Article

Scientists have developed a new low-energy CO2 capture method using an isotherm process, reducing heat requirements for direct air capture (DAC) technology by nearly two-thirds. Traditional DAC systems require high temperatures around 100 °C to release concentrated CO2, leading to high operational costs.

The new method employs a controlled, low-humidity CO2 purge at ambient temperature, allowing for isothermal release of captured CO2, which decreases energy consumption to just 36% of what is needed in conventional systems. This innovation could significantly lower the cost per tonne of captured CO2, making DAC more economically viable and attractive for investment.

The technology's compatibility with renewable energy sources enhances its sustainability. However, challenges remain in scaling up the system for commercial deployment, requiring engineering advancements and supportive policy frameworks to establish a market for captured carbon.