Diseño e implementación de una celda electrolítica para la producción de hipoclorito de sodio en la empresa COSMOGREEN S.A.S Ubicada en la ciudad de Cúcuta.

Abstract

The objective of this degree work was to carry out the design and implementation of an electrolytic cell to obtain sodium hypochlorite at a concentration of approximately 4%, from the sodium chloride electrolysis to evaluate the applicability in the preparation of Some products of the Cosmogreen company, due to the fact that the current hypochlorite suppliers that the company has present difficulties in the delivery of the raw material, also reduce the risks of handling and transporting this disinfectant agent and finally, The possibility of producing hypochlorite directly in the areas of consumption implies a significant reduction in acquisition costs. Initially the investigation of the variables involved in the sodium chloride electrolysis was carried out for the study of the influence of four (4) operating parameters: electrolyte concentration, current density, electrode spacing and operating temperature; Experiments were developed for the selection of the material of the electrodes (anode and cathode) and for the determination of values of the four parameters mentioned in which a higher concentration of sodium hypochlorite was allowed, in this step the operating parameter evaluated was varied and all the others were kept constant, an analysis was also carried out to determine the influence of the hardness of the water and the type of sodium chloride used (Refisal and Hydrosal), the concentration of the hypochlorite produced was estimated using the household and colorimetric technique DPD; Taking into account the results of the 64 experiments performed, the effect of the operating variables on the concentration of hypochlorite obtained was analyzed. The best operating conditions for obtaining this compound at 3.85% w / v, from the sodium chloride electrolysis, were: 3 molar salt concentration, current intensity of 3.7 Amps, electrode spacing of 1 cm, and temperature between 35 - 40 ° C and an operating time of 1 hour. Finally, it was established that the cost to produce 1 kg of 3.85% sodium hypochlorite with the configuration implemented was $ 365,342.