TY - JOUR
T1 - Effect of phosphorus on biodiesel production from Scenedesmus obliquus under nitrogen-deficiency stress
AU - Chu, Fei Fei
AU - Chu, Pei Na
AU - Shen, Xiao Fei
AU - Lam, Paul K.S.
AU - Zeng, Raymond J.
N1 - Funding Information:
The authors would like to acknowledge the financial support of the Hundred-Talent Program of Chinese Academy of Sciences and the Program for Changjiang Scholars and Innovative Research Team in University .
PY - 2014/1
Y1 - 2014/1
N2 - In order to study the effect of phosphorus on biodiesel production from Scenedesmus obliquus especially under nitrogen deficiency conditions, six types of media with combinations of nitrogen repletion/depletion and phosphorus repletion/limitation/depletion were investigated in this study. It was found that nitrogen starvation compared to nitrogen repletion enhanced biodiesel productivity. Moreover, biodiesel productivity was further strengthened by varying the supply level of phosphorus from depletion, limitation, through to repletion. The maximum FAMEs productivity of 24.2. mg/L/day was obtained in nitrogen depletion with phosphorus repletion, which was two times higher than that in nutrient complete medium. More phosphorus was accumulated in cells under the nitrogen starvation with sufficient phosphorus condition, but no polyphosphate was formed. This study indicated that nitrogen starvation plus sufficient P supply might be the real "lipid trigger". Furthermore, results of the current study suggest a potential application for utilizing microalgae to combine phosphorus removal from wastewater with biodiesel production.
AB - In order to study the effect of phosphorus on biodiesel production from Scenedesmus obliquus especially under nitrogen deficiency conditions, six types of media with combinations of nitrogen repletion/depletion and phosphorus repletion/limitation/depletion were investigated in this study. It was found that nitrogen starvation compared to nitrogen repletion enhanced biodiesel productivity. Moreover, biodiesel productivity was further strengthened by varying the supply level of phosphorus from depletion, limitation, through to repletion. The maximum FAMEs productivity of 24.2. mg/L/day was obtained in nitrogen depletion with phosphorus repletion, which was two times higher than that in nutrient complete medium. More phosphorus was accumulated in cells under the nitrogen starvation with sufficient phosphorus condition, but no polyphosphate was formed. This study indicated that nitrogen starvation plus sufficient P supply might be the real "lipid trigger". Furthermore, results of the current study suggest a potential application for utilizing microalgae to combine phosphorus removal from wastewater with biodiesel production.
KW - Biodiesel productivity
KW - Lipid trigger
KW - Nitrogen deficiency
KW - Phosphorus effect
KW - Scenedesmus obliquus FACHB-417
UR - http://www.scopus.com/inward/record.url?scp=84888798448&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2013.11.013
DO - 10.1016/j.biortech.2013.11.013
M3 - Article
C2 - 24292204
AN - SCOPUS:84888798448
SN - 0960-8524
VL - 152
SP - 241
EP - 246
JO - Bioresource Technology
JF - Bioresource Technology
ER -
