Tratamento de banhos de tingimento têxtil por processos foto-Fenton e avaliação da potencialidade de reuso

Química Nova

Geovani Zanella²  Mauro Scharf²  Giovana Aparecida Vieira²  Patricio Peralta-zamora¹ 

[1] ,Fundação Universidade Regional de Blumenau Departamento de Química Blumenau SC ,Brasil

关键词: dyeing;    photo-Fenton;    reuse;   

DOI  :  10.1590/S0100-40422010000500006

来源: SciELO

【 摘 要 】

In this work the treatment of textile dyeing baths by a sequential reductive-oxidative process was evaluated, aiming its utilization in new dyeing process. The results demonstrated that reactive dyes can be easily degraded by reductive processes mediated by zero-valent iron, a fact that induces decolorizations of about 80%. Sequential photo-Fenton processes permit almost total removal of the residual color with elimination of 90% of the COD content. The reuse of treated residues permits the achievement of materials that attend practically all textile specifications, with exception of the color difference parameter (ΔE), which is unsatisfactory toward the importation standards, but adequate for the national market.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License