Geoengineering Info Profile picture
May 13, 2023 7 tweets 5 min read Read on X
🚨NEW PAPER🚨

"Utilization of biochar as a cementitious material aids in CO2 sequestration by impeding the release of C in the atm. So, a recent study reviewed the prospect of #biochar as a #cementitious material by evaluating its physical, mechanical & durability properties."🧵 ImageImage
This research suggested that "the physical properties of #biochar promote its use as an environmental control device."
A summary of the preparation and characterization of biochar is presented in a Fig. ⬇️
2/7 Image
According to the study, #pozzolan is a siliceous & aluminous material
that chemically reacts with Ca(OH)2 at room temp to form compounds having #cementitious attributes. So, some of the silica-rich biochars, like the ones derived from #RiceHusk have pozzolanic properties."
3/7 ImageImage
"The quantity & type of biochar used, the number of curing days & the curing technique all have an impact on the strength of biochar-infused concrete/mortar. However, investigations concluded that biochar used at lower conc. (<5 wt%) produce high-strength mortar+concrete."
4/7 Image
This research recommended that "most of the prior work focuses on the thermal stability of #biochar. However, research on chemical & chloride attacks as well as the ageing & weathering study is scarce. Thus, future work should focus on the aforementioned gaps in knowledge."
5/7
Read the open-access study entitled: Biochar in cementitious material—A review on physical, chemical, mechanical, and durability properties" here ⬇️
aimspress.com/article/doi/10…

#Biochar
#CarbonSequestration
#CementitiousMaterial

6/7 Image

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More from @geoengineering1

Feb 6
🚨🌾🚜Can farming fight climate change?🚜🌾🚨

A new study suggests Enhanced Weathering (EW)—spreading crushed basalt on U.S. croplands—could remove 160–300M tonnes of CO₂ annually by 2050 while improving soil & air quality.
#ERW #CarbonDioxideRemoval

DETAILS🧵1/8 Image
2/ How it works: When crushed basalt is applied to soil, it reacts with CO₂, forming stable carbonate minerals that lock away carbon for thousands of years. The process also releases nutrients that benefit crops.
3/ CDR potential: The study estimates that if EW is widely deployed across U.S. farmland, it could capture up to 15% of the country’s annual CO₂ emissions by 2050.

*EW deployed on agri land could sequester 0.16–0.30 GtCO2/yr by 2050, rising to 0.25–0.49 GtCO2/yr by 2070. Image
Read 9 tweets
Feb 5
🚨The #CDR market surged in 2024—growing 78% with record purchases & deliveries. But behind the numbers, challenges loom: concentrated buyers, slow deliveries & a shifting investment landscape.

Is CDR on track or at risk? A🧵on the key takeaways from @cdr_fyi’s new report: 1/8 Image
2/ Market Expansion: The CDR market expanded by 78% in 2024, with total purchased volume nearing 8 million tonnes. However, these purchases remain concentrated, with 80% coming from just Microsoft, Google, Stripe, and Frontier. Image
3/ Increased Deliveries: Durable CDR deliveries reached 318.6K tonnes, marking a 120% increase from 2023. Despite this, the delivery-to-booking ratio remains low at 4.4%, which is expected at this developmental stage. Image
Read 9 tweets
Feb 4
🚨🗓CDR REMINDERS!🗓🚨

Here's a list of what's coming up this week (04 February - 10 February 2025) in the field of #CarbonDioxideRemoval

#CDREvents #Deadlines #CDRJobs

🔗🗓️Link to the CDR Events Calendar:


🧵1/10 teamup.com/kshqbfhrqkw36s…Image
EVENT—This Is CDR: Nakivale - Uganda's Refugee-Led Biochar Enterprise by @openaircollect

🗓04 February 2025 (Today)
📍Online
⏰12:00-01:00PM ET
🔗

2/10lu.ma/pi965gr5
CALL FOR PROPOSALS—DACCS and BECCS for CO2 removal/negative emissions by Horizon Europe Framework Programme (HORIZON)

🗓Deadline: 04 February 2025
🔗

3/10ec.europa.eu/info/funding-t…
Read 12 tweets
Feb 3
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (27 January - 02 February 2025):

🔗:

🧵0/20
@SthlmExergi secured over 20 billion SEK in Sweden’s BECCS reverse auction. The funding, disbursed over up to 15 years, will help permanently remove 800,000 tons of CO₂ annually.


1/20beccs.se/news/stockholm…
Manulife raised $480M for its Forest Climate Fund, prioritizing carbon sequestration over timber. The fund aims to capture 6M+ tons of CO₂ and has already acquired 150,000+ acres of land.


2/20esgtoday.com/manulife-raise…
Read 23 tweets
Jan 30
🚨💣The strangest geoengineering idea yet?💣🚨

A new paper suggests detonating an absolutely gigantic nuclear bomb (1,600x bigger than Tsar Bomba) deep beneath the seabed to accelerate carbon removal (#CDR).

A thread on this bold climate proposal:🧵1/11 Image
2/ Climate change is an existential threat, which is why some researchers explore extreme solutions. This one might be one of them.

The idea? Use a nuclear bomb to shatter massive amounts of basalt, speeding up Enhanced Rock Weathering (#ERW)—a natural carbon capture process.
3/ ERW works because rocks like basalt react with CO₂, locking it away in mineral form. Scientists have suggested that crushing basalt into fine particles accelerates this process. "But even when optimized, ERW is slow & limited in scale." That’s where the nuclear bomb comes in
Read 12 tweets
Jan 28
📅CDR REMINDERS!📅🚨

Here's a list of what's coming up this week (28 January - 03 February 2025) in the field of #CarbonDioxideRemoval

#CDREvents #Deadlines #CDRJobs

🔗🗓️Link to the CDR Events Calendar:


🧵1/12 teamup.com/kshqbfhrqkw36s…Image
EVENT—This Is CDR: Structure Climate - Innovative Approaches to Carbon Removal Finance, with Matt Schmitt (CEO) by @openaircollect

🗓28 January 2025
📍Online
⏰12:00-01:00PM ET
🔗

2/12lu.ma/88g7hi0f
EVENT—Demystifying Carbon Credits by gener8tor

🗓29 January 2025
📍Online
⏰01:00-02:00PM ET
🔗

3/12gener8tor.zoom.us/webinar/regist…
Read 14 tweets

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