Carbon dioxide (CO2) capture is marking a turning point in the fight against climate change and the transformation of industry. From being merely a technical issue, it has become part of the debate on the circular economy, new technologies, and business innovation, and requires coordination among public bodies, companies, and research centers.
While direct emissions reduction remains a priority, carbon capture is becoming a key complementary strategy in sectors where decarbonization is particularly challenging. The challenge now lies in maximizing its efficiency and economic viability, integrating it into sustainable value chains, and, above all, preventing it from becoming an excuse to perpetuate unsustainable models.
CO2 capture technologies: advances and challenges
The development of methods for capturing CO2 relies on systems ranging from its use in industrial processes to innovations in materials. Post-combustion capture allows for the treatment of waste gases from existing facilities, separating CO2 from nitrogen, and is particularly widespread in the cement, steel, and energy industries. Meanwhile, direct air capture (DAC) and direct seawater capture (DOC) are emerging as solutions for removing atmospheric CO2, although their costs are still high.
One of the biggest challenges of these technologies is the energy consumption associated with the process and the safe transport and storage of the captured carbon. Some countries, such as Norway and the Netherlands, have advanced infrastructure for geological storage, while in others, social acceptance and legal barriers slow down these projects.
Advanced Materials: The Rise of MOFs in CO2 Capture
A significant leap in efficiency is provided by metal-organic frameworks (MOFs) , materials with nanoscale internal cavities capable of adsorbing large quantities of gases. MOFs can be custom-designed to selectively capture CO2, outperforming traditional materials. Advances in synthesis techniques and collaboration between startups and large industries have reduced costs and scaled up MOF production, with strong market growth prospects.
Prominent examples include the MOF CALF-20, which is resistant to moisture and effective even under complex industrial conditions. The integration of artificial intelligence streamlines the discovery of new variants, optimizing their properties and accelerating their implementation.
Efficient regeneration of materials to release captured CO2 has been achieved using light- or magnetic-field-based methods, reducing energy consumption by up to 80% compared to conventional solutions. This accelerates the adoption of MOFs in industrial applications and gives them a leading role in the fight against emissions.
Circular economy: from industrial CO2 to food production
Captured carbon is no longer just waste: new projects demonstrate that CO2 can be transformed into a useful resource in a circular economy model. In Norway, the metalworking company Finnfjord AS captures approximately 300.000 tons of CO2 annually and uses it to cultivate microalgae. These algae, incorporated into salmon feed, not only reduce the carbon footprint of aquaculture but also provide essential omega-3 fatty acids and improve fish health, even reducing common parasites.
These pioneering initiatives demonstrate that the biotechnological valorization of CO2 is viable and scalable, enabling emissions reductions to translate into economic and social opportunities. Public financial support and international collaboration are driving the development and optimization of these solutions, which aim for a profound transformation of the production system.
Corporate commitment and transparency in CO2 management
Leading companies in the energy, chemical, and metallurgical sectors place the management and reduction of their carbon footprint at the heart of their sustainability strategy. Official certifications such as the "Calculo" seal from the Ministry for Ecological Transition validate their genuine efforts in monitoring and reducing emissions, guaranteeing the seriousness of their commitments to customers and society.
The certification process requires rigorous calculations and validation by independent authorities, which increases trust and transparency in business practices. Organizations such as Hafesa and Tubacex have taken steps forward in this regard, integrating CO2 capture and offset actions and strengthening their position in an increasingly environmentally demanding market.
Carbon capture is establishing itself as a strategic technology , both for reducing emissions and for generating new industrial opportunities and advancing towards a low-carbon economy. Its success will depend on its integration with other efficiency and renewable energy initiatives, the rigorous application of environmental criteria, and the consolidation of circular and transparent business models.
