Abstract
Methodologies used in textile effluents treatment consist in different ways: biological, chemical and physical-chemical. Thus, electrochemical and photochemical processes are promising such as an alternative or complementary treatment. Therefore, an experimental photoelectrolytic system was used to treat a simulated effluent containing Remazol Navy Blue dye (C.I. Reactive Blue 89). This photoelectrolytic reactor presented a commercial anode (70TiO 2 /30RuO 2 .) and an UVC lamp. The results demonstrated the treatment was able to degrade the dye in good cost-efficiency performance.
Highlights
New technologies in chemical industry provide a greater number of compounds and new molecules of textile dyes are available every year
The results demonstrated the treatment was able to degrade the dye in good cost-efficiency performance
The treatment system was performed in order to evaluate color removal in different dye concentrations
Summary
New technologies in chemical industry provide a greater number of compounds and new molecules of textile dyes are available every year. Environmental impact is due to effluent color, toxicity and chemical stability of the dyes in water. The environmental impact is due to effluent color, toxicity and chemical stability of the dyes in water, which endangers the ecosystem balance and the food chain (Silva et al, 2009). Some dye molecules and their subproducts are carcinogenic and mutagenic (Catanho et al, 2006) and demonstrate acute toxicity (Peralta-Zamora et al, 2002) These effluents often present high levels of heavy metals (Catanho et al, 2006). In effluents with reactive dyes, the treatment needs advanced technology due to their molecular structures that is unlikely to be degraded by biological processes. It was used a photoelectrolytic system to optimize the process for commercial use
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