Abstract
The work aims to develop a method for producing NaClO by electrolysis of 20–25 g/L NaCl aqueous solution under conditions other than optimal, ensuring the maintenance of competitive technical and economic indicators of this product, primarily in terms of specific electric energy consumption. NaClO produced by electrolysis of a low concentration NaCl aqueous solution is used in the process of modifying zeolite with MnO2 by indirect electrochemical oxidation, where the mediator is the redox system NaCl – NaClO. Optimal conditions for producing NaClO by electrolysis of aqueous solution of 20–25 g/L NaCl are determined: concentration of available chlorine in the solution produced by electrolysis – 2.0–2.3 g/L; Anodic current density – 200–300 A/m2 ; Electrolyte temperature – 20–250C. Under these conditions, the available chlorine yield is 74.8–82.5%, and the specific electric energy consumption is 5.12–7.61 kWh/kg, which is equal to the value of a similar characteristic obtained under optimal industrial conditions.
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