Phosphorus plays an important role in enhancing biodiesel productivity of Chlorella vulgaris under nitrogen deficiency

[Display omitted] ► P is important to enhance algal lipid productivity under nitrogen deficiency (N−). ► Lipid productivity under N− with sufficient P supply is highest as 58.39mg/L/day. ► P uptake rate under N− is 3.8 times faster than that of sufficient N&P supply. ► 31P NMR shows that uptake...

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Veröffentlicht in:Bioresource technology Jg. 134; S. 341 - 346
Hauptverfasser: Chu, Fei-Fei, Chu, Pei-Na, Cai, Pei-Jie, Li, Wen-Wei, Lam, Paul K.S., Zeng, Raymond J.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Kidlington Elsevier Ltd 01.04.2013
Elsevier
Schlagworte:
analysis
Biodiesel
Biofuel production
Biofuels
Biofuels - analysis
Biological and medical sciences
Biomass
biomass production
Biotechnology
Chlorella vulgaris
Chlorella vulgaris - cytology
Chlorella vulgaris - drug effects
Chlorella vulgaris - growth & development
Chlorella vulgaris - metabolism
cytology
deficiency
drug effects
Energy
Esters
Esters - analysis
Fatty Acids
Fatty Acids - analysis
Fundamental and applied biological sciences. Psychology
growth & development
Industrial applications and implications. Economical aspects
Lipid productivity
Lipids
Magnetic Resonance Spectroscopy
metabolism
microalgae
nitrogen
Nitrogen - deficiency
Nitrogen - metabolism
Nitrogen - pharmacology
nitrogen content
nuclear magnetic resonance spectroscopy
pharmacology
Phosphorus
Phosphorus - metabolism
Phosphorus removal
Phosphorus uptake
Polyphosphate accumulation
Productivity
starvation
Uptakes
Waste water
wastewater
Lipid productivity
Nitrogen deficiency
Phosphorus uptake
Polyphosphate accumulation
Chlorella vulgaris
Productivity
Algae
Deficiency
Lipids
Phosphorus
Chlorophyceae
Nitrogen
Nutrient uptake
Biodiesel
Polyphosphates
Chlorophyta
ISSN:0960-8524, 1873-2976, 1873-2976
Online-Zugang:Volltext
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Zusammenfassung:[Display omitted] ► P is important to enhance algal lipid productivity under nitrogen deficiency (N−). ► Lipid productivity under N− with sufficient P supply is highest as 58.39mg/L/day. ► P uptake rate under N− is 3.8 times faster than that of sufficient N&P supply. ► 31P NMR shows that uptake P is accumulated as polyphosphate in algal cells. To investigate the role of phosphorus in lipid production under nitrogen starvation conditions, five types of media possessing different nitrogen and phosphorus concentrations or their combination were prepared to culture Chlorella vulgaris. It was found that biomass production under nitrogen deficient condition with sufficient phosphorus supply was similar to that of the control (with sufficient nutrition), resulting in a maximum lipid productivity of 58.39mg/L/day. Meanwhile, 31P NMR showed that phosphorus in the medium was transformed and accumulated as polyphosphate in cells. The uptake rate of phosphorus in cells was 3.8 times higher than the uptake rate of the control. This study demonstrates that phosphorus plays an important role in lipid production of C. vulgaris under nitrogen deficient conditions and implies a potential to combine phosphorus removal from wastewater with biodiesel production via microalgae.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0960-8524
1873-2976
1873-2976
DOI:10.1016/j.biortech.2013.01.131