Role of sufficient phosphorus in biodiesel production from diatom Phaeodactylum tricornutum.
In order to study the role of sufficient phosphorus (P) in biodiesel production by microalgae, Phaeodactylum tricornutum were cultivated in six different media treatments with combination of nitrogen (N) sufficiency/deprivation and phosphorus sufficiency/limitation/deprivation. Profiles of N and P, biomass, and fatty acids (FAs) content and compositions were measured during a 7-day cultivation period. The results showed that the FA content in microalgae biomass was promoted by P deprivation. However, statistical analysis showed that FA productivity had no significant difference (p = 0.63, >0.05) under the treatments of N deprivation with P sufficiency (N-P) and N deprivation with P deprivation (N-P-), indicating P sufficiency in N deprivation medium has little effect on increasing biodiesel productivity from P. triornutum. It was also found that the P absorption in N-P medium was 1.41 times higher than that in N sufficiency and P sufficiency (NP) medium. N deprivation with P limitation (N-P-l) was the optimal treatment for producing biodiesel from P. triornutum because of both the highest FA productivity and good biodiesel quality.
School of Resources and Environment, Anqing Normal University, Anqing, Anhui, China.|CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
Shi-Jin
SJ
Yu
CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
Xiao-Fei
XF
Shen
Advanced Water Management Centre, The University of Queensland, St. Lucia, 4072, Australia. grace.ghq@gmail.com.
Huo-Qing
HQ
Ge
School of Earth Sciences, The University of Queensland, St Lucia, 4072, Australia.
Hang
H
Zheng
College of Standardization, China Jiliang University, Hangzhou, China.
Fei-Fei
FF
Chu
CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China.
Hao
H
Hu
CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, People's Republic of China. rzeng@ustc.edu.cn.
Raymond J
RJ
Zeng
D056804:Biofuels / Q000032:analysis*; D018533:Biomass; D017377:Diatoms / Q000378:metabolism*; D005227:Fatty Acids / Q000032:analysis / Q000378:metabolism*; D058086:Microalgae / Q000378:metabolism*; D009584:Nitrogen / Q000032:analysis*; D010758:Phosphorus / Q000032:analysis*; D025341:Principal Component Analysis
D056804:Biofuels; D005227:Fatty Acids; D010758:Phosphorus; D009584:Nitrogen
Biodiesel; Nitrogen deprivation; Nitrogen sufficiency; Phaeodactylum tricornutum; Phosphorus sufficiency