Prodigious biodegradation of polycyclic aromatic fluorene with manganese oxide nanoparticles from Stenotrophomonas sp.

The current research explores the microbial synthesis of manganese oxide nanoparticles from Stenotrophomonas sp. their characterization, and subsequent application against the degradation of fluorene hydrocarbon. There are several physical and chemical strategies to treat polycyclic aromatic hydrocarbons. But Nano-bioremediation is most effective and economical in degrading the polycyclic aromatic hydrocarbons. Various structural, crystalline, and optical characteristics of manganese oxide nanoparticles were investigated. Manganese oxide nanoparticle formation is indicated by a distinctive peak at 248 nm with a 3.5 eV band gap. X-ray diffraction demonstrated that manganese oxide nanoparticles had a crystalline grain size of 6.3 nm. Scanning and high-resolution transmission electron micrographs reveal the agglomerated spherical form. Manganese and oxygen existence and purity were validated with EDAX analysis. This study investigated the optimizational degradation of fluorene hydrocarbon using response surface methodology. The degradation of fluorene hydrocarbon was examined using Fourier Transform Infrared Spectroscopy and Gas chromatography-mass spectrometric analysis. Trigonella foenum-graecum was used in the phyto-toxicity study of fluorene degradation by microbial-synthesized manganese oxide nanoparticles.