TY - JOUR
T1 - Conversion efficiency and oil quality of low-lipid high-protein and high-lipid low-protein microalgae via hydrothermal liquefaction
AU - Li, Hao
AU - Liu, Zhidan
AU - Zhang, Yuanhui
AU - Li, Baoming
AU - Lu, Haifeng
AU - Duan, Na
AU - Liu, Minsheng
AU - Zhu, Zhangbing
AU - Si, Buchun
N1 - Funding Information:
We would like to thank ENN Science & Technology Co., Ltd. (Langfang, China) for the supply of microalgae and support. This work was supported by the National High-Tech R&D Program of China ( 2012AA051803 ), the National Natural Science Foundation of China (No. 21106080 ), the Thousand Talents Program (The Recruitment Program of Global Experts), and the Chinese Universities Scientific Fund ( 2012RC026 ). The first author is also grateful to Professor Brian He from the University of Idaho, Moscow, ID, USA for his valuable advice.
PY - 2014/2
Y1 - 2014/2
N2 - Hydrothermal liquefaction (HTL) is a promising technology for converting algae into biocrude oil. Here, HTL of a low-lipid high-protein microalgae (Nannochloropsis sp.) and a high-lipid low-protein microalgae (Chlorella sp.) was studied. An orthogonal design was applied to investigate the effects of reaction temperature (220-300. °C), retention time (30-90. min), and total solid content (TS, 15-25%. wt) of the feedstock. The highest biocrude yield for Nannochloropsis sp. was 55% at 260. °C, 60. min and 25%. wt, and for Chlorella sp. was 82.9% at 220. °C, 90. min and 25%. wt. The maximum higher heating values (HHV) of biocrude oil from both algae were ~37. MJ/kg. GC-MS revealed a various distribution of chemical compounds in biocrude. In particular, the highest hydrocarbons content was 29.8% and 17.9% for Nannochloropsis and Chlorella sp., respectively. This study suggests that algae composition greatly influences oil yield and quality, but may not be in similar effects.
AB - Hydrothermal liquefaction (HTL) is a promising technology for converting algae into biocrude oil. Here, HTL of a low-lipid high-protein microalgae (Nannochloropsis sp.) and a high-lipid low-protein microalgae (Chlorella sp.) was studied. An orthogonal design was applied to investigate the effects of reaction temperature (220-300. °C), retention time (30-90. min), and total solid content (TS, 15-25%. wt) of the feedstock. The highest biocrude yield for Nannochloropsis sp. was 55% at 260. °C, 60. min and 25%. wt, and for Chlorella sp. was 82.9% at 220. °C, 90. min and 25%. wt. The maximum higher heating values (HHV) of biocrude oil from both algae were ~37. MJ/kg. GC-MS revealed a various distribution of chemical compounds in biocrude. In particular, the highest hydrocarbons content was 29.8% and 17.9% for Nannochloropsis and Chlorella sp., respectively. This study suggests that algae composition greatly influences oil yield and quality, but may not be in similar effects.
KW - Biocrude oil
KW - Hydrothermal liquefaction
KW - Microalgae composition
KW - Oil quality
KW - Oil yield
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U2 - 10.1016/j.biortech.2013.12.074
DO - 10.1016/j.biortech.2013.12.074
M3 - Article
C2 - 24413449
AN - SCOPUS:84892458806
SN - 0960-8524
VL - 154
SP - 322
EP - 329
JO - Bioresource Technology
JF - Bioresource Technology
ER -