• Our People
  • Global Presence
  • Regions
    • Asia
    • Europe
    • Americas
  • Offices
    • Canada
      • Ottawa
      • Toronto
    • China
      • Beijing
      • Hong Kong
    • Luxembourg
    • Malaysia
    • Singapore
    • UK
      • Aberdeen
      • Birmingham
      • Cambridge
      • Edinburgh
      • Glasgow
      • London
      • Manchester
      • Oxford
  • Client liaison
    • Japan
    • Korea
  • Expertise
  • Services
    • Patents
    • Brands & Trade Marks
    • Designs
    • Litigation & Dispute Resolution
    • Commercial IP & Contracts
    • Due Diligence
    • Freedom to Operate
    • EPO Patent Oppositions
    • European Patent Validations
    • Anti-counterfeiting
    • Open Source & Third Party Code
  • Sectors
    • Energy & Environment
    • Life Sciences
    • Agritech
    • Medical Technologies
    • Chemistry
    • Transport
    • Entertainment & Creative Industries
    • Food & Drink
    • Fashion & Retail
    • Universities & Research Bodies
    • Start-ups & Spin-outs
    • Digital Transformation
      • 3D Printing
      • Artificial Intelligence
      • Blockchain
      • Data & Connectivity
      • Extended Reality
      • Industry 4.0
  • About Us
    • Working with us
    • Awards
    • Corporate & Social Responsibility
    • Diversity & Inclusion
    • Careers
  • Insights
    • Articles
    • News
    • Events
    • Resources
    • M&C Reacts
  • Contact Us
Marks & Clerk logo
Marks & Clerk logo
Contact Us
Language
English
Our People
Global Presence
Regions
  • Asia
  • Europe
  • Americas
Offices
  • Canada
    • Ottawa
    • Toronto
  • China
    • Beijing
    • Hong Kong
  • Luxembourg
  • Malaysia
  • Singapore
  • UK
    • Aberdeen
    • Birmingham
    • Cambridge
    • Edinburgh
    • Glasgow
    • London
    • Manchester
    • Oxford
Client liaison
  • Japan
  • Korea
Expertise
Services
  • Patents
  • Brands & Trade Marks
  • Designs
  • Litigation & Dispute Resolution
  • Commercial IP & Contracts
  • Due Diligence
  • Freedom to Operate
  • EPO Patent Oppositions
  • European Patent Validations
  • Anti-counterfeiting
  • Open Source & Third Party Code
Sectors
  • Energy & Environment
  • Life Sciences
  • Agritech
  • Medical Technologies
  • Chemistry
  • Transport
  • Entertainment & Creative Industries
  • Food & Drink
  • Fashion & Retail
  • Universities & Research Bodies
  • Start-ups & Spin-outs
  • Digital Transformation
    • 3D Printing
    • Artificial Intelligence
    • Blockchain
    • Data & Connectivity
    • Extended Reality
    • Industry 4.0
About Us
  • Working with us
  • Awards
  • Corporate & Social Responsibility
  • Diversity & Inclusion
  • Careers
Insights
  • Articles
  • News
  • Events
  • Resources
  • M&C Reacts

A Shift in Carbon Capture and Storage Technology?

21 May 2021
Elliot Carrington Emma Foster
Print
Share

Introduction

Carbon capture and storage (CCS) remains a hot topic around the world as pressure mounts upon big businesses to address their impact on climate change. In particular, a number of high profile individuals and companies have recently announced a huge investment in CCS. For example, Elon Musk has pledged $100m as part of global prize to demonstrate large-scale CO2 removal1 and Exxon Mobil has created its own dedicated Low Carbon Solutions business, with plans to invest $3 billion through to 2025.2

Some companies have even made explicit commitments to go beyond zero carbon emissions and pursue negative carbon emissions. For example, Microsoft has committed to removing all its historic carbon emissions by 2050.3 While green technologies have become more advanced over recent years, achieving such grand targets is likely to require a significant amount of innovation. This thought was echoed by the European Patent Office, which has its own plans to be carbon neutral by 2030,4 in a combined report with the International Energy Agency published recently.5,6 It also seems inevitable that companies are going to need to start removing the CO2 already present in the atmosphere, in addition to preventing new carbon emissions.

Direct Air Capture

Technologies for directly removing CO2 from the atmosphere, often referred to as Direct Air Capture (DAC) technologies, have been contemplated for a while and there are now various small-scale pilot plants in operation. The designs typically involve using large fans to pull untreated air through a filtration system, in which the CO2 is selectively removed. The captured CO2 is then released as a pure CO2 stream and the filtration system is regenerated. The pure CO2 can either be sustainably stored (e.g. through reaction with basalt rock7) or utilised for other applications (e.g. plastic generation, bio-fertilizers, synthetic fuels, or even to carbonate soft drinks). Possible filtration systems include:

  • reacting aqueous alkali/alkali-earth metal hydroxides with CO2 to precipitate the corresponding alkali/alkali-earth metal carbonate;8-9
  • carbonating solid inorganic bases such as calcium oxide;10
  • using alkali metal carbonates impregnated within porous matrices;11 or
  • using amines that are actively bound within porous substrates12-13 (this taking inspiration from the amine-based solutions currently being used for removing CO2 from the flue streams produced by commercial power plants).

However, building a large-scale and commercially viable DAC system poses significant challenges. Key difficulties include the low concentration of CO2 in air, the practical implications of designing a suitable filtration system, and the energy-intensive nature of the regeneration of the filtration system, meaning that clever design is required to ensure that it functions without generating more CO2 than is captured (e.g. by connecting the system to an existing waste heat source). Despite these difficulties, with an increase in funding for research in the area and a number of dedicated carbon removal companies now expanding their operations, it appears that this technology may soon start to be used on a more appreciable scale.

Has there been an increase in innovation?

A good way to monitor commercially relevant research and development is to study the trends in patent applications published in a particular technological field. Figure 1a shows the number of patent applications directed to carbon capture technology published over the last 10 years. This graph suggests that the number of new advances year on year in CCS has remained relatively consistent. However, if we look at the relative proportion of the patent applications that mention air capture, there has been more than a three-fold increase over this period (Figure 1b). This suggests that innovation in CCS is shifting to become targeted at this much tougher, but highly attractive, goal.

Figure 1a). Number of published patent applications that were tagged with CPC code Y02C20-40 (capture or disposal of greenhouse gases, specifically CO2) at the USPTO (green), CNIPA (orange), WIPO (grey) and EPO (yellow). Figure 1b). Percentage of the total publications which also contain the keyword “air” near the keyword “captur*”.

Is the technology commercially viable?

A number of companies dedicated to DAC now exist and are looking to commercialise the technology. More encouragingly, these companies seem to have recently gained traction in the market. For example, Climeworks, which uses solid absorbents and claims the world’s first commercial DAC plant14, has recently started work on a large-scale plant in Iceland15 and has also been selected to form part of Microsoft’s carbon removal portfolio to help achieve its target of negative emissions;16 Global Thermostat, which employs amine-based sorbents bound to porous substrates, has recently expanded its agreements with ExxonMobil following a successful technical evaluation;17 and Carbon Engineering, which employs the aqueous metal hydroxide approach, has joined forces with Pale Blue Dot Energy to develop plans to deploy DAC technology in the UK.18

Conclusion

In summary, DAC appears to be a rapidly developing field that could soon be offering large-scale solutions to mitigate climate change. We therefore expect that the number of patent applications directed to DAC technology will continue to increase and we look forward to monitoring the next set of developments in this increasingly important research area.

References

  1. https://www.xprize.org/prizes/elonmusk
  2. https://corporate.exxonmobil.com/News/Newsroom/News-releases/2021/0201_ExxonMobil-Low-Carbon-Solutions-to-commercialize-emission-reduction-technology
  3. https://blogs.microsoft.com/blog/2020/01/16/microsoft-will-be-carbon-negative-by-2030/
  4. https://www.epo.org/news-events/news/2021/20210427a.html
  5. Patents and the energy transition, global trends in clean energy technology innovation, April 2021, EPO & IEA
  6. https://www.epo.org/news-events/news/2021/20210427.html
  7. https://www.carbfix.com/how-it-works
  8. Sanz-Perez, E. S. et al, Chem Rev. 2016, 116, 19, 11840-11876
  9. Lackner, K. S. et al, Proceedings of the 24th Annual Technical Conference on Coal Utilization & Fuel Systems, Clearwater, FL, 1999; 885–896.
  10. Nikulshina, V. et al, Eng. J. 2008, 140, 62-70
  11. Przepiórski, J. et al, Eng. Chem. Res. 2013, 52,  6669-6677
  12. Belmabkhout, Y. et al, Eng. Sci. 2010, 65,  3695-3698
  13. Choi, S et al, Sci. Technol. 2011, 45, 2420-2427
  14. https://climeworks.com/news/today-climeworks-is-unveiling-its-proudest-achievement
  15. https://climeworks.com/news/climeworks-makes-large-scale-carbon-dioxide-removal-a-reality
  16. https://climeworks.com/news/this-negative-emission-plan-by-microsoft-marks-an-important
  17. https://corporate.exxonmobil.com/News/Newsroom/News-releases/2020/0921_ExxonMobil-expands-agreement-with-Global-Thermostat-re-direct-air-capture-technology
  18. https://carbonengineering.com/news-updates/pale-blue-dot-energy-and-carbon-engineering-partnership/

 

Next Story
  • Net Zero – 10,000 days to go
  • What makes a good intellectual property solicitor?
  • Artificial Intelligence (AI) in the Agritech space
  • Cook v Boston – practicalities relating to the Shorter Trial Scheme and costs budgeting
  • Patenting DLT innovations in Europe
More insights

Latest Insights

Article
- 19 August 2022

Net Zero – 10,000 days to go

As of this week, it is 10,000 days until the start of 2050, which is when the vast majority of the world is aiming to arrive at net zero. Much progress has taken place around the world and in this article we will explore the journey being undertaken on the road to net zero in critical materials and alternative fuels.
Read more
What makes a good IP solicitor?
Article
- 15 August 2022

What makes a good intellectual property solicitor?

A vital value of most UT Companies is their IP in terms of patents, trademarks etc. Sometimes the IP comes under attack from competitors or other companies, which is where an Intellectual Property Solicitor comes in. But how do they work, and what is the difference between a Property Solicitor and a Patent Attorney?
Read more
Article
- 12 August 2022

Artificial Intelligence (AI) in the Agritech space

The European Patent Office (EPO) has seen a remarkable increase in the number of AI patent filings in the Agritech sector in recent years. In this article we highlight the growth from the year 2000 until 2019.
Read more
Marks & Clerk logo (white)
  • Terms & Conditions
  • Privacy Notice
  • Cookies
  • Legal Notices
  • Lexology
  • Mondaq