Biosorption of textile dyes usingIndustrial biomass waste

Abstract

The industries which cause concern to environment by release of newlinedyes and dye related components in the form of wastewater are the dye newlineproducing and the dyeing ones The uncontrolled release of these compounds newlinein the environment causes several environmental problems Since the dyes newlineused found to be chemically and photolytically stable they are highly newlinepersistent in natural environments Owing to increasing demand for textile newlinefabrics synthetic dyes are widely used in textile fibers such as cotton newlinepolyester wool and silk More than 10000 different types of dyes and newlinepigments with an annual production of more than 07 million tons are newlinecommercially available and 5 to 10 of the dyestuff is discharged as newlineindustrial effluents Untreated disposal of this coloured waste water into the newlinenatural water bodies cause damage not only to aquatic life but also to human newlinebeings by mutagenic andor carcinogenic effect Thus the removal of dyes newlinefromcoloured waste waters particularly from textile and dyeing industries is newlineone of the major environmental concerns To minimize the impact of such newlineeffluents various techniques such as electro flotation membrane filtration newlinereverse osmosis oxidation techniques and ionexchange have been developed newlineHowever these processes are expensive and cannot be used to treat a wide newlinerange of industrial effluents newline newline