Open AccessHarvesting Electrical Power during Carbon Capture using Various Amine Solvents
Author(s) -
Trevor J. Kalkus,
Caitlin J. Shanahan,
Jansie Smart,
Ali Coskun,
Michael Mayer
Publication year - 2022
Publication title -
energy and fuels
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.861
H-Index - 186
eISSN - 1520-5029
pISSN - 0887-0624
DOI - 10.1021/acs.energyfuels.2c02279
Subject(s) - amine gas treating , carbon fibers , chemistry , chemical engineering , electric power , environmental science , power (physics) , materials science , process engineering , environmental chemistry , organic chemistry , thermodynamics , physics , composite material , engineering , composite number
There exists an urgent demand for the advancement of technologies that reduce and capture carbon dioxide (CO 2 ) emissions to mitigate anthropogenic contributions to climate change. This paper compares the maximum power densities achieved from the combination of reverse electrodialysis (RED) with carbon capture (CC) using various CC solvents. Carbon capture reverse electrodialysis (CCRED) harvests energy from the salinity gradients generated from the reaction of CO 2 with specific solvents, generally amines. To eliminate the requirement of freshwater as an external resource, we took advantage of a semiclosed system that would allow the inputs to be industrial emissions and heat and the outputs to be electrical power, clean emissions, and captured CO 2 . We assessed the power density that can be attained using CCRED with five commonly studied CC solvents: monoethanolamine (MEA), diethanolamine (DEA), N -methyldiethanolamine (MDEA), 2-amino-2-methyl-2-propanol (AMP), and ammonia. We achieved the highest power density, 0.94 W m -2 cell -1 , using ammonia. This work provides a foundation for future iterations of CCRED that may help to incentivize adoption of CC technology.