Biomass and pigments production of a newly isolated photosynthetic bacterium Ectothiorhodospira shaposhnikovii P2 from saline wastewater

  • J. CaiEmail author
  • Y. Guan
  • F. Li
  • Y. Zhao
  • C. Feng
  • N. Tang
Original Paper


Saline wastewater generation has increased in recent years, and saline-tolerant bacteria are very important for the treatment of saline wastewater. In this study, a haloduric photosynthetic bacterium Ectothiorhodospira shaposhnikovii P2 was isolated, and its cell biomass, pigments accumulation, and pollutants removal capacity were analyzed during salinity wastewater treatment process. The results showed that the optimal pH for obtaining maximum cell biomass (1.161 ± 0.021 g/L) and COD (95.83 ± 0.32%) and NH4+–N (87.72 ± 0.88%) removal was 8.0, whereas that for achieving high carotenoids (17.3 ± 0.2 mg/L) and bacteriochlorophylls (52.2 ± 2.3 mg/L) yields was 8.5. Thus, wastewater treatment processes using photosynthetic bacteria have the advantage of accumulating valuable biomass together with pollutant removal.


Photosynthetic bacterium Salinity wastewater Photosynthetic pigments Carotenoids Bacteriochlorophyll pH 



This work was support by the Natural Science Foundation of Tianjin of China (17JCYBJC22900), Student Laboratory Innovation Fund of Tianjin University of Science and Technology (1803A203) and Qingdao Science and Technology People-Benifit Project (18-6-1-116-nsh).


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Copyright information

© Islamic Azad University (IAU) 2018

Authors and Affiliations

  1. 1.Tianjin Key Laboratory of Marine Resources and Chemistry, College of Chemistry Engineering and Materials ScienceTianjin University of Science and TechnologyTianjinChina
  2. 2.Tianjin International Joint Academy of BiomedicineTianjinChina
  3. 3.Qingdao University of Science and TechnologyQingdaoChina

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