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Sustainable hydrogen production from oil palm derived wastes through autothermal operation of supercritical water gasification system
Ruya P.M.a, Lim S.S.b, Purwadi R.a, Zunita M.a
a Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
b Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, 43500, Malaysia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2020 Elsevier LtdHydrogen generation from empty fruit bunch and palm oil mill effluent through supercritical water gasification was studied on system level. The effect of alternative H2 separation process (Palladium Membrane or Pressure Swing Adsorption), H2S adsorption (zinc oxide or activated carbon) and inclusion of steam methane reformer on net H2 yield and system efficiency were examined under auto-thermal operation. Waste heat recovery by generating low pressure steam utilizable in palm oil mill were conducted to minimize exergy loss. At the lowest biomass concentration considered in this study (15 wt% empty fruit bunch), inclusion of steam methane reformer reduced the net H2 yield as product gas was mainly used as fuel. However, at high biomass concentration (25 wt% empty fruit bunch and palm oil mill effluent), the net H2 yield increased by up to 98%. Energy efficiency of 70% (without reformer) and 58.3% (with reformer) was achieved using high biomass concentration under optimal operating condition for H2 production. Exergy analysis revealed that 62.5–70.8% of total exergy loss was attributed to furnace and gasifier. Energy utilization diagram further revealed about 72–87% of the unit exergy loss was attributed to feed preheating. Waste heat recovery through steam generation raised the system efficiency by 5–18%.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Auto-thermal operation,Biomass concentrations,Optimal operating conditions,Palladium (Pd) membranes,Palm oil mill effluents,Pressure swing adsorption,Steam methane reformers,Supercritical water gasification[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Autothermal process,Exergy analysis,Hydrogen,Process integration,Supercritical water gasification[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]The author would like to thank PT Socfin Indonesia for the assistance given during the sampling of Palm Oil Mill Effluent. The authors are sincerely grateful the advice from Professor Herri Susanto. This research did not receive any specific grant from any funding agencies in the public, commercial, or not-for-profit sectors.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.energy.2020.118280[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]