TY - JOUR
T1 - Biocrude Production from Wheat Straw at Sub and Supercritical Hydrothermal Liquefaction
AU - Seehar, Tahir Hussain
AU - Toor, Saqib
AU - Shah, Ayaz Ali
AU - Pedersen, Thomas Helmer
AU - Rosendahl, Lasse
PY - 2020/6/16
Y1 - 2020/6/16
N2 - In this study, hydrothermal liquefaction (HTL) of wheat straw (WS) in sub (350 °C) and supercritical (400 °C) water with and without alkali catalyst was performed to investigate the potential of WS for the production of biocrude. The influences of temperature and catalyst were studied for the HTL products. Results showed that maximum biocrude yield (32.34 wt. %) with least solid residue (4.34 wt. %) was obtained at subcritical catalytic condition, whereas the carbon content was slightly higher in biocrude at supercritical. The higher heating value (HHV) for biocrude is around 35 MJ/kg for all four conditions. The major compounds in biocrude were observed as ketones, alcohols, acids, and hydrocarbons. At 350 °C, 44–55% of the carbon recovered into biocrude. The products were characterized in terms of elemental composition, higher heating values, organics, and inorganic compounds in different phases. To keep in consideration the scale‐up of HTL process for continuous plant, aqueous phase from HTL was also recirculated which showed the fruitful outcomes by increasing the biocrude yield at each cycle.
AB - In this study, hydrothermal liquefaction (HTL) of wheat straw (WS) in sub (350 °C) and supercritical (400 °C) water with and without alkali catalyst was performed to investigate the potential of WS for the production of biocrude. The influences of temperature and catalyst were studied for the HTL products. Results showed that maximum biocrude yield (32.34 wt. %) with least solid residue (4.34 wt. %) was obtained at subcritical catalytic condition, whereas the carbon content was slightly higher in biocrude at supercritical. The higher heating value (HHV) for biocrude is around 35 MJ/kg for all four conditions. The major compounds in biocrude were observed as ketones, alcohols, acids, and hydrocarbons. At 350 °C, 44–55% of the carbon recovered into biocrude. The products were characterized in terms of elemental composition, higher heating values, organics, and inorganic compounds in different phases. To keep in consideration the scale‐up of HTL process for continuous plant, aqueous phase from HTL was also recirculated which showed the fruitful outcomes by increasing the biocrude yield at each cycle.
KW - Wheat straw
KW - sub‐supercritical HTL
KW - catalyst (K2CO3)
KW - Biocrude
KW - Inorganics
KW - aqueous phase recirculation
UR - http://www.scopus.com/inward/record.url?scp=85087930549&partnerID=8YFLogxK
U2 - 10.3390/en13123114
DO - 10.3390/en13123114
M3 - Journal article
SN - 1996-1073
VL - 13
JO - Energies
JF - Energies
IS - 12
M1 - en13123114
ER -