Background The Intergovernmental Panel on Climate Change (IPCC) emphasizes the urgent need to remove CO2 from the atmosphere by the end of the century to limit global warming to below 2 °C. Direct Air Capture (DAC) is essential in all scenarios to meet this target, requiring the removal of about 1,000 gigatons of CO2. DAC systems use chemical sorbents...

Background The Center for Negative Carbon Emissions at Arizona State University is actively engaged in research focused on sorbent materials used in direct air capture of carbon dioxide. Much of this research centers on understanding the chemical and physical properties of these materials and how they influence direct air capture performance. Carbon...

Background The field of carbon dioxide (CO2) capture is rapidly growing due to an increasing need to effectively remove CO2 from the atmosphere. New technologies are currently being developed to target CO2 in various types of sources. One particular method of CO2 capture that has gained traction in recent years is membrane-based separation, which is...

Background The conversion of solar energy to fuels requires both water (H2O) and carbon dioxide (CO2) as feedstocks. These feedstocks provide the carbon and hydrogen atoms necessary to form hydrocarbons. By removing oxygen from one or both of these compounds, liquid hydrocarbon fuels can be produced. Water can be converted into hydrogen and oxygen...

Background The removal of CO2 from the atmosphere through direct air capture (DAC) can help to stabilize the planet’s climate. There is a need for large-scale negative emission systems as more CO2 will need to be captured and stored in the future. There are existing DAC systems for carbon capture using airflow, which can use large fans to bring...

Background Carbon dioxide (CO2) removal from the atmosphere is a critical factor in mitigating climate change. There are many current technologies being used for CO2 capture, including CO2 removal technologies from ambient air. These technologies typically use sorbent materials or mechanisms that involve laminar flow of air, which can sometimes provide...

Background Carbon dioxide (CO2) emissions are a leading cause of climate change. The removal of CO2 from the atmosphere is a critical factor in mitigating climate change. Passive direct air capture of CO2 is an effective technique for the reduction of CO2 as it reduces the resources required and can easily be integrated with existing systems. There...

Background Carbon dioxide removal (CDR) methods from atmospheric air, including direct air capture (DAC), is essential to limit the spread of global warming. However, current DAC approaches based on thermal and pressure swings are very energy intensive. Moisture-driven DAC using strong-base anion exchange resins (AER) reversibly binds CO2 from ambient...

Background Carbon dioxide removal (CDR) from atmospheric air, which includes direct air capture (DAC), is essential to limit global warming to 2°C, or ideally 1.5°C. Current DAC methods based on thermal and pressure swings remain too energy intensive. Moisture-driven DAC using strong-base anion exchange resins (AER) binds CO2 from ambient air...

Background Carbon dioxide (CO2) capture technology has the potential to alleviate greenhouse gas emissions and mitigate climate change. There are several types of technology that are currently being used to capture and store CO2 such as Direct Air Capture (DAC), power plants, enhanced rock weathering (ERW), etc. Carbon capture technologies are typically...