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Ocean Carbon Removal: Captura's marine carbon capture explained

spectrum.ieee.org

11–20 of 78 posts

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#11
In my sci-fi addled mind, and massive ship would trundle over the worlds oceans extracting readily available uranium and CO2 to make synthetic fuels for all time from nuclear energy.

This skips a lot of important steps that likely cannot fit on one ship, but I love the idea of it.

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#12
post #6

I feel like it is missing most of the important questions. What's the impact on sea life (one sentence saying we need monitoring...) The techniques used mean that all the microorganisms, planktons, algaes will be destroyed by those processes. What is the yield of those approaches, you remove 1000 tons, but how much do you produce to make the devices, maintain and run them, the boats... What do you do with the CO2, th…

Yeah this is seems like it's reduced the complexity down to one dimension (removing the CO2) and has blown past any of that, didn't even think about the algae initially, just energy expenditures getting this up and running, but yeah, that's pretty much saying you'll solve climate change by chopping down trees and planting golf course grass

They’re not even removing that much CO2 either

> Captura’s Port of Los Angeles pilot can remove about 100 tonnes of CO2 per year from seawater. The company’s new plant under construction in Hawaii will capture 10 times that amount—a measurement the company can definitively quantify.

So 1,000 tonnes of CO2 / year?

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#13
post #10
post #7

What could go wrong? Something must be done, that is for sure, and this approach targets the main carbon capture engine of the planet. But at the scale it must reach to do something significant it will probably (surely?) cause unintended consequences. It's like the butterfly effect applied to complex systems, if you do something big enough for causing a change it will probably affect a lot of things, most that will b…

I've had this idea for a short story for a while, where humans try to do carbon capture and end up going too far, leading to a snow ball.

Haven't seen Snowpiercer yet I take it?

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#14
It seems like they will do anything except the obvious because that would affect the economy. Why harm one business by forcing them to reduce emissions and profits when you can have two profitable companies where one pollutes and the other cancels that out (ideally...)?

There has to be some other, unannounced benefit to funding these things like contributing research insights to naval warfare problems.

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#15
post #6

I feel like it is missing most of the important questions. What's the impact on sea life (one sentence saying we need monitoring...) The techniques used mean that all the microorganisms, planktons, algaes will be destroyed by those processes. What is the yield of those approaches, you remove 1000 tons, but how much do you produce to make the devices, maintain and run them, the boats... What do you do with the CO2, th…

Yeah this is seems like it's reduced the complexity down to one dimension (removing the CO2) and has blown past any of that, didn't even think about the algae initially, just energy expenditures getting this up and running, but yeah, that's pretty much saying you'll solve climate change by chopping down trees and planting golf course grass

Oh no, the algae, nobody thought of them!

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#16
post #10
post #7

What could go wrong? Something must be done, that is for sure, and this approach targets the main carbon capture engine of the planet. But at the scale it must reach to do something significant it will probably (surely?) cause unintended consequences. It's like the butterfly effect applied to complex systems, if you do something big enough for causing a change it will probably affect a lot of things, most that will b…

I've had this idea for a short story for a while, where humans try to do carbon capture and end up going too far, leading to a snow ball.

I wrote a short story the other day about making the carbon problem obvious to every human on earth[1]. I’d love to read yours when you finish it. We need more fiction that focuses on this along with the nonfiction imo.

[1] https://jck.earth/2024/12/20/heaven-scent.html

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#17

In my sci-fi addled mind, and massive ship would trundle over the worlds oceans extracting readily available uranium and CO2 to make synthetic fuels for all time from nuclear energy. This skips a lot of important steps that likely cannot fit on one ship, but I love the idea of it.

The oceans are big, so why limit it to one ship. Have a fleet of ships where each ship serves different purposes. Navies have been doing this for most of naval history.

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#18
post #15

Earlier quoted context omitted.

Yeah this is seems like it's reduced the complexity down to one dimension (removing the CO2) and has blown past any of that, didn't even think about the algae initially, just energy expenditures getting this up and running, but yeah, that's pretty much saying you'll solve climate change by chopping down trees and planting golf course grass

Oh no, the algae, nobody thought of them!

We like them for breathing purposes. They produce about 70% of the oxygen.

Re: Ocean Carbon Removal: Captura's marine carbon capture explained

#20

It seems like they will do anything except the obvious because that would affect the economy. Why harm one business by forcing them to reduce emissions and profits when you can have two profitable companies where one pollutes and the other cancels that out (ideally...)? There has to be some other, unannounced benefit to funding these things like contributing research insights to naval warfare problems.

By having a second company, it becomes an expense of the polluting company. Now the MBA’s can put a cost savings into their decision model to reduce their emissions. If their CO2 cost is X and the upgrade costs are Y they can optimize, calculate paybacks, determine ROI. For some companies the calculus comes out the outsourcing CO2 capture is the best solution.
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