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@geoengineering1

May 2

🚨🆕STUDY🚨
"The study explored the wide range in #CDR deployment volumes across 1.5°C compatible & high overshoot pathways by evaluating the links btw CDR & conceptually linked scenario aspects, via focus on CDR in 2050 & scenario properties related to reaching #NetZero CO2."
🧵

"#CDR volumes
were further evaluated in terms of their relative and absolute contribution to total mitigation up until reaching
net-zero CO2, showing considerable variation across scenarios with a median relative contribution of around 20%."
2/7

"The volumes of #CDR in 2050 and 2100 and the cumulative amount throughout the 21st century were most strongly correlated to the degree to which CO2 emissions are reduced as a means of reaching net-zero CO2."
3/7

Read 8 tweets

Geoengineering Info

@geoengineering1

Apr 30

📝💡 𝐖𝐞𝐞𝐤𝐥𝐲 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝
Here's is your roundup of top #CarbonDioxideRemoval News Articles / Scientific Papers from the past week: 🌱🪨🎛️🌊

🧵
1/14

@CarbonGap

1️⃣ #CarbonRemoval Policy Tracker launched by @CarbonGap to explore Europe’s #CDR #DAC #BECCS policy landscape & pilots.🌱🎛️

➡️

https://twitter.com/CarbonGap/status/1650742351730548736?t=-xnjE_-sSfTMkF6E9B-wrA&s=19

2/14

@fionaharvey

2️⃣ ✍️ @fionaharvey's recent blog post explored the contentious issue related to #CarbonDioxideRemoval technologies.📰

➡️

https://twitter.com/hausfath/status/1650958139792162816?t=KgOHBE0qJsq_PbTEw2GPcg&s=19

3/14

Read 14 tweets

Geoengineering Info

@geoengineering1

Apr 30

@rosner_fabian

🚨𝐍𝐄𝐖 𝐏𝐀𝐏𝐄𝐑🚨

A lately published paper by @rosner_fabian, Schamberger & @hanna_breunig present "a novel #DirectAirCapture concept whereby cooling towers at #geothermal power plants are hybridized to capture CO2 at very #lowcost."

Details in a 🧵below⬇️
[1/6]

"The system design is elegant in its ability to overcome key technical challenges and highlights the potential for using existing infrastructure to lower #DirectAirCapture cost and land footprint, and secure utilities and public confidence."
2/6

"The techno-economic analysis suggests a cost-of-capture of $100 per metric tonne of CO2 is feasible, allowing #geothermal facilities to increase their net profit by $29 per metric tonne of CO2 captured — or $6 million per year — under the 45Q tax credit."
3/6

Read 6 tweets

Geoengineering Info

@geoengineering1

Apr 30

🚨NEW PAPER🚨

"The recent paper aims to highlight key operational challenges related to #CO2 #Injection in low-temp environments at various pressures."

So, a new approach is provided "to assess injectivity impairment phenomena, & their remediation at the lab scale."

🧵
1/11

"A novel core flooding-based testing apparatus was used to reckon permeability changes of porous core medium during injection of #CO2 across a range of saturations/T/P. This shows the effect on injectivity of
formation-damage mechanisms, including formation of CO2 hydrates."
2/11

"The new dynamic dual-phase injection test rig was designed, built, and used in this study to assess a range of conditions expected during #CO2 #injection either into deep saline aquifers or depleted oil and gas reservoirs."
3/11

Read 11 tweets

Geoengineering Info

@geoengineering1

Apr 29

🚨𝐑𝐄𝐕𝐈𝐄𝐖 𝐏𝐀𝐏𝐄𝐑🚨

"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:
🌊#OceanIronFertilization
&
🌊#OceanAlkalinityEnhancement."

🧵
1/14

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."
2/14

2️⃣ "Ocean warming causes decreases in both #CO2 #solubility and the Revelle factor (B), which make the ocean less efficient at #absorbing CO2."
3/14

Read 14 tweets

Geoengineering Info

@geoengineering1

Apr 29

🚨PAPER🚨

"Many scenario analyses suggest that #NegativeEmissionTechnologies, such as #bioenergy with carbon capture and storage & #afforestation, are required to achieve #NetZero target, but their large-scale deployment has a trade-off relationship with food security."
🧵
1/7

So, a new study considered an innovative #NET, "direct air carbon capture and storage (#DACCS), and analyzed its impact on global food access based on an indicator defined by food expenditure per GDP."
2/7

Study found that "the scenario considering DACCS mitigates the adverse impact on food access in regions such as Sub-Saharan Africa compared to the scenario not considering #DACCS by alleviating food expenditure increase & GDP loss associated with emission reduction efforts."
3/7

Read 7 tweets

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