On the use of chlor-alkali technology to power environmental electrochemical treatment technologies

This review tries to differ from the existing reviews on the potential of chlor-alkali technology in regulating energy for environmental remediation through hydrogen-based storage. Currently, green energies are at a very high technology readiness level, but fitting the demand and production of energ...

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Detalles Bibliográficos
Autores: Requena Leal, Iñaki, Carvela Soler, Mireya, Fernández Marchante, Carmen María, Lobato Bajo, Justo, Rodrigo Rodrigo, Manuel Andrés
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universidad de Castilla-La Mancha
Repositorio:RUIdeRA. Repositorio Institucional de la UCLM
OAI Identifier:oai:ruidera.uclm.es:10578/36270
Acceso en línea:https://doi.org/10.1016/j.coelec.2024.101461
https://hdl.handle.net/10578/36270
Access Level:acceso abierto
Palabra clave:Chlor-alkali
Environmental electrochemistry
Gas–liquid cells
Hydrogen storage
Reversible electrochemical cells
Descripción
Sumario:This review tries to differ from the existing reviews on the potential of chlor-alkali technology in regulating energy for environmental remediation through hydrogen-based storage. Currently, green energies are at a very high technology readiness level, but fitting the demand and production of energy is not a solved issue. Direct application in environmental treatments is inefficient, particularly in electrokinetic environment because of reversibility. Hydrogen-based energy storage shows promise, despite water management challenges in electrolyzers, especially in drought-prone regions like the Mediterranean countries. This review suggests adapting chlor-alkali technology from industrial to environmental contexts as a less water-demanding alternative. It also shows the adaptability of electrolyzers, contrasting it with the challenges faced by fuel cells due to chlorine's corrosive effects. It concludes that the sustainable solution proposed involves synergistic chlor-alkali electrolysis and proton exchange membrane (PEM) fuel cells using oxygen instead of chlorine, benefiting the industry affected by electricity price increase. Byproducts like chlorine and caustic soda can be repurposed for environmental or commercial purposes.