Removal of synthetic dyes is one of the main challenges before releasing the wastes discharged by textile industries. Biodegradation of azo dyes by alkaliphilic bacterial consortium is one of the environmental-friendly methods used for the removal of dyes from textile effluents. Hence, this study presents isolation of a bacterial consortium from soil samples of saline environment and its use for the decolorization of azo dyes, Direct Blue 151 (DB 151) and Direct Red 31 (DR 31). The decolorization of azo dyes was studied at various concentrations (100–300 mg/L). The bacterial consortium, when subjected to an application of 200 mg/L of the dyes, decolorized DB 151 and DR 31 by 97.57% and 95.25% respectively, within 5 days. The growth of the bacterial consortium was optimized with pH, temperature, and carbon and nitrogen sources; and decolorization of azo dyes was analyzed. In this study, the decolorization efficiency of mixed dyes was improved with yeast extract and sucrose, which were used as nitrogen and carbon sources, respectively. Such an alkaliphilic bacterial consortium can be used in the removal of azo dyes from contaminated saline environment.

Objective: This study involves the use Natural Rubber degrading Bacterial co-cultures isolated from rubber plantation soil for the degradation of Artificial Rubber. Methods:Plate assay method and liquid assay method by using Mineral Salt Medium was followed for screening of bacteria for its capacity to mineralize Artificial rubber. Degradation was confirmed by Spectrophotometric and Fourier Transform Infra-Red (FTIR) studies. The co-cultures were able to utilize the artificial rubber which was confirmed by Spectrophotometric and FTIR studies. Results: Bacterial cocultures have the capacity to mineralize artificial rubber. Mineralization was observed for 30 days and it was maximum (6.48 x 10-5) on the 20th Day. This was confirmed using SEM and FTIR.Further, these were applied on bioplastics and plastics to study their capacity to degrade them. It was able to degrade them as well which was confirmed using FTIR. Conclusion: From current investigation, it can be concluded that the bacterial cocultures Bacillus cohnii and Brevundimonas naejangsanensis have the capacity to mineralize artificial rubber, plastics and bioplastics. Hence such isolated cocultures can be used in removal of artificial rubber, plastics and bioplastic wastes from the environment.

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How to cite this article Krishnaswamy V and Ahongsangbam N. A Study on Mineralisation of Poly cis 1,4 isoprene (NR) and Synthetic Rubber Gloves (SRG) by the Bacterial Consortium.

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