NDLI: Amine versus ammonia absorption of CO2 as a measure of reducing GHG emission: a critical analysis

Content Provider	Springer Nature Link
Author	Bandyopadhyay, Amitava
Copyright Year	2010
Abstract	Carbon dioxide (CO2), one of the green house gases (GHGs) is well known for more than a century. Its emission from the combustion of fossil fuels in addition to other industrial sources is adversely affecting the climate on earth. Climate change is emerging as a risk all over the world that has generated public concern. Estimates have indicated that power production contributes to the tune of 70% of the total CO2 released into the atmosphere from fossil fuel combustion worldwide. Capturing and securely storing CO2 from the global combustion systems thus constitutes an important and achievable target. A legion of researchers have thus far developed absorbents to remove CO2 from combustion facilities that are currently recognized globally as most effective. The cost of capturing CO2 can be reduced by finding a low-cost solvent that can minimize energy requirements, equipment size, and corrosion. Monoethanolamine is being used for removing CO2 from the exhaust streams and is a subject inculcated over a period of about last 80 odd years. Host of such other amines are being investigated and put into practice. However, commercializations of such operating plants for capturing CO2 from power plants in the world are few and far between. On the other hand, aqueous ammonia is the other chemical solvent for capturing CO2 that has proven experimentally to be more effective than amine-based processes. This communication aims at critically elucidating relative merits and demerits of ammonia and amine-based CO2 capture options from the exhausts of coal fired thermal power plants (TPPs). It includes the life cycle CO2 emissions for both the processes. Finally, it is estimated that a total emission of about 152 Mt CO2-equivalent could occur after use of 100 Mt ammonium bicarbonate (NH4HCO3) as synthetic N-fertilizer that is about 50% of the total CO2 captured (315 Mt) for producing the fertilizer, NH4HCO3. Clearly, this estimate demonstrates that the synthetic N-fertilizer, NH4HCO3, produced by NH3 scrubbing of CO2 from fossil fuel (e.g., coal) fired TPP could have a significant beneficial environmental impact so far as GHG emission is concerned.
Starting Page	269
Ending Page	294
Page Count	26
File Format	PDF
ISSN	1618954X
Journal	Clean Technologies and Environmental Policy
Volume Number	13
Issue Number	2
e-ISSN	16189558
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-05-26
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Absorption Ammonia Ammonium bicarbonate Carbon dioxide CO2 capture Green house gas Monoethanolamine Industrial Chemistry/Chemical Engineering Environmental Economics Environmental Engineering/Biotechnology Industrial and Production Engineering Sustainable Development
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Environmental Engineering Economics and Econometrics Business, Management and Accounting Management, Monitoring, Policy and Law

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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