The photoelectrocatalytic oxidative treatment of textile wastewater containing disperse dyes

Autor(es)

Paschoal, Fabiana M. M. ^[1] ; Anderson, Marc. A. ^[2] ; Zanoni, Maria Valnice B. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo State, UNESP, BR-14801970 Araraquara, SP - Brazil

^[2] Univ Wisconsin, Environm Chem & Technol Program, Madison, WI 53706 - USA

• Tipo de documento: Artigo Científico
• Fonte: DESALINATION; v. 249, n. 3, p. 1350-1355, DEC 25 2009.
• Citações Web of Science: 32

Resumo

This paper presents a study of a prospective photoeletrocatalytic oxidation treatment system for disperse dyes obtained from a textile industry. The process utilizes titanium dioxide thin-film electrodes prepared by the sol-gel method as a photo-oxidative anode. Using UV irradiation and ail applied potential of + 1.0 V on the nanoporous photoanode of Ti/TiO(2) it is Possible to reach a reduction of color removal of 90%, 94% and 100% and 63%, 45% and 61% for TOC removal of DOD, DRD and DRR dyes. The method has been successfully applied to treat textile industry effluent collected at different steps in the industrial process namely before and after conventional wastewater treatment. The results were satisfactory for both effluent samples, leading to a reduction from 52.6% to 69.0% of COD, a diminishing of 80-89% of discoloration and a removal of TOC in the range of 47 to 50%. (C) 2009 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 04/07353-7 - Descoloracao e degradacao de corantes acidos usados em curtumes via oxidacao eletroquimica e fotoeletroquimica.
• Beneficiário: Fabiana Maria Monteiro Paschoal
• Modalidade de apoio: Bolsas no Brasil - Doutorado