Bioremediation of various aromatic and emerging pollutants by <i>Bacillus cereus</i> sp. isolated from petroleum sludge

Abstract The accumulation of toxic chemical constituents in sludge and wastewater has fuelled an interest investigating efficient eco-friendly remediation approaches. In this study, a set bacterial samples were isolated from petroleum tested for their ability to degrade different aromatic pollutants, including azo dyes emerging pollutants. Although exhibiting differential specificity, all isolates able classes efficiently. Ribosomal 16S rRNA sequencing the 12 showed that they belonged two genera: Bacillus cereus Pseudomonas guariconensis. Of these strains, MA1 (B. cereus) was most promising chosen further optimization biochemical studies. optimum culture conditions found be at pH 7, with 100 ppm dye concentration, under aerobic condition. addition efficiently degrading various (e.g. Congo Red, Reactive Black 5, PBS, Toluidine Blue), also capable pollutants prometryn, fluometuron sulfamethoxazole). Preliminary transcriptome analysis shows grown on media containing mixture appears differentially express number genes. Data shown here strongly suggests is rich reservoir bacteria powerful abilities.