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Bipolar membrane electrolyzer for sodium hypochlorite generation
 
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1
Centro de Investigación de Ingeniería de Procesos de Tratamiento de Aguas, Facultad de Ingeniería Química, Universidad Nacional del Callao, Juan Pablo II 306 Avenue, Bellavista 07011, Perú
 
2
Facultad de Ingeniería Química, Universidad Nacional Pedro Ruiz Gallo, Lambayeque, Calle Juan XXIII 391, Lambayeque 14013, Perú
 
 
Corresponding author
Juan Taumaturgo Medina Collana   

Centro de Investigación de Ingeniería de Procesos de Tratamiento de Aguas, Facultad de Ingeniería Química, Universidad Nacional del Callao, Juan Pablo II 306 Avenue, Bellavista 07011, Perú
 
 
Ecol. Eng. Environ. Technol. 2025; 2:230-238
 
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ABSTRACT
The objective of this research work has been the construction and evaluation of a laboratory scale electrolytic cell using a bipolar membrane for the production of sodium hypochlorite. The dependence of the cell operation factors on the sodium hypochlorite concentration and specific energy consumption was evaluated, using sodium chloride solutions previously prepared in the laboratory; the experiments were carried out following a factorial design with three levels (3, 4 and 5 V) for the electrical potential and sodium chloride concentration (10 and 30 g/L), maintaining a constant electrolysis time of 120 min and recirculation flow of the solutions in both compartments at 350 mL/min. The results showed that the achieved sodium hypochlorite concentration is in the range of (540 -1040 mg/L) and power consumption (2.1- 5.35 kW/kg of NaClO). The sodium hypochlorite concentration and energy consumption were strongly affected by the electrical potential applied to the cell as the voltage increased from 3 to 5 V. In conclusion, this research reveals that this is a promising technology, especially if low concentrations of sodium hypochlorite are used.
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