Negative Emissions Technologies and Science
Negative emission is the key to reach various climate goals such a net zero greenhouse gas (GHG) economy by 2050. Carbon dioxide removal technologies are primarily aimed to address the climate change impact from the sectors that are hard to decarbonize. SEES develops and enables strategies for carbon dioxide removal and conducts research and development on negative emissions technologies.
Direct Air Capture
Direct air capture (DAC) refers to extracting carbon dioxide (CO2) directly from the atmosphere, which can later be either permanently stored or utilized by downstream applications. Our direct air capture projects include the co-development of novel DAC materials and systems to meet the100 $/tonne CO2 capture target. We perform market analysis of waste heat availability for powering DAC, as well as performing techno-economic and engineering analyses of integrating DAC into industry and energy infrastructure.
- Market analysis of waste heat availability for powering direct air capture (DAC)
- Techno-economic analysis (TEA) and engineering analysis of integrating DAC into industry and energy infrastructure
- Co-development of novel materials and systems for DAC that can meeting $100/ton CO2
Biological CCUS is a promising carbon removal technique as it uses biomass to capture CO2 or combine biomass growth and treatment with CO2 removal. The CO2 is then further transformed to permanent storage. Ideally it can eliminate or diminish the use of fossil energy, which increases its chance to become carbon negative. We use TEA and Life Cycle Assessment (LCA) for developing net negative bioenergy technologies, applying biochar to marginal lands, and capturing CO2 at ethanol facilities.
- TEA and Life Cycle Assessment (LCA) of developing net negative bioenergy technologies
- LCA of applying biochar to marginal lands
- TEA and LCA of capturing CO2 at ethanol facilities
Carbon Dioxide Utilization
After removing CO2 from the atmosphere or processes, one important question is how to deal with the captured CO2. Here, we use TEA and engineering models to assess the prospects of turning CO2 and biomethane into useful products using electrochemical pathways. We also co-develop novel materials and systems for bulk transportation of CO2 to different utilization facilities.
- TEA and engineering modeling of electrochemical pathways for converting CO2 and biomethane into products
- Co-development of novel materials and systems for bulk CO2 transportation
Carbon dioxide sequestration
Besides utilization, sequestration of CO2 is considered essential to essential decarbonization as it provides a relatively permanent storage option for large quantity of carbon. Here, we provide TEA and roadmapping suggestion of using enhanced weathering of natural materials and industrial wastes to permanently sequestrate CO2. We also evaluate the impacts of geological CO2 sequestration, and provide TEA and engineering analysis for transforming CO2 into solid carbon for sequestration.
- Roadmapping and TEA of the enhanced weathering of natural materials and industrial wastes for permanent CO2 sequestration
- Evaluation of impacts of geological CO2 sequestration
- TEA and engineering analysis of transforming CO2 into solid carbon