Bioplastics are increasingly replacing traditional plastics in many sectors, but the legislative and operative frameworks for their disposal remain unclear: they should be collected and treated together with the organic fraction of municipal solid waste (OFMSW), but often do not biodegrade satisfactorily in the plants that treat OFMSW. This work focuses on a type of cellulose diacetate employed in the eyewear industry to analyse hydrothermal carbonization (HTC) as a pre-treatment before anaerobic digestion (AD). The results show that HTC can hydrolyse this bioplastic even at mod-erate temperatures, reaching an almost total dissolution in the liquid phase at 210°C and, at higher temperatures, producing hydrochar. When the HTC slurry obtained at 210°C is fed to mesophilic or thermophilic AD, both the amount and the production rate of biogas are enhanced compared to the raw bioplastic. In particular, in ther-mophilic conditions, the amount of produced biogas undergoes at least a threefold increase compared to the untreated cellulose diacetate. Thus, this work confirms that a prior HTC step may be a suitable approach to enhance the disposal and energy recovery of bioplastics through AD.

VALORISATION OF EYEWEAR BIOPLASTICS THROUGH HTC AND ANAEROBIC DIGESTION: PRELIMINARY RESULTS / Marchelli, F.; Ferrentino, R.; Ischia, G.; Calvi, M.; Andreottola, G.; Fiori, L.. - In: DETRITUS. - ISSN 2611-4127. - 23:23(2023), pp. 35-42. [10.31025/2611-4135/2023.18275]

VALORISATION OF EYEWEAR BIOPLASTICS THROUGH HTC AND ANAEROBIC DIGESTION: PRELIMINARY RESULTS

Marchelli F.;Ferrentino R.;Ischia G.;Andreottola G.;Fiori L.
2023-01-01

Abstract

Bioplastics are increasingly replacing traditional plastics in many sectors, but the legislative and operative frameworks for their disposal remain unclear: they should be collected and treated together with the organic fraction of municipal solid waste (OFMSW), but often do not biodegrade satisfactorily in the plants that treat OFMSW. This work focuses on a type of cellulose diacetate employed in the eyewear industry to analyse hydrothermal carbonization (HTC) as a pre-treatment before anaerobic digestion (AD). The results show that HTC can hydrolyse this bioplastic even at mod-erate temperatures, reaching an almost total dissolution in the liquid phase at 210°C and, at higher temperatures, producing hydrochar. When the HTC slurry obtained at 210°C is fed to mesophilic or thermophilic AD, both the amount and the production rate of biogas are enhanced compared to the raw bioplastic. In particular, in ther-mophilic conditions, the amount of produced biogas undergoes at least a threefold increase compared to the untreated cellulose diacetate. Thus, this work confirms that a prior HTC step may be a suitable approach to enhance the disposal and energy recovery of bioplastics through AD.
2023
23
Marchelli, F.; Ferrentino, R.; Ischia, G.; Calvi, M.; Andreottola, G.; Fiori, L.
VALORISATION OF EYEWEAR BIOPLASTICS THROUGH HTC AND ANAEROBIC DIGESTION: PRELIMINARY RESULTS / Marchelli, F.; Ferrentino, R.; Ischia, G.; Calvi, M.; Andreottola, G.; Fiori, L.. - In: DETRITUS. - ISSN 2611-4127. - 23:23(2023), pp. 35-42. [10.31025/2611-4135/2023.18275]
File in questo prodotto:
File Dimensione Formato  
2023_Detritus_Bioplastics.pdf

accesso aperto

Tipologia: Versione editoriale (Publisher’s layout)
Licenza: Creative commons
Dimensione 633.96 kB
Formato Adobe PDF
633.96 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/388132
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact