Direktluftinfångning: Hur en nästa generations reaktor kan bli allmänt antagen

A team of innovative engineers from Rice University has achieved a major milestone in the carbon capture industry with their latest development that could revolutionize the market. The researchers successfully created an electrochemical reactor that can enhance carbon capture from the atmosphere with unmatched efficiency and no harmful byproducts. Here’s how this new direct air capture method could make the world one step closer to achieving net-zero carbon emissions in the future.

Utsläpp når nya höjder och leder till klimatkatastrofer

A rapport publicerad i BioScience som studerar det aktuella klimatläget fann att världen är “på gränsen till en oåterkallelig klimatkatastrof.” Samma studie visade att utsläppen från fossila bränslen har ökat till en historisk topp. Denna tillväxt framhölls av det faktum att de tre varmaste dagarna någonsin inträffade i juli 2024. Dessutom slog havsytans temperatur nya rekord 2024 i flera regioner.

All denna klimatdata pekar på den obestridliga faktan att det är dags för regeringar att ta initiativet. Lyckligtvis finns det flera tillvägagångssätt att välja mellan. Att driva hållbarhet och förnybarhet ligger i centrum för detta tillvägagångssätt. Från att främja fler elbilar och alternativa energikällor till att beskatta slösaktiga tillverkare, finns det lösningar som är värda att följa.

Notably, there isn’t one option that can solve this problem. People will need to change their habits alongside technological advancements to achieve victory. One such tech, Carbon capture, usage, and storage (CCUS) is seen as one of the best ways to help achieve these goals.

Direktluftinfångning – nuvarande metoder

Reducing carbon emissions is a priority for environmentalists globally. Notably, direct air capture is the most popular method of removing CO₂ from the atmosphere. There are several ways that this process can be initiated. However, they all require the use of dangerous chemicals that leave byproducts, or an intense amount of energy is required to complete the extraction process.

The most popular methods use chemicals to bond carbon and oxygen atoms in the gas molecules to other compounds in purpose-selected liquids. The CO₂ is introduced via a mixed gas stream of varying degrees and strengths to trap the dioxide molecules in the liquid. Once contained in the solutions, the CO₂ extraction process begins.

The extraction process is the most energy-intensive part of the procedure. Depending on the gas options it can require multiple steps and highly specialized locations. The most common methods of extracting CO₂ from the solvents involve heat, chemical reactions, or electrochemical processes. Additionally, the type of solvent used dictates the intensity and effectiveness of this approach.

Aminebaserade sorbenter

The most popular solution used for carbon capture is Amine-based sorbets. This solution is effective at trapping CO₂ without using a lot of energy. However, the solution is unstable and toxic, resulting in additional risk and storage costs following the process.

Natrium- och kaliumhydroxid

Scientists have also introduced a less toxic approach that utilizes Sodium or potassium hydroxides as the trapping solvent. This strategy provides solid bonds between the CO₂ and solvent atoms. The problem is that the bonds are so strong they require an enormous amount of heat to break, releasing the carbon. As such, this method is expensive and requires a lot of specialty equipment.

Studie av PSE-reaktor för direktluftinfångning

Recognizing the limitations of these technologies and the clear demand for a more sustainable and easier-to-integrate solution. RICE University engineers went to work creating the first room temperature direct air capture device. The team published their findings in Nature Energy¹.

The report introduces the PSE (Porous Solid Electrolyte) reactor. This electrochemical regeneration device relies on electrical energy to separate carbon from the air rather than heat or other more expensive methods. The reactor described integrates a porous solid electrolyte layer, enabling researchers to optimize electrical inputs. These inputs dictate ion movement and mass transfer, ushering CO₂ molecules away using current rather than chemicals.

Testresultat för PSE‑reaktor för direktluftinfångning

The reactor successfully proved it could remove CO₂ without the need for heat. Its modular three-chambered structure allows the reactor to separate alkaline absorbent in one and high-purity carbon dioxide in the other. The team found that the reactor could selectively split NaHCO₃/Na₂CO₃ solutions with 90% capture capacity. Impressively, the reactor only required a tiny amount of energy and proved to be resilient across different mixtures.

Vätgasproduktion

The report also found that the process can be used to cogenerate hydrogen. Hydrogen fuel is already in use to power a variety of items, heat homes, and much more. Hydrogen fuel cells can cleanly and efficiently produce electricity. It makes sense to add them to the team’s overall goal of driving sustainability to new heights.

Fördelar som PSE‑reaktorn för direktluftinfångning ger på marknaden

This research brings a lot of benefits to the table. For one, the entire project relies on already available and tested technologies. This strategy makes the venture more practical. It’s easier to integrate, train new users, and innovate the process, as products like hydrogen fuel cells have been commercially available for a decade.

Kostnadseffektiv

Another major benefit of the PSE reactor is its low operating and build costs. Businesses can save funding using this approach versus heat-intensive or wasteful options. As such, many see this technology as a major step toward reducing the price of capturing emissions.

Minska energibarriärer

Another major benefit of lowering energy consumption is that it opens up the technology to more applications and industries. The report highlighted the process’s low energy consumption, demonstrating that the process could save businesses big time in the future.

Skalbar

Scalability is another benefit that can’t be overlooked. The PSE reactor can accomplish impressive carbon capture results without requiring a massive investment into infrastructure like current CO₂ processing plants. As such, this solution is better suited for today’s economy.

Ren

One of the biggest benefits that the PSE reactor brings to the market is its clean processing capabilities. The report demonstrated how it can separate CO₂ without leaving any waste byproducts. These results show that the new method provides high sustainability.

Flexibilitet

The PSE reactor was tested across different environmental conditions to see how it affected performance. The reactor was found to have superior adaptability to different cathode and anode reactions, making it the ideal solution for CO₂ direct air capture in most scenarios.

Integration

Integrating most CO₂ capture methods is a painstaking process. This new approach will reduce integration times by eliminating the need for heat or chemicals. The all-electric generator is much easier to introduce into business systems than its predecessors, opening the door for high adoption rates.

Forskare

Rice University researchers Xiao Zhang, Zhiwei Fang, Peng Zhu, Yang Xia, and Haotian Wang spearheaded the project. Notably, Wang has worked in the decarbonization process for years. Now, the team intends to expand their testing to see how it handles industrial-scale operations.

Företag som kan dra nytta av forskningsstudien om direktluftkoldioxidinfångning

The carbon capture space continues to expand and interest in firms operating within the market has grown. The combination of more frequent natural disasters and renewed interest by legislators seeking to introduce environmental-centric laws like carbon tax has led to unique opportunities for companies positioned properly.

NET Power Inc

NPWR Prisdiagram

North Carolina-based renewable energies firm, NET Power Inc (NPWR ) was founded in 2010 to create an electrical energy turbine that didn’t produce any air emissions. The company succeeded in its task thanks to support from various strategic investors and researchers. Today, it is one of the premier providers of high-pressure supercritical CO₂-powered turbines.

These devices recirculate CO₂ emissions to lower operation costs and eliminate air pollution. The project has been a major success and is seen by many as a crucial step in preparation for the growing electrical demands AI systems have put on the grid.

NET Power Inc. is backed by Occidental, Baker Hughes (BKR ), Constellation, and SK Group. This network, in coordination with its innovative approach to energy generation, makes NET Power Inc. stock a smart acquisition for traders seeking access to the clean energy sector.

Aker Carbon Capture

Aker Carbon Capture is a primer supplier of commercial CO₂ capture devices. The project launched in augusti 2020 and is a subsidiary of the Aker Horizons investment company. This investment firm focuses on launching clean tech companies with the potential to revolutionize the market.

Notably, Aker Carbon Capture has seen some ups and downs. The project was awarded the first carbon capture and storage constraints for a cement facility in the world. In augusti 2024, it became the first company to achieve a contract to design and integrate a large-scale carbon capture plant servicing a pulp and paper facility in the US.

Aker Carbon Capture stock, which is only available OTC, saw a steady decrease over the last few years. However, its recent 3rd quarter earnings showed the firm holds NOK 4.5 billion in cash and a solid equity position at NOK 5.5 billion.

This growth was driven by a strategic partnership with SLB, resulting in the creation of SLB Capture. Analysts see this partnership as a “buy” signal for ACC.OL, which is wisely positioned for growth in the carbon capture economy.

Förbättringar i tekniken för direktluftinfångning kan driva den gröna ekonomin

When you examine the advantages of direct air carbon capture when used alongside renewable energies and practices, it’s easy to see why many believe this is the best approach to prevent climate meltdown. This latest research takes the CO₂ capture process forward, making it possible to introduce CO₂ capturing devices on an entirely new scale. As such, the technology is ready for the next step in testing followed by deployment.

Läs om andra spännande miljöprojekt idag.

Studierreferens:

^{1. Zhang, X., Fang, Z., Zhu, P., et al. (2025). Elektro‑kemisk regenerering av högren CO₂ från (bi)karbonater i en porös fast elektrolytreaktor för effektiv koldioxidinfångning. Nature Energy, 10(1), 55–65. https://doi.org/10.1038/s41560-024-01654-z}