"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."🧵
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
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
"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
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…
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (05 May - 11 May 2025):🧵0/17
Stockholm Exergi and Microsoft have extended their BECCS carbon removal deal from 3.33 to 5.08 million tonnes over ten years, making it the world’s largest annual agreement at 500,000 tonnes per year.
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 April - 04 May 2025):
🔗:
🧵0/21
Mirova announced a $40M investment in carbon projects across Argentina, Costa Rica, and Madagascar to restore 40,000 hectares, sequester 9.5M tonnes of CO₂, and support local communities.
Brazilian carbon removal startup Mombak has secured $30 million in Series A funding, led by Union Square Ventures (USV), to accelerate reforestation and carbon removal projects across the Amazon.
New research shows that large-scale #CDR—essential for 1.5°C or 1°C climate goals—could demand vast land areas if we rely on energy crops, potentially up to 10% of today’s cropland. But tech-based sol could greatly reduce that burden.
DETAILS🧵1/8
2/ Most CDR plans today focus on bioenergy with carbon capture (#BECCS), reforestation, and afforestation. These options are land-intensive. This study compares them with other portfolios that prioritize low land use, low cost, high tech readiness, and security.
3/ The researchers modeled two total CDR targets:
• 500 GtCO₂ for a 1.5°C pathway
• 1750 GtCO₂ for a 1.0°C pathway
They included not just the land for CDR methods, but also for energy sources like solar and wind to run the full CDR-energy-industry system.
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (21 April - 27 April 2025):
🔗:
🧵0/25
@xprize announced the winners of its $100M CDR competition. The grand prize of $50M went to @mati_carbon for ERW. Other awards included $15M to @NetZero, $8M to @VaultedDeep, $5M to @undocarbon & $1M each to Planetary & Project Harar.
Microsoft has signed a large-scale carbon removal deal, purchasing 1.4 million tonnes of credits from @living_carbon’s reforestation projects on degraded U.S. mine lands.