Carbon Capture
- Africa’s first carbon-removal plant stokes questions about responsible climate solutionswww.nbcnews.com Africa’s first carbon-removal plant stokes questions about responsible climate solutions
A joint venture between Swiss company Climeworks and Kenya-based Great Carbon Valley has been billed as a springboard for creating a new, green economy in Africa.
- Direct Air Capture vs Thermodynamics (Cool Worlds) [25:12]
- https://piped.video/watch?v=EBN9JeX3iDs
- https://www.youtube.com/watch?v=EBN9JeX3iDs
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Direct Air Capture (DAC) has been getting more and more attention over the last few years. Could we avert climate change by pulling carbon dioxide out of the atmosphere? Could we not just stop, but actually reverse the damage done? Unfortunately, most don't fully appreciate just quite how much CO2 we've emitted and the outrageous scale of the problem facing us. Today, we apply the fundamental principles of thermodynamics to question whether this is even feasible.
Written & presented by Prof. David Kipping. Edited by Jorge Casas. Fact checking by Alexandra Masegian.
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Channel Description:
Space, astronomy, exoplanets, astroengineering and the search for extraterrestrial life & intelligence.
The Cool Worlds Lab, based at the Department of Astronomy, Columbia University, is a team of astronomers seeking to discover and understand alien worlds, particularly those where temperatures are cool enough for life, led by Professor David Kipping.
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CHAPTERS (and key bits)
- 0:00 Climate Change: Some CC is needed just to maintain a level.
- 2:44 Removal Requirements: We released 37 Gt of CO2 in 2022.
- 3:38 Possible Solutions: Trees are good for 4 years, then no space.
- 5:03 Introducing DAC: IPCC estimates 20 Gt/yr @ 2050 required.
- 5:43 Climate Anxiety: This video is sponsored by betterhelp.
- 7:12 DAC Principles: Currently 19 DAC plants remove 10'000 tCO2/yr, or 0.000003% of global emissions.
- 8:14 Scalability: Why this video focuses on physics, not economics
- 9:29 Thermodynamics: Why DAC is a fight against entropy, introducing Gibbs. Lower limit: 120 kWh/tCO2
- 12:08 Progressive DAC: Starting in 2025, remove how much and how fast?
- 13:32 RCPs: Why 2.6 is discarded, why 4.5 is chosen (with an outlook on 8.5)
- 15:09 Simulations: For 450 ppm, we need to scrub 20 GtCO2 in 2050. For 350, almost 80 Gt.
- 17:03 Energy Requirements: 450 ppm requires 5% of global electricity. 350: 15%.
- 19:34 Efficiency: Above numbers assumed 100% efficiency. Current estimate 5%, measured 8%.
- 21:21 Conclusions: It's tough to do, but just possible. Easiest way: Stop emitting.
- 24:35 Outro and credits
- US Department of Energy analysis says coal carbon capture project would emit more greenhouse gases than it storesenergyandpolicy.org Department of Energy analysis says coal carbon capture project would emit more greenhouse gases than it stores
The Department of Energy says Project Tundra will emit more than it stores. The coal carbon capture project faces delays and increased costs
- The Role of Synthetic Biology in Atmospheric Greenhouse Gas Reduction
Summary:
- decisions are complicated, wide-ranging.
- scaling is not easy - petri-dish is easy, reactor or wide deployment is not (like other reactors)
- containment is difficult
- cost-benefit ratio is important and complicated to determine
- while any release is global, GMO regulation differs vastly between countries.
DeLisi, C., et al (2020). The Role of Synthetic Biology in Atmospheric Greenhouse Gas Reduction: Prospects and Challenges. BioDesign Research, 2020, 2020/1016207. DOI: 10.34133/2020/1016207
- Organizations
- Work On Climate - includes job board on slack, lots of people
- Airminers - startups and ideas
- Project Vesta - accelerated weathering on the beachwww.projectvesta.org Vesta / Science
Help reverse climate change by turning a trillion tonnes of CO2 into rock.
Taking rock (Olivine) and dumping it on the beach, so that the waves break it down, adjust ocean pH and mineralize the CO₂.
- Overview: Microalgal Biorefinery Concept and State-of-the-Artwww.frontiersin.org Frontiers | Overview of Carbon Capture Technology: Microalgal Biorefinery Concept and State-of-the-Art
The impending danger of climate change and pollution can now be seen on the world panorama. The concentration of CO2, the most important Green House Gas (GHG...