated where it is going to be used. Also, this fuel cell uses plant waste, so we might not have to plant much in the way of fuel crops. Just use the leftovers from other crops or the clippings from your lawn.
0
Is this really neutral ?
written by Mike, November 27, 2007
I notice in the diagram that CO2! is released so how can this be carbon neutral?
0
re: mike
written by Herno, November 27, 2007
because it comes from de cellulose from the www.y-e-n.net plant, that came first from co2 in the air, so the cycle is complete.
0
...
written by DKelly, January 02, 2008
Logan's Microbial Electrolysis Cell is essentially a fuel cell running in reverse, producing hydrogen by introducing a voltage potential across an ion exchange membrane. PEM fuel cells produce electricity by consuming hydrogen and oxygen to produce water as the byproduct. Getting the hydrogen efficiently is the problem. Volume per volume you can produce more hydrogen from reforming (catalytically breaking down) a methanol/water mixture than from storing compressed or liquid hydrogen. The byproducts are small amounts of www.omroepgroesbeek.nl CO and CO2 and waste heat, but the efficiencies approach 80% at converting the methanol/water to woman and cialis hydrogen (lower heating value of the methanol in versus the lower heating value of the hydrogen out). Onboard reforming is currently not practical for transportation but has incredible potential for combined household electrical production and heating.
0
I am convinced that Oxyhydrogen that cur
written by Fred Waymire, March 11, 2008
After reading all that I could find on hydrogen production, I believe that this simple electrolizer is just in it's infancy. My current belief is that it is possible to supply 80% of the internal combustion needs. I am currently working on how can i buy levitra in canada a design that will enhance the Oxyhydro production while overcoming the http://operacijatrijumf.net/viagra-pill largest obsticle, (overheating from the oxygen in the compression chamber. Causing possible severe damage to the piston and valves.)

I will be using two inline electrolizer chambers. One at 12 volt dc at pulsating intervals. The other utilizing the power from the coil. The system will be fully charged at 60 psi with the only outlet being tiny fog nozzles rated at .45 gph each. The charged water will be heated to near steam utilizing the excessive heat from the exhaust manifold. This fog will enter the intake air just near the carburator. The water steam vapor should provide the cooling needed for the combustion chamber. It will be a while before it is built and tested. I am eager to see how well this will work in conjunction with the standard vacuum assisted electrolizer technology that is simple, and cheap to build.
0
Hydrogen from sea water or tap water usi
written by Joel, June 22, 2008
Already I have seen on the net a man install a 10 KW solar system on his house coupled with an electrolyzer that separates the wffisher.com hydrogen and oxygen from water, and fills five 8 foot long white propane tanks in his backyard with the hydrogen to power appliances in his house and best levitra his car. Also he has several large batteries that store excess energy so his is completely selfsustaining and not tied into the power grid.
Using water whether it be fresh water or sea water is plentiful, and installing a solar system will become much cheaper soon with companies like Nanosolar producing solar panels much more cheaply at least 1/5th cost of todays solar panels.
How could this be bad ? I do not see any down side.
Usage of water as a fuel source must be better than any other model out there, we will not run out of water and today you can eliminate dirty electricity production with clean cheap solar energy.
0
Added note, Honda to good choice levitra 100 sell home built nat
written by Joel, June 22, 2008
Honda has plans to sell a natural gas conversion system to support sale of its new FCX,FCX Clarity and FCX Concept hydrogen cell cars since there is not enough hydrogen fueling stations yet to readily supply hydrogen to these cars in the US. Although I do not agree with use of natural gas as the source for the hydrogen, this is just an example that homeowners will be able to fuel their cars with home made hydrogen.
Going one step further and installing cheap solar cells from say Ascent or Nanosolar (say a 5 KW system or more) will more than amply supply the electricity coupled with an electrolyzer using water as the reagent needed to run such a hydrogen production system would be efficient, selfsustaining and environmentally friendly. Initial cost to purchase both an electrolyzer and solar panels will be recouperated within a few years considering going cost of industrially made hydrogen at fueling station are said to be about $5/US gallon for hydrogen, plus the added savings of www.sinai.org.il grid tie-in for the solar panels (hydrogen compared regular octane fuel on a liquid gallon basis)
I do not see a downside to this unless a person is not able to invest into such a system. My figures are the system will cost within the $20-30K US range for such a system. Also costs of the new hydrogen cell cars will be high for the consumer on initial purchase. I cannot speculate what it will cost for a Honda FCX Clarity, Chrylser Ecovoyager,GM Sequioa Hydrogen cell car or Ford Focus or Edge hydrogen cell/electric car but they are in the works right now and with competition and canada pharmacy cialis demand will be affordable for the common person within a few years after mass production and sale has started in the US.

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