RT Journal Article
T1 Simultaneous electrodialytic recovery of HCl and LiOH from LiCl: Modeling, optimization and experimental validation
A1 Cerrillo-González, María del Mar
A1 Casaburo, Raffaele
A1 Luciani, Giuseppina
A1 Paz-García, Juan Manuel
A1 Rodríguez-Maroto, José Miguel
A1 Villén-Guzmán, María Dolores
K1 Ingeniería química
K1 Baterías de acumuladores
K1 Electroquímica
AB The growing demand for lithium-ion batteries (LIBs) highlights the need for sustainable recycling technologies.Electro-electrodialysis (EED) has emerged as a promising alternative for regenerating chemical reagents andrecovering lithium-based salts from hydrometallurgical leachates. This study investigates the electrodialyticproduction of HCl and LiOH from LiCl solutions using a four compartment EED cell. A mathematical model wasdeveloped to describe ions transports, acid and base regeneration and energy consumption, incorporatingelectrochemical and mass transport parameters. The model was validated through five batch-mode EED experiments under different operating conditions. Experimental results validated the model’s accuracy in predictingthe concentrations of Li+, Cl− , H+ and OH− over time, as well as the voltage and specific energy consumption,with R2 values above 0.99. The optimal performance was achieved under conditions of high initial LiOH concentration (0.5 M) and low electrode distance (8 cm), which minimized the energy consumption while maintaining high product yields. Conversely, higher initial acid concentrations reduced ion recovery, likely due toincreased ionic competition and membrane transport resistance. Under the optimal conditions, specific energyconsumption reached value 8.3 kWh⋅kg− 1 HCl and 13.7 kWh⋅kg− 1 LiOH. The validated model provides a reliabletool for optimizing EED performance and reducing experimental effort. This work demonstrates the feasibility ofusing EED to selectively generate acid and base from LiCl-rich solutions and supports the development of moreefficient approaches for LIB recycling.
PB Elsevier
YR 2025
FD 2025
LK https://hdl.handle.net/10630/40479
UL https://hdl.handle.net/10630/40479
LA eng
NO Cerrillo-Gonzalez M del M, Casaburo R, Luciani G, Paz-Garcia JM, Rodriguez-Maroto JM, Villen-Guzman M. Simultaneous electrodialytic recovery of HCl and LiOH from LiCl: Modeling, optimization and experimental validation. Separation and Purification Technology. 2026;380(3):135426. https://doi.org/10.1016/j.seppur.2025.135426
NO Funding for open access charge: Universidad de Málaga/CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026