A critical review on the treatment of dye-containing wastewater: Ecotoxicological and health concerns of textile dyes and possible remediation approaches for environmental safety

The synthetic dyes used in the textile industry pollute a large amount of water. Textile dyes do not bind tightly to the fabric and are discharged as effluent into the aquatic environment. As a result, the continuous discharge of wastewater from a large number of textile industries without prior tre...

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Published in:	Ecotoxicology and environmental safety 2022-02, Vol.231, p.113160-113160, Article 113160
Main Authors:	Al-Tohamy, Rania, Ali, Sameh S., Li, Fanghua, Okasha, Kamal M., Mahmoud, Yehia A.-G., Elsamahy, Tamer, Jiao, Haixin, Fu, Yinyi, Sun, Jianzhong
Format:	Article
Language:	eng
Subjects:	Coloring Agents Dye removal Environmental safety Hazardous pollutants Humans Textile Industry Textile wastewater Textiles Toxicity Treatment approaches Waste Water Water Pollutants, Chemical - analysis Water Pollutants, Chemical - toxicity
Online Access:	Get full text
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Summary:	The synthetic dyes used in the textile industry pollute a large amount of water. Textile dyes do not bind tightly to the fabric and are discharged as effluent into the aquatic environment. As a result, the continuous discharge of wastewater from a large number of textile industries without prior treatment has significant negative consequences on the environment and human health. Textile dyes contaminate aquatic habitats and have the potential to be toxic to aquatic organisms, which may enter the food chain. This review will discuss the effects of textile dyes on water bodies, aquatic flora, and human health. Textile dyes degrade the esthetic quality of bodies of water by increasing biochemical and chemical oxygen demand, impairing photosynthesis, inhibiting plant growth, entering the food chain, providing recalcitrance and bioaccumulation, and potentially promoting toxicity, mutagenicity, and carcinogenicity. Therefore, dye-containing wastewater should be effectively treated using eco-friendly technologies to avoid negative effects on the environment, human health, and natural water resources. This review compares the most recent technologies which are commonly used to remove dye from textile wastewater, with a focus on the advantages and drawbacks of these various approaches. This review is expected to spark great interest among the research community who wish to combat the widespread risk of toxic organic pollutants generated by the textile industries. [Display omitted] •Textile dyes are toxic and discharged as effluent into the aquatic environment.•Non-pretreated effluent has significant negative impacts on living microorganisms.•Dye-containing wastewater should be effectively treated using eco-friendly methods.•Combined approaches and recent technologies are promising for dye removal.•More research is required until an advanced, zero-waste process is established.
ISSN:	0147-6513 1090-2414