TY - JOUR
T1 - Microalgae production for bioenergy from post hydrothermal liquefaction wastewater
T2 - Effects of strain, nutrients concentration and inoculum size on microalgae culture
AU - Li, Zhang
AU - Haifeng, Lu
AU - Zhang, Yuanhui
AU - Shanshan, Ma
AU - Baoming, Li
AU - Zhidan, Liu
AU - Na, Duan
AU - Minsheng, Liu
AU - Buchun, Si
AU - Jianwen, Lu
N1 - Funding Information:
This work is supported by the National Natural Science Foundation of China (51576206, 51308535) and Beijing Science and Technology Program (Z161100001316009)..
Publisher Copyright:
© 2017, Chinese Society of Agricultural Engineering. All rights reserved.
PY - 2017
Y1 - 2017
N2 - Cultivating microalgae in post hydrothermal liquefaction wastewater (PHWW) offers many benefits, including nutrients recovery and reuse, wastewater purification and biomass production. However, the high nutrients concentration and toxic substances in PHWW undermine the efficiency of biomass production and nutrient recovery. This study aimed to investigate the effects of the microalgae strains, initial nutrients concentrations and inoculum sizes on biomass production and nutrient recovery using PHWW as the cultivation medium. Results indicated that both biomass production and nutrients recovery were successfully improved by using the screened microalgae strain at the desirable initial nutrient concentration with the suggested algae inoculum size. Chlorella vulgaris 1067 probably demonstrated the strongest tolerance ability among the five microalgae strains screened, and performed well in the diluted PHWW, of which initial TN concentration was approximately 500 mg/L. The desirable inoculum size was determined to be 0.103-0.135 g/L. The biomass daily productivity was increased by 15.67-fold (reached to 0.13 g/(L·d)). With the above optimal conditions, high biomass production and nutrient recovery from the PHWW to produce microalgae biomass for bioenergy production were achieved.
AB - Cultivating microalgae in post hydrothermal liquefaction wastewater (PHWW) offers many benefits, including nutrients recovery and reuse, wastewater purification and biomass production. However, the high nutrients concentration and toxic substances in PHWW undermine the efficiency of biomass production and nutrient recovery. This study aimed to investigate the effects of the microalgae strains, initial nutrients concentrations and inoculum sizes on biomass production and nutrient recovery using PHWW as the cultivation medium. Results indicated that both biomass production and nutrients recovery were successfully improved by using the screened microalgae strain at the desirable initial nutrient concentration with the suggested algae inoculum size. Chlorella vulgaris 1067 probably demonstrated the strongest tolerance ability among the five microalgae strains screened, and performed well in the diluted PHWW, of which initial TN concentration was approximately 500 mg/L. The desirable inoculum size was determined to be 0.103-0.135 g/L. The biomass daily productivity was increased by 15.67-fold (reached to 0.13 g/(L·d)). With the above optimal conditions, high biomass production and nutrient recovery from the PHWW to produce microalgae biomass for bioenergy production were achieved.
KW - Biomass production
KW - Initial nutrient concentration
KW - Inoculum size
KW - Microalgae strain screening
KW - Nutrient recovery
KW - Post hydrothermal liquefaction wastewater
UR - http://www.scopus.com/inward/record.url?scp=85016970964&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85016970964&partnerID=8YFLogxK
U2 - 10.3965/j.ijabe.20171002.2882
DO - 10.3965/j.ijabe.20171002.2882
M3 - Article
AN - SCOPUS:85016970964
VL - 10
SP - 194
EP - 204
JO - International Journal of Agricultural and Biological Engineering
JF - International Journal of Agricultural and Biological Engineering
SN - 1934-6344
IS - 2
ER -