BIODEGRADATION OF TEXTILE AZO DYES USING BACTERIAL STRAINS ISOLATED FROM TEXTILE EFFLUENT AND IMPROVEMENT OF SEEDLING GROWTH
Antony P. J. and Joshua Kariyil Jolly*
ABSTRACT
The exponential expansion of industrial sectors and subsequent advancements have resulted in a substantial upsurge in the release of chemical waste into the natural surroundings. The release of wastewater from industrial activities is a significant factor in the contamination of water and soil, hence engendering an adverse ecological setting that detrimentally impacts the plant and animal life inside ecosystems. The discharge of textile wastewater from textile manufacturers is a significant environmental concern among many industrial emissions. In light of the aforementioned environmental difficulties, biotreatment techniques have emerged as a well recognised and efficacious approach for the disposal of undesirable colour and toxicity found in textile effluents. In contrast to traditional treatment procedures, biotreatment technologies provide enhanced cost-effectiveness and environmental friendliness, making them a more desirable choice for the purpose of sustainable waste management. The present investigation focuses on the degradation process of two frequently used textile dyes, namely Methyl Red (MR) and Malachite Green (MG), via the utilisation of bacteria that have been isolated from textile effluents. This research identified and isolated six different bacterial strains from the effluent samples and subjected them to dye decolorization assays. Remarkably, the isolated bacteria, identified as Pseudomonas spp., demonstrated the capability to decolorize both Methyl Red (MR) and Malachite Green (MG) dyes. This finding suggests that Pseudomonas spp. could be promising candidates for bio-treatment applications to remediate dye-contaminated wastewater from the textile industry.
Keywords: Azo dye; Degradation; Methyl Red; Malachite Green; Textile effluent, Absorbance.
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