TY - JOUR
T1 - Biocrude oil production from Chlorella sp. cultivated in anaerobic digestate after UF membrane treatment
AU - Meng, Wang
AU - Xinfeng, Wang
AU - Zhangbing, Zhu
AU - Jianwen, Lu
AU - Zhang, Yuanhui
AU - Baoming, Li
AU - Haifeng, Lu
AU - Na, Duan
AU - Dongming, Zhang
AU - Taili, Dong
AU - Zhidan, Liu
N1 - Funding Information:
This study was financially supported by Natural Science Foundation of China (U1562107, 51576206), Beijing Science and Technology Program (Z161100001316009) and Beijing Youth Top-notch Talents Program (2015000026833ZK10). Mr. Wang Meng would like to thank Shandong Minhe Biological Technology Co., Ltd. (Penglai, China) for the supply of UF membrane treated anaerobic digestion effluent of chicken manure.
Publisher Copyright:
© 2017, Chinese Society of Agricultural Engineering. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Algae cultivation in animal wastewater could recover nutrient resources, and harvest considerable amount of algae biomass for biofuel conversion. In this study, Chlorella sp. cultivated in ultrafiltration (UF) membrane treated anaerobic digestion effluent of chicken manure was converted into biocrude oil through hydrothermal liquefaction (HTL). The potential of biocrude production from grown Chlorella sp. was studied through changing the operational conditions of HTL, i.e., holding temperature (HT, 250°C-330°C), retention time (RT, 0.5-1.5 h), and total solid (TS) (15 wt%-25 wt%) of the feedstock. The highest biocrude oil yield was 32.9% at 330°C, 1.5 h and 20 wt% TS. The single factor experiments of HT also suggested that the biocrude oil yield decreased when the temperature was higher than 330°C. There were no significant differences of elemental contents in biocrude samples. The maximum higher heating values (HHV) of Chlorella sp. biocrude was 40.04 MJ/kg at HT of 330°C, RT of 1 h and TS of 15 wt%. This study suggests the great potential for energy recovery from Chlorella sp. cultivated in UF membrane treated anaerobic digestion effluent via HTL.
AB - Algae cultivation in animal wastewater could recover nutrient resources, and harvest considerable amount of algae biomass for biofuel conversion. In this study, Chlorella sp. cultivated in ultrafiltration (UF) membrane treated anaerobic digestion effluent of chicken manure was converted into biocrude oil through hydrothermal liquefaction (HTL). The potential of biocrude production from grown Chlorella sp. was studied through changing the operational conditions of HTL, i.e., holding temperature (HT, 250°C-330°C), retention time (RT, 0.5-1.5 h), and total solid (TS) (15 wt%-25 wt%) of the feedstock. The highest biocrude oil yield was 32.9% at 330°C, 1.5 h and 20 wt% TS. The single factor experiments of HT also suggested that the biocrude oil yield decreased when the temperature was higher than 330°C. There were no significant differences of elemental contents in biocrude samples. The maximum higher heating values (HHV) of Chlorella sp. biocrude was 40.04 MJ/kg at HT of 330°C, RT of 1 h and TS of 15 wt%. This study suggests the great potential for energy recovery from Chlorella sp. cultivated in UF membrane treated anaerobic digestion effluent via HTL.
KW - Anaerobic digestion effluent
KW - Hydrothermal liquefaction
KW - Microalgae
KW - Wastewater
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U2 - 10.3965/j.ijabe.20171001.2700
DO - 10.3965/j.ijabe.20171001.2700
M3 - Article
AN - SCOPUS:85011392091
SN - 1934-6344
VL - 10
SP - 148
EP - 153
JO - International Journal of Agricultural and Biological Engineering
JF - International Journal of Agricultural and Biological Engineering
IS - 1
ER -