Environment & Energy
Related: About this forumStop the Parade! Should we be wasting our dwindling supply of helium on floating cartoon characters?
http://mobile.slate.com/articles/health_and_science/holidays/2012/11/macy_s_thanskgiving_day_parade_2012_helium_is_wasted_in_floating_parade.htmlThe sorry state of our helium reserves can be traced to three key factors. Thanks to a 1996 act of Congress, the price of helium is artificially low, so theres little deterrence for overuse. Theres also the fact that we have no idea how to artificially produce helium in any real, sustainable way. Finally, heliums unique properties make finding a viable substitute almost impossible.
The helium we use today is found in underground gas pockets, often associated with natural gas. Helium is abundant in the universe, but here on Earth it is more elusive; while theres a lot of helium in the atmosphere, it is very difficult to purify. Its really only when it is trapped underground that we can isolate it. This helium is largely formed as a by-product of decaying radioactive elements. The rate at which it is produced accounts for less than one-half of global demand, and most of it cannot be recovered efficiently.Producing helium artificially is possible in theory, but only through fission or nuclear fusion of two hydrogen atoms. Fission is impractical because enormous quantities of heavy metals like uranium and thorium would be necessary, and fusion won't work because of the high energies required to combine hydrogen atoms to form helium. Commercial fusion energy is the goal of much research around the globe but is very far from being a reality. (The New York Times recently questioned the DOEs investment in fusion research.) Even if fusion ever reliably produced more energy than is required to start the reaction, the industry would not take off for many decades, and the amount of helium produced would be marginal.Of course, there are those that think the helium panic is overblown. Some estimates claim the global supply of helium will last at least another 300 years. As helium becomes more scarce and expensive to purify, recycling will become more widespread, but recycling is possible for only certain applications.
The source of the helium we use now was discovered in 1903 in Dexter, Kan., when drillers happened upon gas that didnt burn. They were disappointed, but chemists eventually studied the gas and realized that natural gas deposits in the United States often contain helium in single-digit percentages. As it turned out, the Great Plains was hiding enormous amounts of helium, and the United States quickly became, and remains today, the worlds biggest supplier of helium. Many uses were found for the gasin particular, lighter-than-air travel. In 1925, the United States created the National Helium Reserve to ensure our dominance in the zeppelin wars that were sure to come. (The Hindenburg was filled with the very flammable hydrogen rather than helium because the United States controlled helium supplies and was loath to provide the gas to Germany.) In 1960, demand for helium increased, so Congress created incentives for natural gas producers to sell their helium to the helium reserve. This helium has been stored by the Bureau of Land Management in giant underground caverns in the Texas panhandle to this day.
rgbecker
(4,831 posts)Squinch
(50,950 posts)doc03
(35,340 posts)I know we produced oxygen, nitrogen and argon. I never worked at the oxygen plant but I just assumed they also produced helium. On checking I see helium is only a tiny fraction of a percent of air. I just thought it was in the air and you could just separate the gases and have all you need. I had read that before about the Hindenburg and wondered why the Germans didn't just build a plant to produce it. Learn something new every day.
Salviati
(6,008 posts)At the earth's temperature it all eventually escapes out into space, so any Helium that was once on Earth, or is produced in the Earth eventually leaves. Which is why it was first discovered in the spectrum of the sun, and only later on the Earth - hence Helium (Helios being Greek for the sun)
doc03
(35,340 posts)octoberlib
(14,971 posts)I'm sure Fox News will accuse liberals of waging a war on Thanksgiving. I can see the chyron now.
Demeter
(85,373 posts)If we need it badly enough, it will be manufactured.
lastlib
(23,238 posts)Fission is dangerous (think Fukushima/Three Mile Island), dirty, and very expensive, and the quantity of helium produced wouldn't be nearly sufficient to meet current, much less future, demand. Fusion isn't working yet to any viable degree, and cost in terms of energy consumed is astronomical. The dollar cost of what could be produced would make helium more valuable than gold.
Demeter
(85,373 posts)I said if we want it enough.
And there's a reasonable expectation that technology will advance to reduce the technical problems..
And being more valuable than gold is just the added incentive.