Coupled CO2 absorption and mineralization with low-concentration monoethanolamine

Weifeng Zhang, Yuanlong Xu and Qiuhua Wang

Energy, 2022, vol. 241, issue C

Abstract: The high energy-consumption of Carbon Capture Utilization and Storage (CCUS) promote the study of coupled CO2 absorption and mineralization technology. CO2 absorption and mineralization are coupled into one step in mixed slurry of Ca(OH)2 and amine. And CO2 is mineralized to CaCO3 in normal temperature and pressure. The aqueous amine, such as monoethanolamine (MEA), is used as a capture intermediate to accelerate the absorption and mineralization. In this study, effects of concentration of MEA, reaction temperatures and concentrations of Ca(OH)2 are investigated. Furthermore, the performance of cyclic utilization of aqueous MEA is tested. The results demonstrate that in the coupled reaction CO2 capture capacity (0.98 mol CO2/L) is achieved in 0.05 mol/L MEA at 20 °C with 1 mol/L Ca(OH)2. The major polymorph of CaCO3 in the reaction is calcite, and the morphology is chain-like crystals. After ten cyclic utilization experiments, the extent of mineralization of CO2 with aqueous MEA is 78.38%. These results illustrate that the coupled absorption and mineralization technology can effectively capture and mineralize CO2 and reduce the energy consumption of CCUS.

Keywords: Coupled absorption and mineralization; Low energy consumption; CO2 utilization; Amine (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544221027730
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:241:y:2022:i:c:s0360544221027730

DOI: 10.1016/j.energy.2021.122524

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().