Biomass and pigments production of a newly isolated photosynthetic bacterium Ectothiorhodospira shaposhnikovii P2 from saline wastewater
- 21 Downloads
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.
KeywordsPhotosynthetic 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).
- Bong KM, Kim KM, Seo MK, Han JH, Park IC, Lee CW, Kim PI, Bong KM, Kim KM, Seo MK (2017) Optimization of medium for the carotenoid production by Rhodobacter sphaeroides PS-24 using response surface methodology. Korean J Org Agric 25:135–148 Google Scholar
- Federation WE, APH Association (2005) Standard methods for the examination of water and wastewater. American Public Health Association (APHA), WashingtonGoogle Scholar
- Imhoff JF (2015) Ectothiorhodospira, Bergey’s manual of systematics of Archaea and Bacteria. Wiley, New YorkGoogle Scholar
- McWilliiams A (2018) BBC Research: the global market for carotenoids. https://www.bccresearch.com/market-research/food-and-beverage/the-global-market-for-carotenoids-fod025f.html. Accessed June 2018
- Mezzomo N, Ferreira SRS (2016) Carotenoids functionality, sources, and processing by supercritical technology: a review. J Chem 2016:1–16. https://doi.org/10.1155/2016/3164312
- Pantiushenko IV, Rudakovskaya PG, Starovoytova AV, Mikhaylovskaya AA, Abakumov MA, Kaplan MA, Tsygankov AA, Majouga AG, Grin MA, Mironov AF (2015) Development of bacteriochlorophyll a-based near-infrared photosensitizers conjugated to gold nanoparticles for photodynamic therapy of cancer. Biochemistry-Moscow 80:752–762CrossRefGoogle Scholar
- Saejung C, Ampornpat W (2017) Production and nutritional performance of carotenoid-producing photosynthetic bacterium Rhodopseudomonas faecalis PA2 grown in domestic wastewater intended for animal feed production. Waste Biomass Valoriz 1–12Google Scholar
- Zhang H, Hu Q-P (2015) Isolation, identification and physiological characteristics of high carotenoids yield Rhodopseudomonas faecalis PSB-B. Int J Recent Sci Res 6:3893–3899Google Scholar
- Zwietering MH, Jongenburger I, Rombouts FM, van’t Riet K (1990) Modeling of the bacterial growth curve. Appl Environ Microbiol 56:1875–1881Google Scholar