Won't hydrogen cause a water crisis?

Question

Hydrogen becoming the new fossil-fuel and all, I have a feeling that the whole "your electric bill will cost less than a newspaper if everyone used solar hydrogen power" thing might become reality soon.

And I know hydrogen combustion creates water in the process, but we already have a water crisis on this Earth, why make it worse?

Am I mistaken? Or is biodiesel a much better solution to the fossil fuel situation?

Answer 1

Hydrogen does not "combust" in a fuel cell. It generates electricity and then recombines with oxygen to form water. I also have no idea what affect it would have on an electric bill being as how fuel cells are being created almost entirely for the automotive industry.

The problem with hydrogen is that to get it, you either have to take it as a byproduct of petroleum which is how we currently get it, or split it from water. Electrolysis of water takes an enormous amount of energy, more so than it takes to grow an equivalent amount of Bio diesel. So yes, we should be looking at bio diesel more than hydrogen, but not because hydrogen would cause a water crisis.

Answer 2

No, the hydrogen is not destroyed in combustion.

The " combustion " of hydrogen is just rapid oxidization of the hydrogen molecule ( oxygen recombining with the hydrogen to form water ) this means that no water would actually be lost in the process.