Yeah, something about this screams at me it's not right.
Why wouldn't this work? What would go wrong?
this post was submitted on 11 Jun 2024
1 points (100.0% liked)
Technology
59651 readers
2643 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
Producing hydrogen from natural gas still releases carbon in to the air.
...which is the whole reason for doing the SMR within the natural reservoir and leaving the CO~2~ in there.
We could just give up on the idea that natural gas is “clean.•
That used to be my thinking, but there's a lot of natural gas ready to be exploited and we need hydrogen. Therefore, methods like the one described in the article as well as ex situ methane pyrolysis are worth investigating.
I'm no expert, but this doesn't sound like a good idea.
The alternatives are the status quo or severely restricting natural gas extraction. I won't say the latter isn't doable, especially if we can ramp up nuclear power capacity, but there's a lot of baggage there. We should welcome a solution that effectively makes natural gas an emissions-free resource.
I wouldn't call carbon monoxide a good side product. If the amount created is negligible then great, but are there realistic figures?
Also, its probably safe to assume the producers will lie about how much they're allowing to leak into the air.
I don't understand what you mean. As described in the article, the process leaves the CO trapped in the ground.
Yes, the article says that but I'm not sure how much I believe it. If there's a decent body of work that draws consensus I would be less sceptical.
Not sure what direction to point you in. Gas storage in geological formations has been successfully practiced in the helium and natural gas industries for a while. Subterranean storage of carbon dioxide has also been successfully demonstrated. Apparently, there's a big gas field being used for this purpose off the coast of Norway since 1996.
Keeping in mind I have zero knowledge of what you're telling me about, but these examples don't include anything about carbon monoxide.
If the similarities to the other gases are close enough to mean that it can be safely stored using the same techniques, then I'm inclined to feel a lot less worried about the whole thing.
But I don't really trust these sectors to act on our behalf, only to make profit line go up. Lying and bribing appears to be part of that, as can be seen all around us these days.
load more comments
(3 replies)
I won't say the latter isn't doable, especially if we can ramp up nuclear power capacity
We could do both and hedge our bets.
First of all, they spelled Heelys wrong. Second, Heelys are a great idea, even better as an adult in an office with polished concrete floors
What could possibly go wrong?
This worst case scenario is probably the same as with any reservoir of natural gas (a massive leak and explosion), which is all the more reason to convert it to hydrogen and sequester the weaker, non-flammable GHG byproduct in situ.
I imagine that suddenly all the co2 stored as gas underground could suddenly come out and being odorless, kills the whole neighboring town
Natural gas is also odorless and able to displace oxygen so I don’t see how it being CO2 underground instead of natural gas changes anything from a risk perspective. Maybe because the molecules are smaller and thus more prone to leaks? I’m admittedly way out of my depth here.
Methane is lighter than air and goes up while co2 is heavier than oxygen and stays down. I don’t know maybe in case of some disaster where water leaks in the well and then pushes out the co2
I wouldn’t want to live nearby in both cases anyway
I mean, all that methane coming out would probably be at least as bad, and the cavity had previously been filled with methane.
It'll be a cavern deep under a lot of rock. If it can contain methane for zillions of years, I imagine that it can contain carbon dioxide.
I'd be worried about the now excess co2 levels disrupting the normal saturation levels in the groundwater.
Sparkling water, on tap!
It's what plants crave I guess.
We're about to make Fracking look like a great idea 😂
Fuck hydrogen. Its a fake green product so oil companies can transition as slow as they want while still keeping their strangle hold on our society.
I disagree. We need hydrogen for GHG-free fertilizer and steel production and it's the superior choice for powering vehicles. Regardless, this research is interesting because it could help solve the natural gas problem.
Hydrogen from gas fields is anything but GHG-free!
That's why processes that capture or avoid the GHG component of hydrogen production are worth investigating.
Ok, but what about the ecosystems dependent on that chemical energy staying underground?
Are you implying that there are subterranean ecosystems somehow dependent on natural gas deposits that are harmed by the exploitation of these resources?
These ecosystems are well studied.
This isn’t controversial in the slightest. We are destroying unique ecosystems with every barrel we extract.
That's fascinating. Thank you for sharing. I guess these specific bacterial ecosystems would suffer, so to speak. Perhaps there should be rules to prevent oil and gas deposits from being completely depleted, or some could be set aside as nature preserves.
Massive green hydrogen plants running on renewables now being built in Australia but hey keep being part of the problem instead of the solution.
It depends a lot on where the hydrogen is sourced from. Hydrogen that is generated from electrolyzers using renewable power is completely green (and funny enough, called Green Hydrogen), and is a good way to store excess energy from solar and wind.
Oil companies however want to market hydrogen from drilling and refining, which is dirty as hell.
It's an important differentiation to make though. Hydrogen is not inherently bad and will have plenty of green applications. We just have to make sure it's coming from the right places.
and is a good way to store excess energy from solar and wind.
Is it really that good of a storage method, though? The round-trip efficiency is quite bad when compared to other methods of storage.
We'll need it anyway to produce existing chemical materials sustainably. It may not be the best energy carrier nor most efficient, but it shines in specific applications. Vehicles are a promising example.
"That good of a storage method" in terms of what, arbitrage? We should be producing hydrogen for the practical and environmental benefits of having emissions-free vehicle fuel (that avoids the problems of battery production and disposal), steel, and fertilizer.
I don't see any good reason why the merits of hydrogen for vehicle fuel would be any better than production and disposal of batteries. The other cases I agree that hydrogen will have a useful niche.
Sadly almost all hydrogen currently making its way to market is dirty. I have high hopes for it in the future but it seems like thinly veiled poison at the moment.
And this article is definitely about the dirty kind or at least feels like it is.
There's companies working on it! ~~We're just broke~~
And yes, this is definitely the dirty kind. It may still be an improvement on using natural gas directly, but there would need to be a fairly comprehensive analysis to tell for sure. One possible advantage though is we could start building up a hydrogen infrastructure that we can then feed green hydrogen into and completely replace the dirty hydrogen.
Anyway though, you're right to be skeptical. It's important though to look into the details to determine if it's legitimately green energy or if it's just oil companies greenwashing. We need to shun the latter while we promote the former.
(There is a grey area, and it's the same as electric cars -- if we're using electricity from the grid to power cars, and electrolyzers which make hydrogen, is it truly green? I would say this is acceptable for the same reason EVs are acceptable. It'll become completely emission free once the grid is run on renewables.)
Wait. Am I getting this right? They want to inject high-pressure steam and chemicals into a massive underground natural gas reservoir. Then set off a big fire + explosion.
Surely, nothing can go wrong.
It's called in situ combustion and apparently it's a well established practice in the petroleum industry: https://glossary.slb.com/en/terms/i/in-situ_combustion
Yes because igniting fires underground is a GREAT idea!
Centralia,PA would like a word...
This how you realize that there are people around that just want to blow shit up.
view more: next ›