Discover and read the best of Twitter Threads about #sequestration

Most recents (6)


"Among #sequestration methods, CO2Β #injection into oceans is of great primacy due to the oceans’ large sequestration ability. However, there are concerns about the changes in H2O pH as CO2Β is injected into oceans."

On this point new study is conducted, detailsπŸ§΅β¬‡οΈ ImageImage
🌊 Researchers "experimentally measure the pH and solubility at #pressures up to 400 atm, #temperatures between 283 and 298 K, and different aqueous solutions in a high-pressure #autoclave reactor."
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🌊The results of this research "indicated that increasing pressure increases the #solubility of CO2 in aqueous solutions, resulting in lower pH values. In contrast, increasing #salinity and #temperature lowers the solubility and, as a result, increases the system's pH."
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Read 10 tweets
πŸš¨π‘π„π•πˆπ„π– ππ€ππ„π‘πŸš¨

"The recent review article discusses the basic operation of the marine #CarbonCycle & 2 #mCDR methods that are "thought to offer the greatest potential in terms of #CDR mass:

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Various conclusions were drawn in the review which are enlisted below:

1️⃣ "The alkalinity of the ocean creates a massive increase in the ocean’s capacity to #store #carbon, relative to a scenario without #OceanAlkalinity."
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2️⃣ "Ocean warming causes decreases in both #CO2 #solubility and the Revelle factor (B), which make the ocean less efficient at #absorbing CO2."
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Read 14 tweets
πŸš¨πŸ§Ύππ„π– π‘π„ππŽπ‘π“πŸ§ΎπŸš¨
The Climate Change Authority of #Australia has issued a report that pinpoints #CarbonSequestration as critical to reduce emissions.

"Storing C away from the atm is integral, both to avert #GHGs from entering the atm & to #remove them from it."
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The report notes that "while conventional #CarbonAccounting is simple and economically flexible, it does not consider crucial differences between different sources and sinks of #GHG #emissions." As a result, 𝐈𝐭 𝐩𝐫𝐨𝐩𝐨𝐬𝐞𝐬 𝐭𝐑𝐞 𝐟𝐨π₯π₯𝐨𝐰𝐒𝐧𝐠 𝐚𝐜𝐭𝐒𝐨𝐧𝐬: ⬇️
1️⃣ "The Government should prioritise the development of long-lived geological and mineral #storage technologies.

2️⃣ Measures to restore CO2 released from #CarbonSinks should be reviewed and enhanced as appropriate."
Read 11 tweets
🚨Paper Alert🚨

Marine protected areas #MPAs are increasingly promoted as #ocean-based #solution to #ClimateChange, but their contribution to climate change #adaptation and #mitigation remains contentious. Our meta-analysis of 22,403 papers brings clarity. Link below.

πŸ™ˆSpoiler alertπŸ™‰

#FullyProtected #MPAs can can significantly enhance:

©️ carbon sequestration
🌊 coastal protection
🐟 biodiversity
🐑 reproductive capacity of marine organisms
🎣 fishers’ catch
πŸ’° fishers’ income

We identified the potential β€œclimate pathways” through which #MPAs could contribute to #ClimateChange #mitigation and #adaptation. First along mitigation and adaptation dimensions, and then distinguishing among #ecological and #social dimensions of adaptation.

Read 17 tweets
THREAD: What happens to #carbon once it's sequestered in soils? How can we lock it in & ensure it doesn't return to the atmosphere as CO2?

Soil scientists use "fractionation" methods for that^. Fractionation tells us about different pools of C-some stay forever & some are quick
Consider it like food for the body.

Some of the energy in your food will get used to build your bones-it stays there & is permanent. Some of the energy gets digested & respired as CO2 when you breathe. Not permanent, but you still need it. & some is intermediate-stored as fat.
In soils, we call the permanent fraction MAOM (minerally associated organic matter). This is the soil C that gets stuck to minerals & stays forever.

The faster fraction is called POM (particulate organic matter). This pool is a lot more dynamic…
Read 8 tweets
Today’s the day! Join our chief scientist @j_zelikova, as well as @SenWhitehouse, @RepPaulTonko to *get the dirt* on what’s happening in the future of soil carbon storage.
Fantastic remarks from @RepPaulTonko and @SenWhitehouse on the need for negative emissions technologies to meet climate goals, and the critical role agricultural soils play in achieving this.
"For the farming community, this [soil carbon storage] could be a win-win-win situation." -- @RepPaulTonko
Read 14 tweets

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