The Circular Economy Opportunity Hidden in Carbon Capture Technology
By Lou Farrell
Industrial activity releases enormous amounts of carbon dioxide (CO₂), which is a leading contributor to rising global temperatures. Carbon capture technology can intercept some of that gas, and industries may reuse it in concrete, chemicals and fuels.
Treating carbon as an input rather than an emission is a key circular economy opportunity for this technology.
What Is Carbon Capture Technology?
Carbon capture technology collects CO₂ at its source or from the air through two main methods. Source-based systems focus on emissions from industrial facilities and power plants, while air-based systems capture CO₂ already in the atmosphere.
After collection, CO₂ is pressurized and transported via underground pipelines, ships, or trucks for storage or use. CO₂ can be pumped into underground rock formations and reservoirs so it can’t escape, or used to produce products like concrete, chemicals, or fuels.
When reused instead of stored, captured CO₂ enters a circular-economy model, serving as a raw material rather than waste.
This shift transforms carbon capture from a defensive climate strategy into an opportunity for industries to develop new products and revenue streams. With 2025 among the warmest years on record, carbon capture is a top sustainability priority.
Why Carbon Capture Is Important for Sustainability Goals
CO₂ is a heat-trapping greenhouse gas, so capturing it for storage or reuse is critical to tackling rising temperatures. Because CO₂ is estimated to account for about two-thirds of the temperature imbalance, reducing its concentration in ambient air is increasingly important.
Carbon capture can help. It captures CO₂ from facility exhaust before it adds to the current atmospheric level of 426.07 parts per million, addresses legacy carbon, and offsets emissions elsewhere in the economy.
According to the National Energy Technology Laboratory of the U.S. Department of Energy (DOE), solvent-based carbon capture systems have demonstrated capture rates above 95%, with ongoing research focused on validating these high removal rates for commercial-scale deployment.
The technology is also proving cost-effective in the right conditions. A study published in the journal Fuel found that capturing CO₂ from natural gas processing facilities, where emissions are already concentrated, can cost as little as $15 per metric ton.
Giving Captured Carbon Another Life
Captured CO₂ does not have to stay in storage indefinitely. The DOE supports turning captured CO₂ into fuels, chemicals, and construction materials.
Captured Carbon in Building Materials
Carbon mineralization converts CO₂ into minerals within concrete and other construction materials. During production, captured and liquefied CO₂ is injected into the mix along with water, cement, and aggregates such as sand and gravel.
The CO₂ then reacts chemically with calcium ions in the cement, transforming into a mineral. As a mineral, the CO₂ is chemically locked into the solid structure. It will not return to the atmosphere, even if the concrete is eventually demolished or recycled.
CarbonCure Technologies has used this mineralization technique to save more than 777,000 metric tons of CO₂ so far. This is equivalent to removing 181,000 gas-powered cars from the road for a year. The company continues to work toward its mission to achieve net-zero carbon emissions by 2040.
Fortera is another company that incorporates mineralization into its production process. At its Redding, California, plant, the company captures emissions from operations and converts the gas into ReAct, which contains 70% less CO₂. Fortera mineralizes 9,600 tons of CO₂ annually while producing 15,000 tons of ReAct cement.
Captured Carbon in Fuels and Chemicals
CO₂ can be converted into synthetic fuels or chemicals through two DOE-supported pathways.
First is the catalytic conversion pathway. Because CO₂ is a stable molecule, converting it requires catalysts that speed up reactions and steer them toward a particular product. Catalytic systems can be thermochemical, electrochemical, plasma-mediated, or hybrid, converting carbon into industrial chemicals.
This variety gives catalytic conversion the flexibility to adapt to different energy sources and feedstocks.
For example, Twelve, a California-based company, uses CO₂ electrolysis at its Moses Lake, Washington, facility to transform captured carbon into fuels and chemicals. Twelve’s eFuels can reduce greenhouse gas emissions by up to 90% compared to petroleum-based counterparts. The company has also raised over $900 million to scale its carbon-transformation technology across additional facilities.
Second is the biological conversion pathway. Instead of synthetic catalysts, biological conversion relies on microorganisms to absorb CO₂.
For example, special bacteria and archaea can metabolize CO₂ through fermentation and convert the gas directly into chemicals, acids, or bioplastics. Microalgae may also be cultivated to produce biomass that is then processed into chemicals, fuels or animal feeds.
LanzaTech uses gas fermentation to transform captured carbon into ethanol and other chemical building blocks. The company’s proprietary microbes consume carbon emissions much like yeast consumes sugar in brewing.
Across its commercial facilities, LanzaTech’s platform can abate 500,000 metric tons of CO₂ annually while producing up to 300,000 metric tons of ethanol.
Closing the Loop on Carbon’s Next Chapter
Carbon capture technology is proving that CO₂ can become a valuable resource rather than simply a by-product to manage. From mineralized concrete to catalytic fuels and biologically engineered chemicals, captured carbon is finding new life across industries.
As more companies adopt circular approaches, the line between emissions management and resource innovation continues to blur. If you’re exploring ways to reduce your organization’s footprint, consider how captured carbon technologies might fit into your sustainability strategy. The opportunity to close the loop is here.
Lou Farrell
Lou is the Senior Editor of sustainability and technology for Revolutionized Magazine. He has over 4 years of experience writing compelling articles on a range of topics, from energy-efficiency trends to eco-friendly construction. He loves to write, and is passionate about sharing his knowledge with others.
