this post was submitted on 07 Jun 2024
152 points (96.9% liked)

Technology

59152 readers
2007 users here now

This is a most excellent place for technology news and articles.

Our Rules

  1. Follow the lemmy.world rules.
  2. Only tech related content.
  3. Be excellent to each another!
  4. Mod approved content bots can post up to 10 articles per day.
  5. Threads asking for personal tech support may be deleted.
  6. Politics threads may be removed.
  7. No memes allowed as posts, OK to post as comments.
  8. Only approved bots from the list below, to ask if your bot can be added please contact us.
  9. Check for duplicates before posting, duplicates may be removed

Approved Bots

founded 1 year ago
MODERATORS
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
152
How Much Energy Would It Take to Pull Carbon Dioxide out of the Air? (www.wired.com)
submitted 5 months ago by [email protected] to c/[email protected]
72 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 6 points 5 months ago (2 children)

In order for that we need more renewable energy, otherwise we're just burning fossil fuel, producing carbon dioxide, and then capturing it. Solar, wind, algae biofuel, renewable diesel, green hydrogen, etc. We have to be careful how we use energy otherwise we're just producing carbon dioxide to capture carbon dioxide.

[–] [email protected] 6 points 5 months ago (1 children)

People keep complaining that solar and wind give us “too much electricity at the wrong time”, causing power prices to go negative (as if this is a problem). Having a beneficial process like co2 removal that you can do at any time of day (the co2 isn’t going anywhere) that would soak up all that energy seems like a win win.

[–] [email protected] 2 points 5 months ago (1 children)

Yea, and one of the best ways to sequester carbon dioxide is by using algae. Algae biofuels are a great way out of the climate crisis. Use excess energy to produce algae biofuel, net negative emissions.

[–] [email protected] 1 points 5 months ago (1 children)

But if it's used as fuel, wouldn't that typically return the CO~2~? Just about all fuels are burned, which creates the CO~2~, and you have to make sure the energy you use to make and transport the fuel is clean, too.

[–] [email protected] 1 points 5 months ago (1 children)

Yes, but overall it would be net negative carbon dioxide emissions.

[–] [email protected] 1 points 5 months ago

How does it stay net negative? Carbon goes into the fuel, which is good, but doesn't like all of it come back out when burned for fuel? My understanding is that these fuels can only really achieve neutrality, and that assumes clean energy used to make the fuel.

[–] [email protected] 4 points 5 months ago (2 children)

Looks at US corn production for ethanol 👀