Resources about methane mitigation
A 2025 field demonstration published in ACS ES&T Air showed that the Methane Eradication Photochemical System (MEPS) effectively mitigates dilute methane, ammonia, and odor from agricultural ventilation air. Utilizing UV light and in-situ generated chlorine to accelerate oxidation, the technology achieved removal efficiencies of 98% for methane (at 33 ppm), 94% for ammonia, and 80% for hydrogen sulfide. Ambient Carbon’s MEPS technology represents a breakthrough for reducing agricultural climate and environmental impacts, particularly from livestock barns and biogas facilities.
The National Academy’s 2024 report outlines a strategic framework for developing technologies that oxidize or capture atmospheric methane to mitigate climate change, specifically targeting the reduction of peak warming by acting on its short 9-12 year atmospheric lifetime. The research agenda prioritizes five key areas: understanding natural methane sources and sinks, developing innovative removal technologies for low-concentration environments, establishing robust measurement and verification systems, assessing potential ecological and societal risks, and identifying opportunities to utilize captured methane. The report mentions Ambient Carbon’s MEPS as a promising early technology.
The United Nations Environment Programme (UNEP) recently released a report on methane emissions, building on the Global Methane Assessment of 2021. Methane, a potent greenhouse gas, plays a critical role in accelerating climate change, with a far greater short-term warming effect than carbon dioxide. The report analyzes future methane emissions if no additional action is taken, and compares this with the potential impact of the Global Methane Pledge, which aims to reduce global methane emissions by at least 30% by 2030. This analysis highlights the urgency of acting now to mitigate methane emissions and underscores the significant climate benefits of early and focused intervention.
A recent research article highlights the importance of controlling methane emissions at their source to reduce short-term global warming. Methane, a potent greenhouse gas, has a high radiative forcing but a relatively short atmospheric lifetime, meaning that reducing its concentration can have immediate climate benefits. The study introduces a new framework to estimate methane emissions at various concentrations and evaluates technologies that could oxidize methane into less harmful substances. By targeting methane concentrations at their highest levels, these technologies could lower global temperatures by up to 0.4°C, offering a powerful tool for mitigating climate change.
A recent study explores the significant physical and practical challenges of developing technologies to remove methane from the atmosphere. While these technologies have the potential to mitigate climate change, they are still in early development, and the study assesses the limitations of three approaches: two- and three-dimensional infrastructure and enhancing atmospheric oxidation. The findings highlight the immense scale needed to remove even small amounts of methane, with current technologies requiring vast areas or volumes to be effective. Additionally, enhancing atmospheric oxidation faces environmental concerns. The research underscores the need to overcome these constraints to make methane removal a viable climate solution.
A new study introduces an innovative approach for efficiently removing methane from low-concentration emissions, such as those from wastewater treatment, livestock production, and biogas facilities. Methane, a potent greenhouse gas, is often difficult to eradicate from waste air at low concentrations with existing methods. The research presents the first successful results of the methane eradication photochemical system (MEPS), which uses chlorine atoms in a gas-phase reaction to achieve high removal efficiency. The prototype achieved a 58% removal rate, showing promising potential for cost-effective methane reduction. With further improvements, MEPS could become a valuable tool in combating low-concentration methane emissions and mitigating climate change.