Journal
BIORESOURCE TECHNOLOGY
Volume 315, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2020.123861
Keywords
Biosurfactant; Bioremediation; Petroleum wastewater; Polycyclic aromatic hydrocarbons; Phytotoxicity assay
Funding
- National Fellowship for Other Backward Classes (NFOBC) from University Grants Commission (UGC), New Delhi, India [NFO2018-19-OBC-GUJ-67289]
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Primarily, this study aims to evaluate the biosurfactant production capability of Stenotrophomonas sp. S1VKR-26, profiling of its bioremediation ability to remediate petroleum refinery wastewater in a lab-scale bioreactor and assessment of phytotoxicity of bioremediated petroleum wastewater. As a result, strain S1VKR-26 was found to produce 5.15 g L-1 biosurfactant, CMC of 30 mg L-1 and reduced the surface tension from 60.3 to 30.5 mN m(-1). Different PAHs like naphthalene (93%), phenanthrene (86%), fluoranthene (92%), and pyrene (98.3%), total petroleum hydrocarbons (72.33%) and phenolic compounds (93.06%) were significantly remediated from the wastewater after the treatment of strain S1VKR-26. Moreover, S1VKR-26 strain treated 1:1 diluted petroleum wastewater have higher germination (100%), vigor (486), and seedling (4.86 cm) compared to untreated wastewater. Therefore, the treatment of petroleum refinery wastewater with strain S1VKR-26 could be more effective in the sense of environmental safety and irrigation for crop production in agriculture.
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