just science related topics. please contribute
note: clickbait sources/headlines aren't liked generally. I've posted crap sources and later deleted or edit to improve after complaints. whoops, sry
Rule 1) Be kind.
lemmy.world rules: https://mastodon.world/about
I don't screen everything, lrn2scroll
I wonder if they can use CO2 that comes from industrial carbon capture, or if it needs to be something purer that takes a lot of energy to produce.
Also, I'm not sure if we can get industrial volumes of hydrogen from sources other than fossil fuels now. Its been a while, but last I checked it was coming from things like byproducts from reformers.
It would need to be food grade CO2. So breweries would be a good source.
Yo this would be great for some actual proper carbon sequestration. Make some butter from the air and pump it back down into the wells.
It's like a very limited Star Trek replicator. It can make anything you want as long as it's butter.
How does the cost per co2 captured compare to planting more trees? Or is this just another VC scam?
If CO2 is a byproduct of another process, then I'd make a guess it is fairly cheap. The flaw here is that CO2 and H2 are both products of steam reforming using methane... Which is to say, the cheaper version might just come from using natural gas. Hydrogen has to be sourced from some energy consuming process, and that too is often from the methane steam reformation. So it's certainly possible, but yet again is ready to become yet another "green" product made from fossil fuel. Doesn't have to be, but I can be.
Edit: to correct a discrepancy, the article mentioned hydrogen, but if the hydrgon comes from water used in the process then some of the issues of providing H2 is less big. But either way I expect this to be energy costly. Nevertheless, a lab made product is still something that doesn't need large areas of land to produce.
So this new carbon sequestering program is going to be kind of a good news / bad news thing. ..
There are ≈950 gigatons of excess CO2 in the atmosphere 27% of that by weight is carbon, the us population is 333milion, so if every American eats 770lbs of carbon sequestered butter we will solve climate change.
Of course the danger is that this is cancelled out by increased carbon emissions from a making a commensurate amount of toast.