[01] Domga, Department of Applied Chemistry, National School of Agro-industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon. [02] Richard Domga, Department of Applied Chemistry, National School of Agro-industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon. [03] Guy Bertrand Noumi, Department of Chemistry, Faculty of Science, University of Ngaoundere, Ngaoundere, Cameroon. [04] Jean Bosco Tchatchueng, Department of Applied Chemistry, National School of Agro-industrial Sciences, University of Ngaoundere, Ngaoundere, Cameroon.

This work reports the most important parameters during brine electrolysis. Herein, cells design was built and optimized for chlorine and hydrogen production using graphite electrodes. These electrodes were from recycling batteries. Also, a series of experiments were conducted in order to test the effect of the space between the electrodes on minimal cell voltage. The results clearly show that when the space between the electrodes decreases, the cell voltage decreases too. Thus, the optimum value was 0.75 cm and the minimum cell voltage with this gaps was 2.83V. Likewise, the effects of some operating parameters like electrolytes concentration and temperature on conductivity were studied. The optimum conditions for brine electrolysis were 320 g.L^-1 NaCl (pH=2), 24% NaOH, T = 80°C. To express the efficiency of electrochemical reactions, two types of current efficiency were calculated based on Faraday’s law of electrolysis. The current efficiencies were 81% and 83% respectively for chlorine and hydrogen production.

Electrolysis, Current Efficiency, Conductivity, Chlorine, Hydrogen, Electrodes

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