An Electrochemically-mediated Gas Separation Process for Carbon Abatement
Name
Stern-2013-An Electrochemically.pdf
Size
684.79 KB
Format
Adobe PDF
Checksum (MD5)
cf6eb8ae6941aac9866f49c90341bad7
Author(s)
Stern, Michael C.
Simeon, Fritz
Herzog, Howard J.
Hatton, Trevor Alan
Date Issued
August 2013
Journal
Energy Procedia
Publisher
Elsevier
Citation
Stern, Michael C., Fritz Simeon, Howard Herzog, and T. Alan Hatton. “An Electrochemically-Mediated Gas Separation Process for Carbon Abatement.” Energy Procedia 37 (2013): 1172–1179.
Version
Final published version
Abstract
This work describes a promising alternative to conventional thermal processes for absorber/desorber processing of for removal of CO[subscript 2] from flue gas streams at fossil fuel fired power plants. Our electrochemically-mediated amine regeneration (EMAR) process offers the advantages of an electrical system coupled with the desirable high output purities typical of amine sorbents that are difficult to achieve with most electric systems such as pressure-swing sorption, membrane separation, and oxy-fuel combustion. Preliminary experimental results are presented that demonstrate the feasibility of using ethylenediamine as the CO[subscript 2] sorbent and copper electro-cycling to isothermally modulate the amine affinity for CO[subscript 2]. Cupric ions entirely deactivate ethylenediamine at a ratio of 2:1 diamine to copper. Open-circuit potential measurements at 50°C indicate the required energy to desorb CO[subscript 2] and regenerate the ethylenediamine is 18 kJ/mole CO[subscript 2] under open-circuit conditions. Kinetic over-potentials are sufficiently low to ensure acceptable energy losses. Lower energies can be achieved by increasing the temperature or by changing the amine.
MIT Department
Massachusetts Institute of Technology. Department of Chemical Engineering
MIT Energy Initiative
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.egypro.2013.05.214
