Problem Statement
Industries are generated waste water, which contain dyes and pigments in waste water. Characteristically high in colour and organic content (Grag, et al., 2004). Dyes are widely used in industries such as textile, rubber, paper, plastic, and cosmetic. There are many of dyes exist in industries and one of them is methyl red and through nano zerovalent iron removal of dyes from waste water. Dye industry effluents constitute one of the most problematic wastewaters to be treated not only for their high chemical and biological oxygen demands (BOD) and suspended solid and content in the toxic compounds but also for their aesthetic impact. Methyl red, if accumulates into the body by inhalation, ingestion, or by absorption through skin, may affect the central nervous …show more content…
In animals, methyl red has adverse reproductive and foetal effects. The azo dyes are the largest and most versatile of all dyes used in the textile and dyeing industries and they are characterized by the presence of one or more azo group [-N=N-] in association with one or more aromatic rings (Gordon and Gregory, 1983). The azo dyes are toxic and carcinogenic. Methyl red is also a synthetic azo dye. It is therefore essential that any effluent containing an azo dye like methyl red must not be discharged into natural water bodies without prior treatment. Azo dyes are widely used in industry. A large amount of these dyes is discharged into streams and rivers, and they are considered as an environmental pollutant. Some of these compounds may accumulate in food chains and eventually reach the human body through ingestion. Intestinal microbiota and to a lesser extent, the liver enzymes, are responsible for the cleavage of azo dyes into aromatic amines. Some of human endogenous bacteria that contaminate bladder can metabolically activate aromatic amines that are produced from azo dyes (procarcinogens). The addition of the nitro-group to these aromatic amines would convert them
Industries are generated waste water, which contain dyes and pigments in waste water. Characteristically high in colour and organic content (Grag, et al., 2004). Dyes are widely used in industries such as textile, rubber, paper, plastic, and cosmetic. There are many of dyes exist in industries and one of them is methyl red and through nano zerovalent iron removal of dyes from waste water. Dye industry effluents constitute one of the most problematic wastewaters to be treated not only for their high chemical and biological oxygen demands (BOD) and suspended solid and content in the toxic compounds but also for their aesthetic impact. Methyl red, if accumulates into the body by inhalation, ingestion, or by absorption through skin, may affect the central nervous …show more content…
In animals, methyl red has adverse reproductive and foetal effects. The azo dyes are the largest and most versatile of all dyes used in the textile and dyeing industries and they are characterized by the presence of one or more azo group [-N=N-] in association with one or more aromatic rings (Gordon and Gregory, 1983). The azo dyes are toxic and carcinogenic. Methyl red is also a synthetic azo dye. It is therefore essential that any effluent containing an azo dye like methyl red must not be discharged into natural water bodies without prior treatment. Azo dyes are widely used in industry. A large amount of these dyes is discharged into streams and rivers, and they are considered as an environmental pollutant. Some of these compounds may accumulate in food chains and eventually reach the human body through ingestion. Intestinal microbiota and to a lesser extent, the liver enzymes, are responsible for the cleavage of azo dyes into aromatic amines. Some of human endogenous bacteria that contaminate bladder can metabolically activate aromatic amines that are produced from azo dyes (procarcinogens). The addition of the nitro-group to these aromatic amines would convert them