20.500.12556/DKUM-90510 Energy demand distribution and environmental impact assessment of chitosan production from shrimp shells Step towards resilience and sustainability through exploring renewable biomass and waste streams to produce higher-added value products and energy is among key aspects for closing the loops, saving resources, and reducing the resource and emission footprints. In that respective, crustacean shells waste can offer rich spectre of valuable compounds such as proteins, chitin, carotenoids. This waste is produced in large quantities worldwide, thus allowing for commercial valorisation. An overview of technologies is undertaken for more sustainable and environmentally friendly chitosan production via chitin isolation and conversion and compared to the conventional processes. Furthermore, an assessment of the environmental burden and energy demand distribution for conventional and more sustainable alternative processes was performed, based on lab-scale experimental data. Three different chitin extraction routes and three distinct chitosan conversion processes were considered and compared for their greenhouse gas footprint, abiotic depletion, acidification, eutrophication and other potentials. Finally, the energy demand distribution was analysed considering electricity production patterns from three European countries, Slovenia, Portugal and Norway. The results showed that alternatives 3-A and 3-B (conventional eco-solvents - conventional deacetylation with 40 % and 50 % NaOH) generate the lowest environmental burden (184 g CO2 eq./g chitosan). Electricity was the main hotspot of the processes, used either for extraction, plasma treatment or deacetylation. The sensitivity analysis proved that the Norwegian electricity mix has the lowest environmental impact (4.2 g CO2 eq./g chitosan). This study highlights the impact of blue biorefineries by transforming marine waste to valuable biopolymers such as chitin and chitosan. shrimp shells waste blue biorefinery value-added products chitosan sustainable production comparative environmental assessment odpadki lupine kozic citosan trajnostna proizvodnja okoljska presoja true false true Elsevier Ltd. Angleški jezik Slovenski jezik https://www.sciencedirect.com/science/article/pii/S1364032123010626?via%3Dihub © 2023 The Authors Članek v reviji 2024-09-06 03:52:48 2025-01-08 14:20:48 2025-05-26 07:50:50 0000-00-00 00:00:00 2024 0 0 str. 1-25 article no. 114204 Vol. 192 March 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2023-01-31 2023-12-09 2024-03-01 66.01 179582211 10.1016/j.rser.2023.114204 1879-0690 1-s2.0-S1364032123010626-main.pdf 1-s2.0-S1364032123010626-main.pdf 1 118A2F2754C94767AC668710793A4270 ff2aed47fa97ca44ae875f7ea617cede15c8a9176466140c438576abdbce612a 118b9771-cdc4-11ef-9362-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=187694 https://www.sciencedirect.com/science/article/pii/S1364032123010626?via%3Dihub 0 60d4d581-39f5-11f0-80b9-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=191247 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0