Geoengineering Info Profile picture
Apr 29 β€’ 7 tweets β€’ 6 min read Twitter logo Read on Twitter
🚨PAPER🚨

#DAC of CO2 from the atm. is being explored as a tech. that can contribute to the goal of reaching #NetZero CO2 emissions.

A new study led by @DonglongFu1 showed that the use of zeolitic materials are feasible for DAC when it is integrated with H2O harvesting.
🧡
1/7 Image
"A combination of a commercially available desiccant, AQSOA-Z02A, and a mordenite-type zeolite (MOR) enables
continuous operation of a designed #DAC system comprised of two
parallel units with a regeneration temperature of 100Β°C," research finds.
2/7 Image
Furthermore, "the system
using pure #zeolite alone requires regeneration at temperatures between 200Β°C and 300Β°C."
3/7 ImageImage
"Techno-economic analyses of 12 process
scenarios reveal that the energy requirement of the best scenario
investigated is 71 GJ/tCO2, while the conventional pure zeolitebased system requires 200 GJ/tCO2."
#DAC
4/7 Image
Research declared that, "the optimized system gives a
cost between $246 and $568 per ton CO2 #captured, depending on
the energy costs, while system operates at sub-0Β°C temperatures or with
integration of water harvesting, respectively."
#DAC
5/7 ImageImage
πŸ“– Read open-access study performed by @DonglongFu1 & Mark Devis funded by @Caltech entitled: "Toward the feasible direct air capture of
carbon dioxide with molecular sieves by water
management," here ⬇️
cell.com/cell-reports-p…

#DirectAirCapture
#CarbonDioxideRemoval

6/7

β€’ β€’ β€’

Missing some Tweet in this thread? You can try to force a refresh
γ€€

Keep Current with Geoengineering Info

Geoengineering Info Profile picture

Stay in touch and get notified when new unrolls are available from this author!

Read all threads

This Thread may be Removed Anytime!

PDF

Twitter may remove this content at anytime! Save it as PDF for later use!

Try unrolling a thread yourself!

how to unroll video
  1. Follow @ThreadReaderApp to mention us!

  2. From a Twitter thread mention us with a keyword "unroll"
@threadreaderapp unroll

Practice here first or read more on our help page!

More from @geoengineering1

Apr 30
πŸ“πŸ’‘ π–πžπžπ€π₯𝐲 𝐇𝐒𝐠𝐑π₯π’π π‘π­π¬πŸ’‘πŸ“
Here's is your roundup of top #CarbonDioxideRemoval News Articles / Scientific Papers from the past week: 🌱πŸͺ¨πŸŽ›οΈπŸŒŠ

🧡
1/14 Image
1️⃣ #CarbonRemoval Policy Tracker launched by @CarbonGap to explore Europe’s #CDR #DAC #BECCS policy landscape & pilots.πŸŒ±πŸŽ›οΈ

➑️
2/14
2️⃣ ✍️ @fionaharvey's recent blog post explored the contentious issue related to #CarbonDioxideRemoval technologies.πŸ“°

➑️
3/14
Read 14 tweets
Apr 30
πŸš¨ππ„π– ππ€ππ„π‘πŸš¨

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] Image
"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 Image
"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 β€” or $6 million per year β€” under the 45Q tax credit."
3/6 ImageImage
Read 6 tweets
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 Image
"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 CO2Β hydrates."
2/11 Image
"The new dynamic dual-phase injection test rig was designed, built, and used in this study to assess a range of conditions expected during #CO2Β #injection either into deep saline aquifers or depleted oil and gas reservoirs."
3/11
Read 11 tweets
Apr 29
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:
🌊#OceanIronFertilization
&
🌊#OceanAlkalinityEnhancement."

🧡
1/14 ImageImage
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 Image
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 Image
Read 14 tweets
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 Image
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
Apr 28
πŸš¨ππ€ππ„π‘πŸš¨

πŸ“ "The N-doped #carbon material is one of the most efficient #adsorption materials in the field of carbon capture."Β So, in a recent study a series of N-doped #biochars were successfully prepared by a facile solvent-free method.

Details in a 🧡below ⬇️

[1/7] Image
Among all N-doped biochars, "the #biochar prepared with corncob🌽 powder, K2CO3 & urea at 800°C showed highest #adsorption ability (5.69 mmol/g at 0°C & 1 bar) & selectivity (38.24 at CO2/N2 = 10/90). The biochar also showed excellent thermal stability & cycle performance."
2/7
"Notable, correlation analysis showed that ultra-micropores were the decisive factor for #CO2Β #adsorption at low temperatures; nevertheless, the effect of N-doping would gradually appear with the increase of adsorption temperature."
3/7 Image
Read 7 tweets

Did Thread Reader help you today?

Support us! We are indie developers!


This site is made by just two indie developers on a laptop doing marketing, support and development! Read more about the story.

Become a Premium Member ($3/month or $30/year) and get exclusive features!

Become Premium

Don't want to be a Premium member but still want to support us?

Make a small donation by buying us coffee ($5) or help with server cost ($10)

Donate via Paypal

Or Donate anonymously using crypto!

Ethereum

0xfe58350B80634f60Fa6Dc149a72b4DFbc17D341E copy

Bitcoin

3ATGMxNzCUFzxpMCHL5sWSt4DVtS8UqXpi copy

Thank you for your support!

Follow Us on Twitter!

:(