In:
ECS Meeting Abstracts, The Electrochemical Society, Vol. MA2016-02, No. 41 ( 2016-09-01), p. 3098-3098
Abstract:
Today, global warming induced by green house gas (GHG) has been critical environmental issues. Among the direct GHGs, CO 2 is the major gas which largely contributes to global warming. It is an issue of great concern to develop the cost effective carbon dioxide capture technology. However, current CO 2 capture processes are becoming limited because these processes could not reached regeneration energy of 2.0 GJ/tCO 2 . Recently, it is reported that salinity gradient energy is one of most novel candidates for energy harvesting from CO 2 (Hamelers et al., Environ. Sci. Technol., 1, 31, 2014). Reverse electrodialysis (RED) salinity gradient energy is the renewable energy which using concentration gradient between two different sources. And the energy potential of CO 2 is larger than seawater in RED system. Therefore, we suggested the CO 2 capture associated RED power generation system (CO2RED) to dramatically reduce the regeneration energy. This CO 2 capture associated RED power generation technology is suggested for the first time. This proposed CO2RED system is possible to ensure the efficient power generation and economical CO 2 capture performance using the concentration difference between the CO 2 rich/lean solutions. We have make the lab-scale CO 2 associated RED system. The RED stack comprised of five cell pairs. Each cell pair contained an anion and cation exchange membranes, spacers, and gaskets. In this study, we introduced the CO 2 saturated absorbent to the RED system instead of seawater. As the results, CO2RED system achieved the power density of 0.8 W/m 2 . It was corresponded with 300 kJ/ton CO 2 absorbent. Furthermore, pH of CO 2 absorbent was changed from pH 7.9 to pH 8.4. It means that absorbed CO 2 was transported through anion exchange membranes and the RED system can help to regenerate CO 2 absorbent during the power generation. From this research, we have succeeded to obtain the core technology of CO 2 associated RED power generation system and confirmed the possibility of this suggested CO2RED system for power generation technology.
Type of Medium:
Online Resource
ISSN:
2151-2043
DOI:
10.1149/MA2016-02/41/3098
Language:
Unknown
Publisher:
The Electrochemical Society
Publication Date:
2016
detail.hit.zdb_id:
2438749-6
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