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oai:uvadoc.uva.es:10324/732612025-01-09T20:06:05Zcom_10324_1173com_10324_931com_10324_894col_10324_1371

García Depraect, Octavio Martínez Mendoza, Leonardo José Aragão Börner, Rosa Zimmer, Johannes Muñoz Torre, Raúl 2025-01-09T08:44:55Z 2025-01-09T08:44:55Z 2024 Bioresource Technology, septiembre 2024, vol. 408, 131180 0960-8524 https://uvadoc.uva.es/handle/10324/73261 10.1016/j.biortech.2024.131180 131180 Bioresource Technology 408 This study evaluates the anaerobic mesophilic mono- and co-digestion of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH) plastic bottles as a proxy for rigid packaging materials. Initial tests showed a 97.3 ± 0.2 % reduction in weight and an observable alteration in the surface (thinning, color fading and pitting) of the PHBH bottles after eight weeks. Subsequent tests showed that PHBH squares (3 × 3 cm) produced 400 NmL-CH4/g-VSfed, at a slower rate compared to powdered PHBH but with similar methane yield. Co-digestion experiments with food waste, swine manure, or sewage sludge showed successful digestion of PHBH alongside organic waste (even at a high bioplastic loading of 20 % volatile solids basis), with methane production comparable to or slightly higher than that observed in mono-digestion. Molecular analyses suggested that the type of co-substrate influenced microbial activity and that methane production was mainly driven by hydrogenotrophic methanogenesis. These results suggest the potential for integrating rigid PHBH packaging into anaerobic digesters. eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc/4.0/ © 2024 The Author(s) Atribución-NoComercial 4.0 Internacional Biomethanization of rigid packaging made entirely of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate): Mono- and co-digestion tests and microbial insights info:eu-repo/semantics/article