🚨REVIEW PAPER🚨 #Hydrogen, a green energy carrier, is one of the most promising energy sources. However, it is currently mainly produced from depleting #FossilFuels with high #carbon emissions, which has serious -ve effects on the economy and environment. #HyBECCS #ATT
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To address this issue, sustainable hydrogen production from bio-energy with #carbon capture and #storage (#HyBECCS) is an ideal technology to reduce global carbon emissions while meeting energy demand. 2/6
So, a recent review presents an overview of "the latest progress in alkaline thermal treatment (#ATT) of #biomass for #hydrogen production with #carbon storage, mainly focusing on the technical characteristics & related challenges from an industrial application perspective." 3/6
Additionally, the roles of alkali and catalyst in the #ATT process are critically discussed in the review, and several aspects that have great influences on the ATT process are expounded, such as:
🔸biomass types
🔸reaction parameters
🔸reactors 4/6
Review concluded that "compared with WGS, MEC, SMR, #biomass dark fermentation & gasification, #ATT of biomass for #H2 production has the benefits of:
🔸wide range of feedstocks
🔸low energy consumption
🔸high purity of H2
🔸#NegativeCarbonEmission from entire LC of biomass 5/6
Read the open access review on sustainable hydrogen production from bio-energy with carbon capture and storage (HyBECCS) here ⬇️ sciencedirect.com/science/articl…
🚨New research out on US public perceptions of #SolarGeoengineering:
More Americans oppose SRM research than support it, and 1 in 5 believe government-led atmospheric modification is already underway.
DETAILS🧵1/11
2/ Using 64 interviews, 10 focus groups, and a survey of 3,076 Americans, the study found strong initial rejection of solar radiation modification (#SRM) as a research priority.
Skepticism, fear of unintended consequences, and concern over “playing God” were dominant themes.
3/ Only 32.6% supported further SRM research. A notable 43.7% opposed it. For comparison, support was ~80% in similar studies from a decade ago. Enthusiastic support is now virtually nonexistent in qualitative responses.
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (28 July - 03 August 2025):
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Germany’s 2026 draft budget allocated €111 million for negative emissions in 2026 and a further €320 million in subsequent years. A new federal department has also been set up to focus on carbon removal.
🚨How does #SolarGeoengineering affect air pollution & public health?
New study using a cutting-edge Earth system model shows that #SAI has only modest effects on PM₂.₅ & ozone-related mortality & these impacts are mostly due to climate shifts, not aerosol deposition.🧵1/8
2/ Using CESM2-WACCM6 simulations across three scenarios (SSP2-4.5 baseline, ARISE-SAI-1.5, ARISE-SAI-1.0), the study quantifies global mortality attributable to ozone (O₃) & fine particulate matter (PM₂.₅) under future SAI deployment targeting 1.5°C and 1.0°C warming levels.
3/ Findings:
In the ARISE-SAI-1.5 scenario, maintaining global mean temp at 1.5°C above pre-industrial levels via SAI results in:
- 1.26% reduction in ozone-related mortality
- 0.86% increase in PM₂.₅-related mortality during 2060–2069, relative to SSP2-4.5.
📰 Here's your round-up of top #CarbonDioxideRemoval News / Developments from this week (21-27 July 2025):
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Chestnut Carbon secured up to $210M in non-recourse financing, led by J.P. Morgan for its afforestation project, marking a first-of-its-kind deal in the US carbon removal space.
🚨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
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.