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Sustainable Circulating Energy System for Carbon Capture Usage and Storage (CCUS)

Kenji Sorimachi^1,2,*, Toshinori Tsukada³, Hossam A. Gabbar⁴

1 The Room of Emeritus Professor, Dokkyo Medical University, Mibu, Tochigi, 321-0293, Japan
2 Bioscience Laboratory, Environmental Engineering Co., Ltd., Takasaki, Gunma, 370-0041, Japan
3 The President Office, KSI, Takasaki, Gunma, 370-1201, Japan
4 Department of Energy and Nuclear Engineering, Faculty of Engineering and Applied Science, Ontario Tech University, Oshawa, ON L1H 7K4, Canada

* Corresponding Author: Kenji Sorimachi. Email:

(This article belongs to the Special Issue: Innovative Approaches in Clean Energy Systems: Integration, Sustainability, and Policy Impact of Renewable Energy)

Energy Engineering 2025, 122(6), 2177-2185. https://doi.org/10.32604/ee.2025.064975

Received 28 February 2025; Accepted 30 April 2025; Issue published 29 May 2025

Abstract

Recently, we developed an innovative CO₂ capture and storage method based on simple chemical reactions using NaOH and CaCl₂. In this technology, it was newly found that the addition of CO₂ gas produced CaCO₃ (limestone) in the solution of NaOH and CaCl₂ at less than 0.2 N NaOH, while at more than 0.2 N NaOH, Ca(OH)₂ formation occurred merely without CO₂. The present study has been designed to develop an integrated system in which the electrolysis unit is combined with the CO₂ fixation unit. As the electrolysis of NaCl produces simultaneously not only electricity but also H₂ and Cl₂, the produced H₂ 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 CO₂ 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 CO₂ fixing system with the incinerator without environmental concerns along with both H₂ and CaCO₃ productions. Thus, our simple technology must contribute immediately and economically to disaster recovery.

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