Degradation of methylene blue dye by photolysis process in a continuous flow tubular reactor using artificial radiation Ulysses Ramos, Caroline Cruz César Machado, Paula Marques Pestana, Karina Tamião de Campos Roseno

Abstract

Industrial effluent discharges pose a major threat to pollutant control, especially to the fauna and flora of water bodies. The use of dyes in the textile industry generates colored effluents and contamination at the point of disposal, and conventional treatments do not remove this type of pollutant. Within this context, the objective of this study was to study the degradation of methylene blue dye in a tubular reactor through the photolysis process using ultraviolet (UV) radiation. A solution of 16 mg/L of the dye was subjected to continuous flow UV exposure under controlled conditions, and the concentration at the reactor outlet was measured using a spectrophotometer. The results demonstrated the degradation of the dye, reaching a concentration of 3 mg/L after 3h41min of exposure.