How NEG8 Carbon's DAC Technology Works
Direct Air Capture is a technology that removes carbon dioxide (CO₂) from the air. In the NEG8 Carbon solution, the atmospheric air is drawn into the unit by large fans and the CO₂ attaches to solid sorbents at ambient temperature ranges. When the sorbent is heated, the concentrated CO₂ is released and stored.
(Learn more: How Does Direct Air Capture Work?)
Our Direct Air Capture technology is based on modular, scalable ‘plug-and-play’ units designed for large-scale distributed operations that aim to capture over 50,000 tonnes of CO₂ annually. The technology was proven by a prototype in 2022 that captured 1.2 tonnes of CO₂ annually, while the current DAC modules can capture 4200 tonnes of CO₂ per annum each.
NEG8 Carbon DAC Technology in Action
Carbon Capture Innovations
NEG8 Carbon is continuously pursuing technological advancement to bring down energy, process and manufacturing costs to make DAC widely accessible.
Currently, we have a number of advanced technologies under development:
Advanced Sorbent Deployment
NEG8 Carbon has developed a novel way of deploying sorbents, the material used for capturing the CO₂. It uses a revolutionary method for fixing and releasing the sorbent in a thin layer to a heat exchanger.
Benefits:
• Faster CO₂ capture and release
• Low volume of sorbent
• Ease of loading/unloading sorbent to/from the heat exchanger
Enhanced Heat Exchange Process
Another advanced technology dramatically improves the heat exchange process within the DAC system. It optimises heat transfer to the sorbent material, enabling faster heat transfer, improving the efficiency of the sorbent’s regeneration process and increasing the rate of CO₂ capture.
Benefits:
• Rapid regeneration time (10 minutes)
• Low regeneration temperature
• Dramatic increase in CO₂ capture rate
• Highly energy efficient
Why it’s important?
CO2 concentration in the atmosphere (parts per million)
Global temperature rise since pre-industrial times (°C)
CO2 emitted this year (tonnes)
Carbon Capture Challenges and Solutions
Deployment and Maintenance Costs
We have a relentless focus on driving down the Capital and Maintenance costs of our DAC systems. We aim to use ready-made components in our advanced technologies in order to drive down Capital costs. And by developing technologies to use less sorbent that has a longer life, we are lowering Operational costs and extending the lifespan of the system. Additionally, our modular design makes the system easier and cheaper to scale for larger projects.
Energy Efficiency and Sustainability
The NEG Carbon DAC system requires less energy than conventional DAC solutions, making it more cost-effective and environmentally friendly.
Our latest innovations reduce power usage by using less sorbent and lowering the temperature needed for CO₂ extraction to 65°C. This not only saves energy but also extends the lifespan of the sorbent.
The power consumption of NEG8 Carbon’s DAC units ranges from 0.4 – 1.3 MWh/tonne CO₂ captured.
We can use waste heat to optimise our power performance, and a useful byproduct of our DAC system is pure water which further enhances operational sustainability.
Sequestration and Utilization
To reduce or eliminate transport emissions, cost and risks, DAC parks can be located at the site of sequestration and/or utilization, away from urban areas. Alternatively, the captured CO₂ can be stored safely in depleted oil wells or other certified storage areas.
Moreover, DAC sites can be powered by off-grid renewable energy which means they do not interfere with the local community’s power supplies.
Learn more about carbon sequestration and carbon utilization.
Monitoring, Reporting, and Verification (MRV)
A key feature of DAC technology is its ability to measure CO₂ capture accurately, which promotes transparency and credibility for carbon emission compliance. We are aiming to drive down DAC capture costs to around $150 per tonne of CO₂ captured with innovations that lower power costs and increase sorbent efficiency.
People Often Ask
What is Direct Air Capture?
Direct Air Capture is a technology that uses molecular technology to extract carbon dioxide (CO₂) from the air to fight climate change caused by CO₂ emissions.
More About Direct Air Capture
How Does Direct Air Capture Work?
Direct Air Capture technology works by drawing in large quantities of air and passing it over specifically designed nano materials that attract and capture carbon dioxide molecules.
More About How Direct Air Capture Works
What Happens to the Captured CO₂?
The captured CO₂ can be permanently and safely stored underground using geological mineralisation or in depleted oil and gas wells. Another option is to use the CO₂ in making climate-neutral carbon products, such as sustainable aviation fuel (SAF), contributing to a cleaner, greener future.
More About Carbon Sequestration and Carbon Utilization
Difference Between Direct Air Capture and Point Source Carbon Capture
Direct Air Capture removes the already emitted CO₂ in the atmosphere at any location in the world, while point source carbon capture takes place at the point of emission, such as a power station. There are distinct differences in their roles and benefits. Find out more:
More About Direct Air Capture vs Point Source
Get in touch
Are you looking to learn more about our carbon capture technology or need a partner to help meet your ESG goals?
Join us at NEG8 Carbon in our mission to combat climate change and create a sustainable future for our planet by exploring our Direct Air Capture solutions and filling out our contact form to learn more.