Photocatalytic Membrane Reactor for the Removal of C.I. Disperse Red 73

Materials

Valentina Buscio¹  Stephan Brosillon²  Julie Mendret²  Martí Crespi¹  Carmen Gutiérrez-Bouzán¹ 

[1] Institut d’Investigació Tèxtil i Cooperació Industrial de Terrassa (INTEXTER), Universitat Politècnica de Catalunya-BarcelonaTech (UPC). C/Colom 15, Terrassa 08222, Spain; E-Mails:;Institut Européen des Membranes (IEM), UMR Université Montpellier 2 Place E. Bataillon, Montpellier F-34095, France; E-Mails:

关键词: photocatalytic membrane reactor;    titanium dioxide;    C.I. Disperse Red 73;    UV light;    polysulfone membrane;    microfiltration;   

DOI  :  10.3390/ma8063633

来源: mdpi

【 摘 要 】

After the dyeing process, part of the dyes used to color textile materials are not fixed into the substrate and are discharged into wastewater as residual dyes. In this study, a heterogeneous photocatalytic process combined with microfiltration has been investigated for the removal of C.I. Disperse Red 73 from synthetic textile effluents. The titanium dioxide (TiO₂) Aeroxide P25 was selected as photocatalyst. The photocatalytic treatment achieved between 60% and 90% of dye degradation and up to 98% chemical oxygen demand (COD) removal. The influence of different parameters on photocatalytic degradation was studied: pH, initial photocatalyst loading, and dye concentration. The best conditions for dye degradation were pH 4, an initial dye concentration of 50 mg·L⁻¹, and a TiO₂ loading of 2 g·L⁻¹. The photocatalytic membrane treatment provided a high quality permeate, which can be reused.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.