ABSTRACT

Since the beginning of time, people have used colour, and as population and industrial expansion have expanded, synthetic dyes have become more popular. Bacteria isolated from a variety of sources, such as soil contaminated with dye and textile effluent, have demonstrated the capacity to decolourise and decompose these dye pollutants, improving the quality of the water. Numerous microorganisms, including fungi and actinomycetes as well as bacteria specially Bacillus Cereus, Aeromonas hydrophila and Bacillus subtilis, have dye-decolorizing ability. These traits synchronize with the capacity of different strains to function under a variety of a wide range of pH, salinity, and temperature, as well as good performance under conditions that are significant to industry and the environment. The utilization of bacteria in the bioremediation of azo dye-contaminated environments using the widest range of methodologies and conditions is covered in this research with remarkable results. To highlight the significance of bacterial bioremediation, this study was carried out. According to the results, it was found that the highest percentage of the degradation of congo red dye was 74% at 37°C temperature and pH 6 after 7 days of incubation. The different pH values (5 to 7) and temperature range (25°C to 55°C) were tested to check the effective range of degradation and it was observed that the temp 25°C and pH 5 was found to be most suitable for biodegradation. The percentage of decolorization was affected by the bacterial strain and different concentration. 16S rRNA sequencing analysis revealed that isolate belongs to Acinetobacter indicus. This study indicates that this bacterium can be utilized for dye degradation due to high ability of biodegradation. Keywords: Textile effluent, degradation, dye decolorizing, bioremediation, azo dye
Publication date: 01/07/2024

https://ijbpas.com/pdf/2024/July/MS_IJBPAS_2024_8138.pdf

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https://doi.org/10.31032/IJBPAS/2024/13.7.8138