Where is hydrogen produced or mined?
435767
most common way is not through elecrolysis, but extraction from fossil fuels:  Here is a list of the ways...notice in every case a large amount of energy is input-and in most cases this energy comes from coal burning  for electricity or oil...\nHydrogen can be produced using a variety of domestic energy resources - fossil fuels, such as coal and natural gas, with carbon capture and sequestration; renewables, such as biomass, and renewable energy technologies, including solar, wind, geothermal, and hydropower; and nuclear power. Specific technologies and processes are described below.\n\nThermochemical Processes\nSteam methane reforming: In this process, high-temperature steam is used to extract hydrogen from a methane source such as natural gas. This is the most common method of producing hydrogen; about 95 percent of the hydrogen we use today in the United States is produced using this process. \nPartial oxidation: Scientists are exploring a process that produces hydrogen by simultaneously separating oxygen from air and partially oxidizing methane. \nOther thermal processes: Other processes include (1) splitting water using heat from a solar concentrator, and (2) gasifying or burning biomass (i.e., biological material, such as plants or agricultural waste) to generate a bio-oil or gas, which is then reformed to produce hydrogen. \nElectrolytic Processes\nElectrolysis: In electrolysis, electricity is used to separate water (H2O) into hydrogen and oxygen. Current electrolysis systems are very energy intensive. The challenge is to develop low cost and more energy efficient electrolysis technologies. \nPhotolytic Processes\nPhotolytic methods: In photolysis, sunlight is used to split water. Two photolytic processes are being explored: (1) photobiological methods, in which microbes, when exposed to sunlight, split water to produce hydrogen, and (2) photoelectrolysis, in which semi-conductors, when exposed to sunlight and submersed in water, generate enough electricity to produce hydrogen by splitting the water.
450545
I doubt it. Even if the storage problems were overcome, there are next to no places with which one could fuel up a hydrogen car. Until the infrastructure is there, there is little reason for manufacturers to put out vehicles.
29987
It's an ozone depleter, and it is extremely volitile.  If you've ever heard of the Hindenberg explosion (36 people dies) that was because the Zeplin was filled with hydrogen gas.\n\nManufacture of hydrogen will result in CO2 emmission even though the use of hydrgoen does not.  That's because hydrogen gas is usually made from methane or other fossils fuels.  Theoretically, it can also be made from the electrolysis of water, but this requires a lot of electricity, and very little of the electricity available comes from sources other than fossil fuels.\n\nAsk any engineer or chemist, and they'll tell you: it's a scam.
1081994
No, this is not true.  Nevertheless, there is germ of truth in your question.\n\nSome shales contain sulfide minerals, most notably, iron sulfide or pyrite, which has the chemical formula FeS2.  When pyrite is exposed to the oxygen in air and water, a sequence of reactions ensue that generate acidity.  This process is gives rise to what is often refered to as "acid mine drainage.\n\nIn case you are interested, the reactions involved are:\n\nreaction 1: 2 FeS2 + 7 02 + 2 H2O -> 2 Fe2+ + 4 SO4 + 4 H+\n\nreaction 2: 4 Fe 2+ + O2 + 4 H+ -> 4 Fe3+ + 2 H2O\n\nreaction 3: 4 Fe3+ + 12 H2O -> 4 Fe(OH)3 + 12 H+ \n\nreaction 4: FeS2 + 14 Fe3+ + 8 H2O -> 15 Fe2+ +2 SO42- + 16 H+\n\nReactions 1, 3, and 4 all generate H+ ions, which are what "cause" a solution to be acid.  Reaction 4, in particular, generates *lots* of hydrogen ions, and thus has the potential to make very acidic solutions. Reaction 2 is the "slow" step in this process, but it is often catalyzed by bacteria that use this reaction as an energy source.
473126
Hydrogen. You can create it from water using only electricity so it's the cheapest fuel ever. When you explode it (during combustion), it mixes with oxygen to create...you guessed it...water (no polution).\n\nSo:\n1.Free\n2.No polutants\n\nHmmm...
970781
Potential of Hydrogen.
867403
The sun is made of hydrogen.
499679
Uranium, like all other heavier-than-iron elements, are created in the hearts of stars as they go supernova.  About ten billion years ago, a first generation supergiant star went supernova somewhere around here.  It seeded space with all of the elements other than hydrogen that were later swept up by gravity to form our own Star and Earth and the other planets of our solar system, as well as nearby stars like the Alpha Centauri system and Sirius.  (Hydrogen was made in the Big Bang.)\n\nOn Earth, uranium is generally found in isotopes U-235 and U-238 and to a lesser degree U-234.  It is highly prevalent, being found in most rock, although it was originally identified chemically as an extract of pitchblende.  It is most concentrated in uranium ore (.05-20% or 1-4 lbs of uranium oxide per ton of uranium ore, so that is the substance we mine for when we want uranium.\n\nUranium ore is present in most parts of the world, but the largest reserves are in Australia.  There's an excellent map at http://www.wise-uranium.org/umaps.html.  Select "Cumulative Uranium Production to 2004" and the various Uranium Resources options, which shows you the availability of uranium in terms of more or less concentrated uranium ore.
238661
Titanium is extracted from ilmenite (FeTiO3) and rutile (TiO2). Brazil, India, and Canada are major producers. Both these ore minerals are found either in rock formations or concentrated in heavy mineral sands.
844643
Stillwater in Montana USA\nhttp://www.mining-technology.com/projects/stillwater/
237029
Several.\n\nGeo-thermal is one of the best.  Basically, this is power derived from the heat of the earth.  Unfortunately, there are few places where this can be used.  Iceland, is a prime location for geothermal energy and they use it most effectively.\n\nWind Power:  quickly gaining in popularity, these are windmill powered turbines.\n\nSolar Power:  The sun is an excellent source of power.  Unfortunately, solar cells have been typically expensive to produce.  \n\nFuel Cells.  President Bush's pet project is to store hydrogen and use that as fuel.  Unfortunately there are some problems not mentioned by the president.  Hydrogen is the simplest element (smallest atom).  This makes it extremely easy to escape whatever container we put it in.  If you fill your cars fuel cell and let it sit for a couple of weeks, you will have an empty cell.  You need a lot of hydrogen to provide power.   You might need a bigger fuel cell than what is commonly suggested.  You might need a hydrogen tank the size of a car in order to go the distance usually provided in a sterotypical gas tank.  Benefits:  hydrogen is common and burns clean.\n\nNuclear power.  The big boogieman power source.  The sad truth is, we will have to expand nuclear power to keep up with demand if we reduce our fossil fuel consumption.  It's a necessary evil.\n\nTidal power:  Using wave action to provide power along coastal regions.  There are several of these types of power plants.\n\nHydroelectric:  using falling water from waterfalls, dams for fast moving rivers to power turbines.  One  of the best loved methods of producing "clean" power.  Drawbacks include altering the environmet and seriously affecting fish spawning.  Salmon populations have dropped enormously.
686527
There are many ways to generate hydrogen outside electrolysis. Steam reforming, methane reforming, propane reforming, etc... Coastal countries may appear to have an advantage but you cannot have a fair comparison of supply and demand.  Consider the following:\n1. Many, many, many countries have access to coastal water, thus competition would be extremely fierce\n2. Countries will be more than self-sufficient and may "sell" excess product at a very low cost.\n3. Rivers, streams, rainwater etc... is available to more countries in the world than petroleum to many. \n \nI would not worry about it, depleting the sea is way way way way off, and besides, using H2 as fuel means that emission is....water. And no, the roads are not going to be slippery from algae (sorry, but I have heard a statement like that in the past)\n\nEver considered that we may come up with the technology to recover and re-use the water emission? Thus less filling up at your local Shell H2 station? \n\nI hope I was able to answer it for you in a objective manner
1167923
water is generated by combining Hydrogen and Oxygen in a retort and applying eletrical spark.\nCoolant and pharmaceuticals labs
401900
you would have to find the hydrogen somewhere.
360560
Good thought. But dear i want to tell you the secrete of this process, the water is found by combining One Atom of Oxygen with two atoms of Hydrogen at a critical heat of formation that existed only at the formation of Earth and it is not possible to create the same Heat of formation to form Water at the Normal working conditions.
1025413
Many organizations all chasing a pipe dream for the present for the sake of political correctness. They are developing vehicles which will have no pratical source of fuel or an infrastructure to store and deliver it. The only practical source of hydrogen is electrolosis which consume electric power. Given the existing emisions profile of US generating plants, producing the hydrogen will emit more pollutants than are saved with hydrogen fueld cars. How will we store and deliver it? The cart is being put before the horse!
697479
Mostly hydrogen. There is a little bit of helium and heavier elements in there as well.