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

Jul 25
🚨Scientists have discovered a common soil bacterium, Bacillus megaterium, that can rapidly remove CO2 from the atmosphere by transforming it into solid limestone (calcium carbonate) within 24 hours, without creating toxic byproducts.
#CDR #CarbonMineralization

DETAILS🧵1/8 Image
2/ Microbially induced calcite precipitation (MICP) is a technique where microbes precipitate CaCO₃, often used in eco-friendly building materials.

Most MICP uses urease to break down urea, which produces ammonium, a problematic byproduct.
3/ Bacillus megaterium is unique in a sense, it contains both urease and carbonic anhydrase (CA) enzymes. The latter allows it to fix CO₂ directly without needing urea.

But which pathway dominates? This study investigated that. Image
Read 9 tweets
Jul 22
🚨🗓Carbon Removal Events🗓🚨

Here's a list of what's coming up this week (22 July - 28 July 2025) in the field of #CarbonDioxideRemoval:

🔗:

🧵1/11 teamup.com/kshqbfhrqkw36s…Image
EVENT—Food, Ag & Regen Farming + Biotech & Life Sciences Call by 4WARD

🗓23 July 2025 | Online
🔗

2/11circle.4ward.earth/c/events/food-…
EVENT—The Future of Carbon: Technology vs. Nature-based Solutions by Centre for Climate and Business Solutions

🗓23 July 2025 | British Columbia
🔗

3/11lu.ma/gk1jsg18
Read 12 tweets
Jul 21
🚨Solar Geoengineering (#SRM) may seem cheap (~$18B/yr) to cool the planet, but when you factor in societal risks, political instability & sudden climate rebounds, the true cost may far exceed technical estimates from both moral & practical standpoints, says a new study.

🧵1/11 Image
2/ SRM often gets touted as cheap even “pennies per ton” compared to the hundreds of $/ton needed for large-scale CDR.

But these estimates usually ignore the real-world costs of deploying SRM in a politically fractured and climate-damaged world.
3/ The authors outline four cost domains that traditional SRM estimates often miss:

1️⃣ Compensation for harms
2️⃣ International coordination
3️⃣ Domestic political feasibility
4⃣ Termination Shock

Each could add major financial & political costs. Details below: Image
Read 12 tweets
Jul 20
📝💡𝐖𝐞𝐞𝐤𝐥𝐲 𝐂𝐃𝐑 𝐇𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬💡📝

📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (14-20 July 2025):

🔗:

🧵0/23
Frontier facilitated $1.75M in CDR purchases from Karbonetiq, Limenet & pHathom for buyers including Stripe, Shopify & Google.


1/23frontierclimate.com/writing/summer…
SeaO2, in collaboration with TU Delft, University of Twente, and NERA secured nearly $2M for a seawater-to-e-SAF project via TKI Energy and Industry program.


2/23siliconcanals.com/seao2-and-part…
Read 25 tweets
Jul 17
🚨Global talk on #SolarGeoengineering is heating up but Latin America’s barely in the room.

A new study analyzes the #MakeSunsets case in Mexico & shows why Latin America & the Caribbean need urgent, inclusive SRM governance to prevent risks & protect real research.🧵1/8 Image
2/ With climate risks growing, solar radiation modification is gaining attention globally.

Yet in the Latin America & the Carribean (LAC) region, it's still a marginal topic, largely absent from political agendas, public debate, and regulatory systems.
3/ In 2023, a US-based startup called Make Sunsets released SO2 over Baja California without local approval, triggering outrage & prompting Mexico to ban SRM experiments.

The incident highlighted gaps in governance and ethical oversight.
Read 9 tweets
Jul 15
🚨🗓Carbon Removal Events🗓🚨

Here's a list of what's coming up this week (08 July - 21 July 2025) in the field of #CarbonDioxideRemoval:

🔗:

🧵1/17 teamup.com/kshqbfhrqkw36s…Image
EVENT—This is CDR: Divert, Transform, Apply – How BioForceTech is Removing CO2 by Turning Wastewater Sludge into Aggregate by @openaircollect

🗓15 July 2025 | Online
🔗

2/17lu.ma/4mr8gbc9
EVENT—What’s Hot in Carbon Removal – A Peek into the Future of Climate Tech by @airminers

🗓15 July 2025 | Online
🔗

3/17lu.ma/qcfpipnt
Read 18 tweets

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