Análisis del coeficiente de permeabilidad de zeolita natural tipo clinoptilolita en la reducción de colorante reactivo negro bodactive wnn de aguas residuales de lavadoras de jeans

Abstract

Permeability is a characteristic of materials that allow a fluid to pass through a filter medium, such as the natural zeolite type clinoptilolite. The present study aims to verify if the permeability coefficient (k) influences the reduction of the reactive black dye WNN, which is a dye widely used in the jean industry, which generates large wastewater discharges of said dye without a adequate treatment. To analyze this relationship, permeability tests were carried out with different concentrations of dye with previously studied dosages, selecting 1 g, 5.8 g and 10.6 g per 20 liters of water each. In addition, a scale filter prototype was made that replicates the volumes of the permeameter and allows us to take samples for liquid analysis in UV-Vis spectrophotometer and saturation and mass method, at intervals of 6 hours, until completing one day. A medium permeability was obtained, which had no impact on the reduction of the dye, but it was found that, the higher the concentration of dye in the water, the lower the permeability coefficient, that is, the liquid takes longer to pass through the volume of the material studied. However, the time variation is less than one second, which is why it does not have a major impact. Through the results of the UV-Vis spectrophotometer, it was seen that the material takes approximately 18 hours to saturate and that the reduction of the dye is practically nil.