studied the genotoxicity of some sulfur dyes. Moawad et al. [4] evaluated the toxicity of eight textile dyes using the Ames test. They revealed that most of the dyes were mutagenic for the test strains used in this study, which caused many countries to put a ban on the use of several colorants and to enforce effective management of colored wastewaters along with strict compliance with color standards. Several processes, like coagulation/flocculation, chemical oxidation and biosorption, have been employed for the treatment of dye bearing wastewaters. Chakraborty et al. [