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What happens to the carbon after the hydrogen is separated? Could this be a useful form of carbon capture for fossil fuels? Hydrogen at least burns much more
by wffurr 5y ago
What happens to the carbon after the hydrogen is separated?
Could this be a useful form of carbon capture for fossil fuels? Hydrogen at least burns much more cleanly at the point of use.
- twic 5y agoIt gets thrown in the bin. That is, if you've made the hydrogen by pyrolysing natural gas, using a process which separates the carbon as a solid: https://spectra.mhi.com/achieving-net-zero-what-is-turquoise-hydrogen https://spectra.mhi.com/achieving-net-zero-what-is-turquoise... You might even be able to sell some of it, although i suspect there isn't a market for all the carbon you would produce.
- nine_k 5y agoSteel production needs more or less pure carbon, and lots of it.
- eurasiantiger 5y agoPaint producers would like to talk with you—carbon black is one of the basic pigments.
- ZeroGravitas 5y agoThere's a company looking into this turquoise hydrogen that said the method has previously been optimised for multiple outputs to make the most money, but if it works at the scale we need it to for decarbonisation, we'll be overrun with carbon as a byproduct, so it would be unwise to assume you could sell all of it for the price that you currently can get, as you'd completely swamp the market, that's why they focus on making the economics work for just the hydrogen alone and consider anything else a bonus. I'm sure someone will come up with something more interesting to do with it than just dumping it though if it all works out.
- wffurr 5y agoThat’s neat, but the most common method, steam reforming, produces CO2 gas as the byproduct. Much more difficult to store.