ABSTRACT
This chapter provides an overview of the microbial decolourisation of dyes from wastewaters through enzymatic biodegradation. Bioremediation appears as an eco-friendly and less expensive alternative for the treatment of industrials wastewaters containing synthetic dyes. Biodegradation with microbial enzymes appears as an eco-friendly and less expensive alternative for the treatment of industrials wastewaters containing synthetic dyes. Microorganisms produce many classes of enzymes, which can be used for the biodegradation of pollutants. Microbial biodegradation is an essential process for the biogeochemical cycles of carbon, nitrogen, sulfur and other elements that participate in the functioning of living systems. Many yeast enzymes such as phenol oxidases, reductases, peroxidases and azoreductases have been related to biodegradation of synthetic dyes.
