A comparative review between amines and ammonia as sorptive media for post-combustion CO2 capture

Farid Shakerian, Ki-Hyun Kim, Jan E. Szulejko and Jae-Woo Park

Applied Energy, 2015, vol. 148, issue C, 10-22

Abstract: In recent decades, the accelerating economic and social developments have led to exponentially increasing emissions of carbon dioxide (CO2) into the atmosphere. As a result, much research efforts have been directed toward more effective measures for the carbon capture and storage (CCS). In this review, we first briefly described the general background on the various techniques available for the abatement of CO2 emissions worldwide. Then, we provided an in-depth discussion regarding the two comparable control technologies, i.e., the amine- vs. ammonia-based capture approaches; ammonia has lower energy costs than monoethanolamine (MEA). The applicability of each method was described further with an emphasis on their advantages and disadvantages. We also briefly discussed the available options for post-absorption processing such as recovery of absorbed CO2, compression, and storage. Many immobilized amines as adsorbents can only be regenerated a few times or are a ‘once-through process’. This may deplete the global supply of those materials if CCS is scaled up in excess of Mton CO2 captured per year. Ideally, the captured CO2 should be isolated from the atmosphere indefinitely and/or photochemically reduced (either biologically or industrially). Finally, we explored future challenges in this field of study to envision and suggest more optimized solutions.

Keywords: CO2 capture; Amine; Ammonia; Global warming; Greenhouse gas (search for similar items in EconPapers)
Date: 2015
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Citations: View citations in EconPapers (43)

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DOI: 10.1016/j.apenergy.2015.03.026

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