Decolourization of Malachite Green and Crystal Violet Using Bacterial Strains

Synthetic dyes such as Malachite Green and Crystal Violet are used in textile, leather, and paper industrie.They are responsible for environmental and health hazards due to their carcinogenic, mutagenic, and cytotoxic properties. Present study was undertaken to investigate the potential of Escherichia coli, Bacillus spp., Pseudomonas, and a microbial consortium for degrading of the dyes, Malachite Green and Crystal Violet. The results demonstrated that all microorganisms exhibited dye-degrading ability. E. coli showed rapid decolourization within three days. Similarly Pseudomonas and Bacillus also had degradation potential. Microbial consortium showed efficient dye degradation with up to 88 % degradation. This study confirms that microbial biodegradation is an effective and sustainable strategy for removing hazardous dyes from industrial effluents.