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Abstract : <p>The production and accumulation of waste water of its various types constitutes one of the serious environmental problems, due to the fact that it contains toxic and carcinogenic substances that can lead to the deterioration of any ecosystem, and thus affect human health directly or indirectly through its transfer to it through the food chain. The components of waste water that are released to environmental systems include various types of pollutants such as heavy metals, organic materials, residues of fertilizers, pesticides, industrial detergents, petroleum and its derivatives and the associated oil residues, fats of different density, acids, alkalis, and biological pollutants such as bacteria, fungi, algae, parasites, viruses and other microorganisms, among others. The most common types of these pollutants are dyes. The current paper deals with a review of methods for treating polluted water with one of the most important and most widely used types of dyes in the field of medicine, veterinary medicine and life sciences, which is the eosin dye that is used in many industries in addition to its use in the medical and biological fields. Where there are many methods and techniques that have studied the removal of this dye from contaminated aqueous solutions with different design conditions. The purpose of this review article ends with two points. The first is to shed light on this toxic dye that is posed in not small quantities by industrial, laboratory, medical and biological activities alike. As for the second, it is the inclusion of the importance of treating the water presented to the various waterways and polluted by this character through a review of the different treatment methods for this type of pollutant, which began since the mid-nineties of the last century.</p>

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