A Combined Chemical-Electrochemical Process to Capture CO2 and Produce Hydrogen and Electricity
| Autor: | Jorge Federico Gabitto, John Attia, Shuza Binzaid, Nabila Shamim |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
Work (thermodynamics) Control and Optimization Materials science Hydrogen Energy Engineering and Power Technology Ionic bonding chemistry.chemical_element Carbon sequestration Electrochemistry Chemical reaction Electrochemical cell chemistry.chemical_compound process intensification Electrical and Electronic Engineering Process engineering Engineering (miscellaneous) Renewable Energy Sustainability and the Environment business.industry electrochemical cell chemistry hydrogen CO2 absorption Carbon dioxide business Energy (miscellaneous) |
| Zdroj: | Energies, Vol 14, Iss 5807, p 5807 (2021) Energies Volume 14 Issue 18 |
| ISSN: | 1996-1073 |
| DOI: | 10.3390/en14185807 |
| Popis: | Several carbon sequestration technologies have been proposed to utilize carbon dioxide (CO2) to produce energy and chemical compounds. However, feasible technologies have not been adopted due to the low efficiency conversion rate and high-energy requirements. Process intensification increases the process productivity and efficiency by combining chemical reactions and separation operations. In this work, we present a model of a chemical-electrochemical cyclical process that can capture carbon dioxide as a bicarbonate salt. The proposed process also produces hydrogen and electrical energy. Carbon capture is enhanced by the reaction at the cathode that displaces the equilibrium into bicarbonate production. Literature data show that the cyclic process can produce stable operation for long times by preserving ionic balance using a suitable ionic membrane that regulates ionic flows between the two half-cells. Numerical simulations have validated the proof of concept. The proposed process could serve as a novel CO2 sequestration technology while producing electrical energy and hydrogen. |
| Databáze: | OpenAIRE |
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