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Effect of phosphorus on biodiesel production from Phaeodactylum tricornutum under two nitrogen conditions


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Effect of phosphorus on biodiesel production from Phaeodactylum tricornutum under two nitrogen conditions
Yu Shijin1Zeng Jianxiong2
1.School of Resources and Environment,Anqing Normal University,Anqing 246003,China; 2.School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,China
nitrogen phosphorus Phaeodactylum tricornutum biodiesel fatty acids
In order to study the effect of phosphorus(P)on biodiesel production from Phaeodactylum tricornutum under different nitrogen(N)conditions,Phaeodactylum tricornutum are cultivated in six types of media.The mass concentration of N and P of media,biomass,composition and mass fraction of fatty acids of produced biodiesel during a 7-d cultivation period are measured.The result shows that from P-replete,P-limitation up to P-starvation both in N-replete and N-starvation,the biomass decreases and the mass fraction of fatty acids increases gradually for biodiesel production from Phaeodactylum tricornutum under phosphate deficiency stress.P-replete has no effect on the biodiesel productivity of P.tricornutum under N-starvation condition because sufficient P cannot make up for reduced biomass resulted from N-starvation.The effect of P on biodiesel production from microalgae may vary with microalgal species and/or strain without N.


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Last Update: 2015-06-30