ABSTRACT

Present research focuses on exploring roles of exopolysaccharides from Staphylococcus sp. in uptake of co-contaminants. Highest uptake of cadmium was recorded by EPS matrix (95.67%) and Staphylococcus sp. MB377 (96.45%) without malachite green. Copper removal efficiency of Staphylococcus sp. (92.64%) and EPS (90.68%) enhanced on addition of dye. EPS displayed highest cadmium uptake (95.49%) with 1.08 mg g-1 adsorption rate under the dye stress. Quantification of dye degradation/decolorization represented decline in color removing efficiency of exopolymeric matrix upon addition of copper, cadmium and chromium. Approximately 85.10%, 84.76% &83.90% dye removal was recorded under cadmium, chromium and copper stress. Staphylococcus sp. displayed effective decolorization of dyecombined with chromium (81.63%) following cadmium (79.65%) and copper (79.35%). Dye binding affinity of EPS was found to be highest in cadmium stress (0.86 mg g-1). Ultraviolet-Visible kinetics represented variable peak patterns indicating possible transformation of contaminants in to different metabolites and
Publication date: 01/05/2020

https://ijbpas.com/pdf/2020/May/MS_IJBPAS_2020_5043.pdf

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