FOTO-OXIDAÇÃO CATALÍTICA APLICADA AO TRATAMENTO DE EFLUENTES PARA OBTENÇÃO DE ÁGUA PARA REÚSO NA INDÚSTRIA TÊXTIL

Holos Environment

Célia Granhen Tavares¹  Daiane Cristina Lenhard¹  Verônika Carrer Fontana¹  Alessandra Zacarias Santos¹ 

[1] Universidade Estadual de Maringá

关键词: Foto-oxidação catalítica;    Efluente têxtil;    Dióxido de titânio;    Reator fotocatalítico de filme;    Radiação ultravioleta;   

DOI  :  

学科分类：环境科学（综合）

来源: Universidade Estadual Paulista "Julio de Mesquita Filho" * Centro de Estudos Ambientais

【 摘 要 】

The main objective of this study was to evaluate the photo-catalytic oxidation process to decolorize the commercial textile dye Intense Black a textile effluent, aiming to obtain a final effluent for reuse in the industry. Both dye and textile effluent was obtained in a local laundry that dyes jeans. The textile effluent was characterized as the Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), color, turbidity, pH, spectrophotometric scanning, to determine the maximum absorbance wavelength in the visible spectrum, and concentration ofchloride (Cl-), sulfate (SO4-2), nitrate (NO3-) and phosphate (PO4-2) ions. A sample of water reused on the same industrial laundry was colleted and it was characterized in the same way as the composed effluent. The effluent treatment was made by a photo-oxidation catalytic process in a thin-film reactor impregnated with titanium dioxide, TiO2. Mercury-vapor lamps of 250 and 125 W and germicide lamps of 15W were evaluated during the tests. The results of the dye decolorization percentages were greater than the textile effluent ones. However, good results of effluent decolorization were obtained and the final color of the effluent treated was lower than the reuse water color.The best decolorization results were obtained using the 250W mercury-vapor lamp and the 15W germicide lamps. After 6 hours of experiment, the dye decolorization and the effluent decolorization was over 90% and 60%, respectively.

【 授权许可】

Unknown