The newly published article focuses on the physical & chemical aspects of #CO2#storage via liquid & solid chemical carriers & sorbents & gives an overview of the energetics around their use & options for their future development. #CarbonRemoval #CarbonStorage
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Research pointed that "exciting opportunities for coupling #capture and medium to high maturity multi-year #storage technologies could support #CarbonRemoval in the coming decades." 2/7
Highlights of the analysis are:
🔸"The remarkable #storage capacity of oxalic acid & formic acid (CO2-density of 1857 kg m−3 & 1152 kg m−3, compared with condensed liquid CO2 at 993–1096 kg m−3, respectively)." 3/7
Cont'd...
🔸"The relative scalability and compatibility of carbonate salts for stationary storage with #DirectAirCapture, and the potential promise of multiple carriers for CO2 transportation." 4/7
So, results suggested that "solid sorbents do not achieve such ultra-high #storage capacities, but could improve storage over compressed gas tanks on a capacity and energetics basis." 5/7
🚨Researchers at the KAIST and the @MIT have developed a new fiber-based material that can capture CO2 directly from the air using only small amounts of electricity, potentially lowering the barriers to large-scale deployment of direct air capture (#DAC) technology.
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2/ DAC systems, which remove CO2 directly from ambient air, have long been hindered by their high energy requirements.
With atm CO₂ concentrations at less than 400ppm, vast volumes of air must be processed, typically requiring large amounts of heat.
3/ The joint team, led by Professor Ko Dong-yeon of KAIST & Professor T. Alan Hatton of MIT, overcame this limitation by designing an electrically conductive fiber adsorbent (ethylenediamine EDA-Y zeolite/cellulose acetate (CA) fiber) that heats itself through Joule heating.
🚨In a new study published in @OneEarth_CP, researchers reveal that human land activities have stripped away roughly 24% of terrestrial carbon stocks (equivalent to 344 billion metric tons of C), underscoring an urgent need to reframe land-use & climate policy.
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2/ Plants + soils store more carbon than the atmosphere + all fossil reserves combined.
But farming, grazing, and forest use have stripped away this natural shield, turning land from a carbon bank into a carbon source.
3/ Researchers call this loss the terrestrial carbon deficit - the gap between what ecosystems could hold (‘potential’) vs. what they actually hold (‘actual’).
A NEW study suggests Stratospheric Aerosol Injection (#SAI) could help prevent the decline of the Atlantic Meridional Overturning Circulation (#AMOC), but only if aerosols are injected in the appropriate latitude & hemisphere.
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2/ The AMOC is a key component of Earth’s climate system, transporting heat and nutrients across the Atlantic.
Its decline, already underway, is projected to accelerate under global warming, possibly approaching a tipping point this century.
3/ Using CESM2(WACCM6), Bednarz et al. ran sensitivity experiments with SO₂ injections at latitudes from 45°S to 45°N.
Each scenario injected 12 Tg-SO₂/yr (2035–2069) to test how SAI location affects AMOC stability.
🚨Enhanced Rock Weathering (#ERW) could remove up to 700 Mt CO₂ by 2070 in the UK if quarry production scales 5–10×.
Larger extraction sites boost efficiency but raise major social, logistical & policy challenges.
A new @CommsEarth study models the trade-offs.🧵1/11
2/ ERW involves spreading crushed silicate rocks on croplands to capture CO₂.
While previous studies examined its chemistry & agronomic benefits, this work focuses on the supply chain: can the UK sustainably scale rock extraction to meet net-zero needs?
3/ The authors model deployment from 2025–2070 under 3 supply scenarios:
Low (32 Mt rock/yr), medium (97 Mt rock/yr) & high rock (166 Mt rock/yr) demand with variations in whether expansion relies on active, inactive, or new quarries.