Co-hydrothermal liquefaction of Phumdi and Paragrass an aquatic biomass: Characterization of bio-oil, aqueous fraction and solid residue

Bijoy Biswas; Dinabandhu Sahoo; Rajeev K Sukumaran; Jitendra Kumar; Bhavya B Krishna; Yenumala Sudhakara Reddy; Velayudhanpillai Prasannakumari Adarsh; Anoop Puthiyamadam; Kiran Kumar Mallapureddy; Sabeela Beevi Ummalyma; Thallada Bhaskar

Authors

Bijoy Biswas Thermo-catalytic Processes Area (TPA), Material Resource Efficiency Division (MRED) CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India | Academy of Scientific and Innovative Research (AcSIR)
Dinabandhu Sahoo Fakir Mohan University, Balasore-756019, Odisha
Rajeev K Sukumaran Biofuels and Biorefineries Section, Microbial Processes and Technology Division (MPTD), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
Jitendra Kumar Thermo-catalytic Processes Area (TPA), Material Resource Efficiency Division (MRED) CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India | Academy of Scientific and Innovative Research (AcSIR)
Bhavya B Krishna Thermo-catalytic Processes Area (TPA), Material Resource Efficiency Division (MRED) CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India | Academy of Scientific and Innovative Research (AcSIR)
Yenumala Sudhakara Reddy Thermo-catalytic Processes Area (TPA), Material Resource Efficiency Division (MRED) CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India | Academy of Scientific and Innovative Research (AcSIR)
Velayudhanpillai Prasannakumari Adarsh Biofuels and Biorefineries Section, Microbial Processes and Technology Division (MPTD), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
Anoop Puthiyamadam Biofuels and Biorefineries Section, Microbial Processes and Technology Division (MPTD), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
Kiran Kumar Mallapureddy Biofuels and Biorefineries Section, Microbial Processes and Technology Division (MPTD), CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695019, India
Sabeela Beevi Ummalyma Institute of Bioresources and Sustainable DevelopmentSikkim Centre, Gangtok 737102, India
Thallada Bhaskar Thermo-catalytic Processes Area (TPA), Material Resource Efficiency Division (MRED) CSIR-Indian Institute of Petroleum (IIP), Dehradun 248005, India | Academy of Scientific and Innovative Research (AcSIR)

Keywords:

Aquatic biomass, Co-hydrothermal liquefaction, solvents effect, Bio-oil, Ester compounds

Abstract

Hydrothermal liquefaction (HTL)of Paragrass (PG) and Phumdi (PH) and a mixture of (PG-PH) a wet aquatic biomass were examined. Reaction parameters such as temperatures (260, 280, and 300 °C) and solvents (water, ethanol, and methanol) were screened on the products distribution and characterization. The maximum bio-oil yield (13.82 wt.%) was observed for PG under water solvent. However, when a mixture of biomass (PG-PH) was used in HTL, the maximum bio-oil yield was 11.66 wt.%under ethanol solvent. While, maximum conversion of 98.4 wt.% was found with water solvent at 300 °C for PH biomass. PH and PG biomass when liquefied alone, majorly produced ester compounds (49.21 and 52.58%under ethanol solvent. Whereas, co-liquefaction bio-oil consisted of phenolic compounds, 67.49% with ethanol as solvent followed by 50.84% in water and 49.59% in methanol.Higher carbon conversion efficiency (69.8%) observed in case of PH biomass under water solvent. The PG-PH liquefaction aqueous fraction showed significantly higher (57000 mg/L) organic carbon. Obvious the difference of products yield and compounds found during liquefaction reaction it’s ascribed the distinct effect of solvents and temperatures on biomass macromolecule breakdown.