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Environ Sci Pollut Res Int. 2017 May;24(14):12664-12672. doi: 10.1007/s11356-016-7889-1. Epub 2016 Oct 25.

Treatment and reuse of textile wastewaters by mild solar photo-Fenton in the presence of humic-like substances.

Author information

1
Grupo de Procesos de Oxidación Avanzada. Dpto. de Ingeniería Textil y Papelera, Universitat Politècnica de València, Alcoy, Spain.
2
Grupo de Investigación y Gestión Integral en la Industria Textil. Dpto. de Ingeniería Textil y Papelera, Universitat Politècnica de València, Alcoy, Spain.
3
Grupo de Procesos de Oxidación Avanzada. Dpto. de Ingeniería Textil y Papelera, Universitat Politècnica de València, Alcoy, Spain. rvicente@txp.upv.es.

Abstract

In this paper, the possibility of reusing textile effluents for new dyeing baths has been investigated. For this purpose, different trichromies using Direct Red 80, Direct Blue 106, and Direct Yellow 98 on cotton have been used. Effluents have been treated by means of a photo-Fenton process at pH 5. Addition of humic-like substances isolated form urban wastes is necessary in order to prevent iron deactivation because of the formation of non-active iron hydroxides. Laboratory-scale experiments carried out with synthetic effluents show that comparable results were obtained when using as solvent water treated by photo-Fenton with SBO and fresh deionized water. Experiments were scaled up to pilot plant illuminated under sunlight, using in this case a real textile effluent. Decoloration of the effluent could be achieved after moderate irradiation and cotton dyed with this water presented similar characteristics as when deionized water was used.

KEYWORDS:

Humic-like substances; Mild solar photo-Fenton; Reuse; Textile wastewaters

PMID:
27783248
DOI:
10.1007/s11356-016-7889-1
[Indexed for MEDLINE]

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