This study investigates the life cycle environmental impacts of options for integrating a solid amine-based DAC system with advanced algal biofuel production in photobioreactors (PBRs). DAC utilization allows the removal of atmospheric CO2 while also decoupling algae production facilities from anthropogenic point CO2 sources and avoiding the challenges of transporting CO2 long distances to remote facilities. Life cycle assessment is used to assess the environmental benefits of heat and mass integration between the DAC and the PBR for biofuel production. The analysis includes life cycle greenhouse gas emissions, water consumption, land use, criteria air pollutant emissions, and wastewater emissions. This presentation will discuss a range of options and will evaluate the potential for low carbon, sustainable biofuel through air capture of carbon dioxide.

Life cycle assessment of an integrated direct air capture system with advanced algal biofuel production

ACS Fall 2021

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