The Analysis of use Advanced Oxidative Processes (AOPs) as photolysis and photocatalysis for the degradation of dyes Part I: Construction of a photocatalysis reactor

Paula Marques Pestana, Caroline Cruz Cézar Machado, Raquel Lang, Aldo Ramos Santos, Karina Tamião de Campos Roseno


Contamination of natural waters is one of the major problems of modern society, and the textile industries have special mention in this context. The textile effluents are characterized to have high colors, because of the presence of dyes which are not fixed on the fibers during the dyeing process, thus causing severe environmental problems. The conventional treatment applied by the water treatment is not able to completely remove these dyes, which are found in the treated water. The Advanced Oxidative Processes (AOP) among them heterogeneous photocatalysis, is an alternative to eliminate this contamination of the environment by dyes. Photocatalytic degradation is achieved with the aid of a photocatalyst, in this case a semiconductor, and a source of radiation. This work aims to build a photocatalysis system to study the parameters that influence the process, aiming to make the process feasible for large scale application.

Keywords: photocatalysis, methylene blue dye, , textile industries, water, Advanced Oxidative Processes.


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