The living and dead biomass of the strain Bz4 highly absorbs the dyes.
The best results were obtained for Bz4 in the samples with EB (up to 95.4 %) and dye mixture (up to 99 %) and for Rz7 with BG (100 %). Differences in the dye removal potential were observed particularly in the main experiment. The type and concentration of dye affects the decolourisation effectiveness. Both strains had a significant potential to decolourise the dyes in the fluorone, azo and triphenylmethane classes. The toxicity of the biotransformation products was estimated. Azo (Evans blue (EB)) and triphenylmethane (brilliant green (BG)) dyes were used individually and in mixture. This study aimed to decolourise different dyes using two Klebsiella strains (Bz4 and Rz7) in different concentrations and incubation conditions.
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