利用海鲜贝壳废弃物制取可再生氢气用于岛屿长期储能

Abstract This study explores the potential of renewable seafood shell waste for sustainable energy conversion and long-term storage, particularly for isolated communities. Despite its rich chitin and protein composition, seafood shell waste is often neglected. The research evaluates and compares three advanced gasification technologies: biomass gasification, plasma gasification, and chemical looping, to convert seafood shell waste into syngas and H 2 . The study uses validated Aspen Plus models to optimize feedstock blending ratios and operational parameters. Results show that feedstocks high in lobster and shrimp shells yield higher H 2 outputs and improved syngas quality compared to clam-dominated blends. For instance, biomass gasification at 1200 °C yielded approximately 500 kg/h of H 2 from pure lobster or shrimp feeds, while plasma gasification at 4500 °C achieved yields near 730 kg/h. Plasma gasification, when integrated with fuel cell conversion and heat recovery systems, can generate over 10,000 kWh during a 6-hour peak period, enough to power over 1100 single-detached homes. Its levelized cost of hydrogen (LCOH) varies from $5.72-$8.37/kg H 2 , making it less expensive than chemical looping and biomass gasification. Plasma gasification also has the lowest global warming potential (GWP) at 6 kg CO 2 e/kg H 2 . Combining plasma gasification with carbon capture and storage may reduce GWP to 0.3 kg CO 2 e/kg H 2 and can be further explored. These findings underscore the technical and economic viability of converting seafood shell renewable waste into H 2 , advancing sustainable energy transitions, and supporting net-zero goals.