2026-10-14T05:34:45Z https://api.figshare.com/v2/oai

oai:figshare.com:article/33991382 2026-09-25T02:05:29Z category_4 category_14 category_272 category_873 category_39 category_734 portal_63 item_type_3 month_year_09_2026

Autothermal Biomass and Plastic Cogasification for Hydrogen-Rich Syngas Production: Process and Sustainability Assessment Manu Suvarna (11171502) Ziying Sun (9486908) Xiaonan Wang (276308) Biochemistry Molecular Biology Environmental Sciences not elsewhere classified Chemical Sciences not elsewhere classified Ecology Biological Sciences not elsewhere classified sustainability assessment transitioning manage carbon emissions lower heating value life cycle assessment impact reductions exceed 900 ° c 6 mj nm including global warming syngas production aimed rich syngas production produced syngas via cogasification feed stream 2 </ sub wgsr ), co wgsr increased including gasification feed ratio plastic cogasification biomass cogasification valorize waste terrestrial acidification technical feasibility sustainable energy renewable energy power generation plastic waste partially recycled optimized plastic methanol synthesis lca highlights lca ). holistic framework fossil depletion energy content emerging technology electricity generation circular strategy chemical synthesis biomass ratio autothermal biomass analysis reveals Transitioning to sustainable energy and chemical systems requires circular pathways that valorize waste, manage carbon emissions, and meet global energy demands. Plastic waste and biomass cogasification in the presence of CO₂ to produce hydrogen-rich syngas offer viable pathways for power generation and chemical synthesis, but their technical feasibility and environmental implications remain underexplored. To address this gap, we present a holistic framework for this emerging technology, including gasification, water–gas shift reaction (WGSR), CO₂ capture and recycle, and life cycle assessment (LCA). Our analysis reveals an optimized plastic-to-biomass ratio of 1:4 and a steam-to-feed ratio of 0.3:1 at 900 °C and produces syngas containing 62 mol % combined H₂ and CO, at a 1.2:1 ratio and a lower heating value of 8.6 MJ Nm^3–. Process intensification of the produced syngas via the WGSR increased the H₂/CO ratio to 2:1 while preserving its energy content, and 91% of the CO₂ in the syngas is removed via amine absorption and partially recycled to the cogasification feed stream. Finally, LCA highlights that syngas from plastic–biomass cogasification outperforms fossil feedstocks for electricity generation and methanol synthesis. Impact reductions exceed by 40% across multiple endpoint indicators, including global warming, fossil depletion, terrestrial acidification, and particulate matter formation potentials. Our results underscore plastic–biomass cogasification as a circular strategy for syngas production aimed at renewable energy or chemical synthesis. 2026-09-24T00:00:00Z Dataset Dataset 10.1021/acs.iecr.6c02744.s002 https://figshare.com/articles/dataset/Autothermal_Biomass_and_Plastic_Cogasification_for_Hydrogen-Rich_Syngas_Production_Process_and_Sustainability_Assessment/33991382 CC BY-NC 4.0