Abstract
In this paper, nine strains of salt-tolerant petroleum-degrading bacteria were applied to an biological aerated filter. Simulating the degradation of high-salinity petroleum wastewater with n-hexadecane and 2,4-ditert-butylphenol as the primary pollutants and analyzing the structure of the biofilm at various salt concentrations. According to the results, when the salinity was 4%, the COD removal efficiency reached 74.34%. Various halotolerant microorganisms have adapted to various salt concentrations. At a salinity of 3%, n-hexadecane exhibited the best degradation effect, with a rate of 83.21%. Shewanella, Acinetobacter, and Marinobacter were the predominant bacterial groups at the time. At 4% salinity, Acinetobacter and Pseudomonas were the predominant bacteria, and the average 2,4-ditert-butylphenol degradation rate was the highest at 63.02%. This study provided an experimental basis for further studying the biological treatment of high-salinity petroleum wastewater.
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Due to the nature of this research, no dataset was generated or analyzed during this study. Participants of this study did not agree for their data to be shared publicly, so supporting data is not available.
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Funding
This work was supported by Tianjin Science and Technology Planning Project (22YDTPJC00760), Technology Innovation Guidance Special (Fund) (20YDTPJC01790), Tianjin Key R&D Program—Social Development and Agriculture Project (21YFSNSN00190) and National Key R&D Program ‘Technology Boosts Economy 2020’ Key Special Project (SQ2020YFF0401503), Tianjin Science and Technology Planning Project (18ZXSZSF00090), and Tianjin Technology Innovation Guidance Project (No. 20YDTPJC00150).
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Shiling Liu: writing—original draft, writing—review and editing; Wenjiao Yuan: formal analysis, funding acquisition; Xiaolin Yang, Chengbin Li, Yishan Ji: investigation; Xin Feng, Meitong Li: funding acquisition; Yuhong Xie: conceptualization and methodology, writing—original draft, writing—review and editing; all authors reviewed the manuscript.
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Liu, S., Yuan, W., Yang, X. et al. Microbial degradation of petroleum characteristic pollutants in hypersaline environment, emphasizing n-hexadecane and 2,4 di-tert-butylphenol. Environ Monit Assess 195, 771 (2023). https://doi.org/10.1007/s10661-023-11362-y
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DOI: https://doi.org/10.1007/s10661-023-11362-y