Growth of Chlorella vulgaris and associated bacteria in photobioreactors.
Bottom Line: Static mixers used in the flat plate photobioreactors did not generally enhance the growth at the low light intensities used.Bacterial growth as determined by QPCR was associated with the growth of C. vulgaris.Analysis of the diversity of non-photosynthetic microorganisms in algal mass cultures can provide useful information on the public health aspects and unravel community interactions.
Affiliation: Department of Chemistry and Bioengineering, Tampere University of Technology, PO Box 541, FI-33101 Tampere, Finland. firstname.lastname@example.orgShow MeSH
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Mentions: Three different flat plate photobioreactor configurations, a flat plate reactor with no mixer (NM), a flat plate reactor with a plain mixer (PM) and a flat plate reactor with a complex mixer (CM), were used to grow C. vulgaris. The results were as presented in Figs 1 and 2. The temperature varied between 23.6°C and 26.8°C and the dissolved O2 (DO) between 7.6 and 8.8 mg l−1 (94–108% air saturation). The pH increased at the beginning from 7.5 to 8.6–9.1, started to decrease on days 4–5 and approached the initial pH by the end of all flat plate cultivations (Fig. 1A). The daily pH fluctuation was somewhat higher in the CM than in the other two reactor configurations.
Affiliation: Department of Chemistry and Bioengineering, Tampere University of Technology, PO Box 541, FI-33101 Tampere, Finland. email@example.com