allanwcoty
Well-known member
Starting to study and search for information about Gallium. Just wondering if anybody is recovering it and if anyone has any for sale? Have a Happy Thanksgiving. allan
As far as recycling goes, it's very easy to do--gallium dissolves nicely into base.
4metals said:With aluminum having an atomic wt of a shade under 27 that means a pound of the aluminum gallium will release something in the neighborhood of 0.055 pounds of hydrogen.
It would be interesting to know how much hydrogen is required to run a 1 hp motor, then we could figure out some relative fuel efficiency and see how a pound of aluminum relates to a gallon of gasoline. How many miles per pound!
I roll my eyes when I hear talk of putting liquid hydrogen fueling centers for a hydrogen economy. People can barely handle gasoline safely; how could they hope to use a cryogenic liquid which is much more flammable?
Lou said:Crude analysis--you forget the efficiency of a gasoline engine versus that of a fuel cell, and further the HIGH efficiency of an electric motor with say, regenerative braking. Crunching those numbers ought not to be so simple.
"Most people don't realize how energy intensive aluminum is," Woodall said. "For every pound of aluminum you get more than two kilowatt hours of energy in the form of hydrogen combustion and more than two kilowatt hours of heat from the reaction of aluminum with water. A midsize car with a full tank of aluminum-gallium pellets, which amounts to about 350 pounds of aluminum, could take a 350-mile trip and it would cost $60, assuming the alumina is converted back to aluminum on-site at a nuclear power plant.
"How does this compare with conventional technology? Well, if I put gasoline in a tank, I get six kilowatt hours per pound, or about two and a half times the energy than I get for a pound of aluminum. So I need about two and a half times the weight of aluminum to get the same energy output, but I eliminate gasoline entirely, and I am using a resource that is cheap and abundant in the United States. If only the energy of the generated hydrogen is used, then the aluminum-gallium alloy would require about the same space as a tank of gasoline, so no extra room would be needed, and the added weight would be the equivalent of an extra passenger, albeit a pretty large extra passenger."
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