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Growth of Chlorella vulgaris and associated bacteria in photobioreactors.

Lakaniemi AM, Intihar VM, Tuovinen OH, Puhakka JA - Microb Biotechnol (2011)

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.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry and Bioengineering, Tampere University of Technology, PO Box 541, FI-33101 Tampere, Finland. aino-maija.lakaniemi@tut.fi

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Time courses of culture pH (A), OD (B), VSS (C), chlorophyll a (D), dissolved organic carbon (E) and released DOC as percentage of VSS in: ●, the flat plate with no mixer, ▴, the flat plate with the plain mixer and ×, the flat plate with the complex mixer.
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f1: Time courses of culture pH (A), OD (B), VSS (C), chlorophyll a (D), dissolved organic carbon (E) and released DOC as percentage of VSS in: ●, the flat plate with no mixer, ▴, the flat plate with the plain mixer and ×, the flat plate with the complex mixer.

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.


Growth of Chlorella vulgaris and associated bacteria in photobioreactors.

Lakaniemi AM, Intihar VM, Tuovinen OH, Puhakka JA - Microb Biotechnol (2011)

Time courses of culture pH (A), OD (B), VSS (C), chlorophyll a (D), dissolved organic carbon (E) and released DOC as percentage of VSS in: ●, the flat plate with no mixer, ▴, the flat plate with the plain mixer and ×, the flat plate with the complex mixer.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3815273&req=5

f1: Time courses of culture pH (A), OD (B), VSS (C), chlorophyll a (D), dissolved organic carbon (E) and released DOC as percentage of VSS in: ●, the flat plate with no mixer, ▴, the flat plate with the plain mixer and ×, the flat plate with the complex mixer.
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.

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.

View Article: PubMed Central - PubMed

Affiliation: Department of Chemistry and Bioengineering, Tampere University of Technology, PO Box 541, FI-33101 Tampere, Finland. aino-maija.lakaniemi@tut.fi

Show MeSH
Related in: MedlinePlus