TY - JOUR
T1 - Hydrothermal conversion of anaerobic wastewater fed microalgae
T2 - Effects of reaction temperature on products distribution and biocrude properties
AU - Li, Hugang
AU - Liu, Zhidan
AU - Wang, Meng
AU - Lu, Jianwen
AU - Bultinck, Trevor
AU - Wang, Yingxian
AU - Wang, Xinfeng
AU - Zhang, Yuanhui
AU - Lu, Haifeng
AU - Duan, Na
AU - Li, Baoming
AU - Zhang, Dongming
AU - Dong, Taili
N1 - Publisher Copyright:
© The Institution of Engineering and Technology 2019
PY - 2019/9/9
Y1 - 2019/9/9
N2 - Microalgae using non-arable land were considered as promising biomass for biocrude production through hydrothermal liquefaction (HTL) and can also be used for environmentally-friendly wastewater treatment. In this study, we illuminated the effect of reaction temperature on the products distribution and biocrude properties from HTL of the Chlorella sp. grown in wastewater from anaerobic digestion (AD) of chicken manure via HTL. The highest biocrude yield (30.35%, daf) and energy recovery rate (49.6%) were both achieved at 330 °C, while the highest HHV (37.17 MJ/kg) of biocrude oil was achieved at 290 °C. The biocrude oil yield increased from 25.46 to 30.35% as the temperature increased from 270 to 330 °C. The gases yield showed a similar trend under 310 °C. On the contrary, the solid products yield decreased as the temperature approached 350 °C. The lowest nitrogen content (4.6%) and highest H/C (1.50) of biocrude oil were obtained at 290 and 270 °C, respectively. Results imply that deoxygenation was enhanced with temperature due to the enhanced decarboxylation at higher temperatures. Specially, the nitrogen content decreased by 39.4-47.4% in the temperature range of 270-350 °C. The integrated pathways for energy production and nutrient recycling from animal manure coupling AD/HTL, and algae technologies were further proposed.
AB - Microalgae using non-arable land were considered as promising biomass for biocrude production through hydrothermal liquefaction (HTL) and can also be used for environmentally-friendly wastewater treatment. In this study, we illuminated the effect of reaction temperature on the products distribution and biocrude properties from HTL of the Chlorella sp. grown in wastewater from anaerobic digestion (AD) of chicken manure via HTL. The highest biocrude yield (30.35%, daf) and energy recovery rate (49.6%) were both achieved at 330 °C, while the highest HHV (37.17 MJ/kg) of biocrude oil was achieved at 290 °C. The biocrude oil yield increased from 25.46 to 30.35% as the temperature increased from 270 to 330 °C. The gases yield showed a similar trend under 310 °C. On the contrary, the solid products yield decreased as the temperature approached 350 °C. The lowest nitrogen content (4.6%) and highest H/C (1.50) of biocrude oil were obtained at 290 and 270 °C, respectively. Results imply that deoxygenation was enhanced with temperature due to the enhanced decarboxylation at higher temperatures. Specially, the nitrogen content decreased by 39.4-47.4% in the temperature range of 270-350 °C. The integrated pathways for energy production and nutrient recycling from animal manure coupling AD/HTL, and algae technologies were further proposed.
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U2 - 10.1049/iet-rpg.2018.6278
DO - 10.1049/iet-rpg.2018.6278
M3 - Article
AN - SCOPUS:85071242241
SN - 1752-1416
VL - 13
SP - 2215
EP - 2220
JO - IET Renewable Power Generation
JF - IET Renewable Power Generation
IS - 12
ER -