TY - JOUR
T1 - Catalytic upgrading of bio-oil produced from hydrothermal liquefaction of Nannochloropsis sp.
AU - Shakya, Rajdeep
AU - Adhikari, Sushil
AU - Mahadevan, Ravishankar
AU - Hassan, El Barbary
AU - Dempster, Thomas
N1 - Funding Information:
The authors would like to acknowledge United States National Science Foundation ( NSF-CBET- 1333372 ), Alabama Agricultural Experiment Station ( ALA014-1-13006 ), Auburn University-Intramural Grant Program (AU-IGP-150200) and NSF Alabama-EPSCoR's Graduate Research Scholars Program (GRSP-2016-11) for funding this study. This work is part of the first author’s requirements for the degree of Ph.D. at Auburn University. Authors are thankful to Dr. Zhouhong Wang for his help in simulated distillation. However, only the authors are responsible for any remaining errors in this manuscript. Appendix A
Funding Information:
The authors would like to acknowledge United States National Science Foundation (NSF-CBET- 1333372), Alabama Agricultural Experiment Station (ALA014-1-13006), Auburn University-Intramural Grant Program (AU-IGP-150200) and NSF Alabama-EPSCoR's Graduate Research Scholars Program (GRSP-2016-11) for funding this study. This work is part of the first author's requirements for the degree of Ph.D. at Auburn University. Authors are thankful to Dr. Zhouhong Wang for his help in simulated distillation. However, only the authors are responsible for any remaining errors in this manuscript.
Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2018/3
Y1 - 2018/3
N2 - Upgrading of bio-oil obtained from hydrothermal liquefaction (HTL) of algae is necessary for it to be used as a fuel. In this study, bio-oil obtained from HTL of Nannochloropsis sp. was upgraded using five different catalysts (Ni/C, ZSM-5, Ni/ZSM-5, Ru/C and Pt/C) at 300 °C and 350 °C. The upgraded bio-oil yields were higher at 300 °C; however, higher quality upgraded bio-oils were obtained at 350 °C. Ni/C gave the maximum upgraded bio-oil yield (61 wt%) at 350 °C. However, noble metal catalysts (Ru/C and Pt/C) gave the better upgraded bio-oils in terms of acidity, heating values, and nitrogen values. The higher heating value of the upgraded bio-oils ranged from 40 to 44 MJ/kg, and the nitrogen content decreased from 5.37 to 1.29 wt%. Most of the upgraded bio-oils (35–40 wt%) were in the diesel range. The major components present in the gaseous products were CH4, CO, CO2 and lower alkanes.
AB - Upgrading of bio-oil obtained from hydrothermal liquefaction (HTL) of algae is necessary for it to be used as a fuel. In this study, bio-oil obtained from HTL of Nannochloropsis sp. was upgraded using five different catalysts (Ni/C, ZSM-5, Ni/ZSM-5, Ru/C and Pt/C) at 300 °C and 350 °C. The upgraded bio-oil yields were higher at 300 °C; however, higher quality upgraded bio-oils were obtained at 350 °C. Ni/C gave the maximum upgraded bio-oil yield (61 wt%) at 350 °C. However, noble metal catalysts (Ru/C and Pt/C) gave the better upgraded bio-oils in terms of acidity, heating values, and nitrogen values. The higher heating value of the upgraded bio-oils ranged from 40 to 44 MJ/kg, and the nitrogen content decreased from 5.37 to 1.29 wt%. Most of the upgraded bio-oils (35–40 wt%) were in the diesel range. The major components present in the gaseous products were CH4, CO, CO2 and lower alkanes.
KW - Algae
KW - Bio-oil
KW - Catalytic upgrading
KW - Hydrodenitrogenation
KW - Hydrothermal liquefaction
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U2 - 10.1016/j.biortech.2017.12.067
DO - 10.1016/j.biortech.2017.12.067
M3 - Article
C2 - 29306126
AN - SCOPUS:85040010944
SN - 0960-8524
VL - 252
SP - 28
EP - 36
JO - Bioresource Technology
JF - Bioresource Technology
ER -