@Article{ee.2025.064975,
AUTHOR = {Kenji Sorimachi, Toshinori Tsukada, Hossam A. Gabbar},
TITLE = {Sustainable Circulating Energy System for Carbon Capture Usage and Storage (CCUS)},
JOURNAL = {Energy Engineering},
VOLUME = {122},
YEAR = {2025},
NUMBER = {6},
PAGES = {2177--2185},
URL = {http://www.techscience.com/energy/v122n6/61367},
ISSN = {1546-0118},
ABSTRACT = {Recently, we developed an innovative CO<sub>2</sub> capture and storage method based on simple chemical reactions using NaOH and CaCl<sub>2</sub>. In this technology, it was newly found that the addition of CO<sub>2</sub> gas produced CaCO<sub>3</sub> (limestone) in the solution of NaOH and CaCl<sub>2</sub> at less than 0.2 N NaOH, while at more than 0.2 N NaOH, Ca(OH)<sub>2</sub> formation occurred merely without CO<sub>2</sub>. The present study has been designed to develop an integrated system in which the electrolysis unit is combined with the CO<sub>2</sub> fixation unit. As the electrolysis of NaCl produces simultaneously not only electricity but also H<sub>2</sub> and Cl<sub>2</sub>, the produced H<sub>2</sub> could be supplied to the hydrogen generator to produce further electricity, which could be used for the initial NaCl electrolysis for NaOH production. Contrarily, the combination of incinerators with electrolytic generators has already been established to supply electricity, as thermal power plants use coals or wastes. This electricity-providing unit could be replaced with a solar panel plant or with a storage buttery. The present integrated system, consisting of various electricity-providing methods and CO<sub>2</sub> fixation units, is a sustainable circulating energy system and carbon capture, usage, and storage (CCUS) system without environmental concerns. In addition, an unexpected-tremendous amount of the burned wood, which was produced by the big mountain or forest fires, could be disposed of by our integrated CO<sub>2</sub> fixing system with the incinerator without environmental concerns along with both H<sub>2</sub> and CaCO<sub>3</sub> productions. Thus, our simple technology must contribute immediately and economically to disaster recovery.},
DOI = {10.32604/ee.2025.064975}
}