TY - JOUR
T1 - Enhancement of C–C and C–H bond cleavage and hydrogen yield performance from waste food process by using ruthenium/alumina catalyst via supercritical water gasification process
AU - Soudagar, Manzoore Elahi M.
AU - Singh, Pradeep Kumar
AU - Jadhav, Abhilasha
AU - T, Sudhakar
AU - Thirugnanasambandham, T.
AU - Mohanavel, Vinayagam
AU - Sathiyamurthy, S.
AU - Gnanasekaran, Lalitha
AU - Ayyar, Manikandan
N1 - Publisher Copyright:
© 2025 Hydrogen Energy Publications LLC
PY - 2025/9/22
Y1 - 2025/9/22
N2 - Current research is enriching carbon-carbon (C–C) and carbon-hydrogen (C–H) bonds in organic molecules and hydrogen from food wastes, which is blended with 30 % of algae help boost the reaction via supercritical water gasification (SCWG) process and its performance investigated without catalyst and with 1-3 wt% of ruthenium/alumina (Ru/Al2O3) catalyst underwater to biomass ratios of 5:1, which is involved at 25 MPa pressure with 700 °C gasification temperature for 60 min residence time. The influences of catalyst action on molar fraction percentage, syngas yield, carbon gasification efficiency, hydrogen selectivity, and carbon dioxide selectivity are studied in the present research. Based on the investigational results, the 5:1 ratios of water to biomass (70 % food waste/30 % algae booster) processed via SCWG process featured with Ru/Al2O3 catalyst showed the optimum performances and 3 wt% of Ru/Al2O3 catalyst recorded maximum hydrogen (H2) fraction of 74.3 %, reduced carbon dioxide (CO2) fraction of 19.8 %, enhanced H2 yield of 72.3 mol/kg, improved carbon gasification efficiency of 94.6 %, higher H2 selectivity of 90.2 % and decreased CO2 selectivity of 62.5 %. Moreover, combinations of food waste and 30 % of algae processed with the SCWG process, featuring a Ru/Al2O3 catalyst, provide maximum C–C and C–H bonds, resulting in a superior hydrogen yield.
AB - Current research is enriching carbon-carbon (C–C) and carbon-hydrogen (C–H) bonds in organic molecules and hydrogen from food wastes, which is blended with 30 % of algae help boost the reaction via supercritical water gasification (SCWG) process and its performance investigated without catalyst and with 1-3 wt% of ruthenium/alumina (Ru/Al2O3) catalyst underwater to biomass ratios of 5:1, which is involved at 25 MPa pressure with 700 °C gasification temperature for 60 min residence time. The influences of catalyst action on molar fraction percentage, syngas yield, carbon gasification efficiency, hydrogen selectivity, and carbon dioxide selectivity are studied in the present research. Based on the investigational results, the 5:1 ratios of water to biomass (70 % food waste/30 % algae booster) processed via SCWG process featured with Ru/Al2O3 catalyst showed the optimum performances and 3 wt% of Ru/Al2O3 catalyst recorded maximum hydrogen (H2) fraction of 74.3 %, reduced carbon dioxide (CO2) fraction of 19.8 %, enhanced H2 yield of 72.3 mol/kg, improved carbon gasification efficiency of 94.6 %, higher H2 selectivity of 90.2 % and decreased CO2 selectivity of 62.5 %. Moreover, combinations of food waste and 30 % of algae processed with the SCWG process, featuring a Ru/Al2O3 catalyst, provide maximum C–C and C–H bonds, resulting in a superior hydrogen yield.
KW - Biomass
KW - Carbon gasification efficiency
KW - Catalyst
KW - Gas yield
KW - Hydrogen
UR - https://www.scopus.com/pages/publications/105014509065
U2 - 10.1016/j.ijhydene.2025.151286
DO - 10.1016/j.ijhydene.2025.151286
M3 - Article
AN - SCOPUS:105014509065
SN - 0360-3199
VL - 170
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
M1 - 151286
ER -
