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Steam Reactivation of Spent CaO-Based Sorbent for Multiple CO2 Capture Cycles
Abstract
This study examines steam reactivation of sorbent to improve the reversibility of multiple CaO-CO2 capture cycles. Experiments to obtain spent sorbent were performed in a tube furnace, and reactivation was achieved using steam in a pressurized reactor. Sorbent activity for CO2 capture was then tested in a thermogravimetric analyzer (TGA), in multi-cycle carbonation tests. After reactivation the sorbent had even better characteristics for CO2 capture than that of the natural sorbent. The average carbonation degree over 10 cycles for the reactivated sorbent approached 70%, significantly higher than for the original sorbent (35-40%). This means that the same sorbent may achieve effective CO2 capture over a large number of cycles, in the absence of other phenomena such as attrition. Partially sulfated sorbents may also be reactivated, but hydration itself is also hindered by sulfation.
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Metadata
- Authors
- Manovic, V., & Anthony, E. J.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2007-01-20
- Volume
- 41
- Issue
- 4
- Pages
- 1420-1425
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2000233742
- Cited by
- 309
- References
- 0
- FWCI
- 49.11
- Type
- journal article
- Language
- en
- Open access
- closed
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