Industrialisation during 19th century changed mankind's life style. New technology raised mans standard and made life more comfortable but with increasing industrial development, safe disposal of industrial waste water has become the more ecological challenge. Environmental degradation has now become a global problem and maintaining ecosystem health is a serious issue being confronted by the environmentalists. Due to lack of effluent treatment facilities and proper disposal system of waste water, water bodies are getting polluted day by day and causing adverse effect on soil, water, agriculture, flora and fauna due to presence of toxic and persistent chemicals. As the problem of waste disposal has now attained complex dimensions, it becomes essential either to find suitable ways for the safe disposal of these wastes or to suggest novel use, considering them as by- products. Otherwise these will remain as accumulated wastes, contributing significantly to the environmental pollution. In the absence of uses for the waste materials there are added costs for building and maintaining the lagoons of these wastes. Finding a profitable use for this waste could further benefit the economics of the industry.

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