TY - JOUR
T1 - Integrated anaerobic digestion and algae cultivation for energy recovery and nutrient supply from post-hydrothermal liquefaction wastewater
AU - Yang, Libin
AU - Si, Buchun
AU - Tan, Xiaobo
AU - Chu, Huaqiang
AU - Zhou, Xuefei
AU - Zhang, Yuanhui
AU - Zhang, Yalei
AU - Zhao, Fangchao
N1 - Funding Information:
This work was financially supported by the National Natural Science Foundation of China , China (NO. 51778448 , NO. 51625804 ). We also appreciate the support from the Shanghai Rising-Star program , China (NO. 17QC1400400 ) and the China Scholarship Council , China (CSC).
Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/10
Y1 - 2018/10
N2 - Post-hydrothermal liquefaction wastewater (PHWW), which contains approximately 80% of original feedstock resources, shows great potential to achieve sustainable development of an environment-enhancing energy system. A combination of anaerobic digestion and algae cultivation was proposed for methane recovery and nutrient supply from PHWW. Granular activated carbon (GAC) and ozone were used to enhance energy recovery from the PHWW. The results indicated that with GAC addition, the maximum methane yield increased by 67.7%–228 mL/g CODremoval. In addition, Chlorella vulgaris displayed optimal growth in a 5-fold diluted digestate with a 2.32 g/L maximum biomass content and 180 mg/(L·d) biomass production rate. The total energy yield was 565 kJ/g COD, which was 27.4 times higher than that without GAC. Integration of anaerobic digestion and algae cultivation, particularly with GAC addition during fermentation, is a feasible and advantageous process for energy recovery from PHWW.
AB - Post-hydrothermal liquefaction wastewater (PHWW), which contains approximately 80% of original feedstock resources, shows great potential to achieve sustainable development of an environment-enhancing energy system. A combination of anaerobic digestion and algae cultivation was proposed for methane recovery and nutrient supply from PHWW. Granular activated carbon (GAC) and ozone were used to enhance energy recovery from the PHWW. The results indicated that with GAC addition, the maximum methane yield increased by 67.7%–228 mL/g CODremoval. In addition, Chlorella vulgaris displayed optimal growth in a 5-fold diluted digestate with a 2.32 g/L maximum biomass content and 180 mg/(L·d) biomass production rate. The total energy yield was 565 kJ/g COD, which was 27.4 times higher than that without GAC. Integration of anaerobic digestion and algae cultivation, particularly with GAC addition during fermentation, is a feasible and advantageous process for energy recovery from PHWW.
KW - Energy recovery
KW - Environment-enhancing energy
KW - Granular activated carbon
KW - Nutrient supply
KW - Post-hydrothermal liquefaction wastewater (PHWW)
UR - http://www.scopus.com/inward/record.url?scp=85049826532&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85049826532&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2018.06.083
DO - 10.1016/j.biortech.2018.06.083
M3 - Article
C2 - 29982057
AN - SCOPUS:85049826532
SN - 0960-8524
VL - 266
SP - 349
EP - 356
JO - Bioresource Technology
JF - Bioresource Technology
ER -