ETH Zurich unveils revolutionary photosynthetic material to absorb CO2 from air and build structures
Overview of the Material Development
- Swiss research team engineered a living material with cyanobacteria.
- Material captures CO2 via photosynthesis and mineralizes it into stable carbonates.
- Described as "self-repairing" and hardens into a mineral skeleton.
- Suitable for constructing carbon-neutral buildings.
- Stored up to 26 mg of CO2 per gram over 400 days.
Innovation and Sustainability
- Combines dual carbon storage (biomass and mineral) without high energy requirements.
- A significant advancement in climate technology.
- Potential applications include building facades that combat climate change.
How It Works: CO2 Capture Mechanism
- Utilizes cyanobacteria to convert sunlight, water, and CO2 into oxygen and sugars.
- Produces a mineral structure through microbially induced carbonate precipitation (MICP).
- Hardens over time, creating a durable construction material.
- Acts as a ‘self-reinforcing’ framework for carbon sequestration and structural stability.
Study Results
- Demonstrated CO2 storage efficacy over 400 days.
- Biomass production peaks after 30 days; mineralization continues for long-term storage.
- Distinct from conventional carbon-capture systems, which use energy-intensive machinery.
Applications in Construction
- 3D-printable design allows for customizable shapes and structures.
- Potential for building materials like carbon-sucking skyscrapers and green pavements.
- Evolution of urban environments into carbon-neutral ecosystems.
Challenges Ahead
- Material's lifespan needs further testing beyond 400 days.
- Large-scale production could face challenges with nutrient supply and structural integrity.
- Potential solutions include solar-powered nutrient delivery systems and adaptable materials.
Vision for Future Infrastructure
- Breakthroughs like this material could address rising CO2 levels.
- Highlights the importance of biomimicry in climate action.
- If widely deployed, could transform urban landscapes into regenerative ecosystems.
Next Steps
- Focus on scaling technology for real-world applications.
- Emphasizes the fusion of nature and technology for a greener future.
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