Article Dans Une Revue Science of the Total Environment Année : 2022

Circular bioeconomy: Life cycle assessment of scaled-up cascading production from orange peel waste under current and future electricity mixes

Résumé

Orange peel waste (OPW) is present in large quantities both locally and globally, which makes them feasible input into the circular bioeconomy. However, due to their antimicrobial and antinutritional activity, they are problematic biomass, and proper waste management is yet to be determined. This life cycle assessment (LCA) quantifies the environmental performance of biorefinery producing limonene, citric acid, and animal feed from OPW generated from juice factories. Only previously assessed sustainable technologies were considered (cold press, microwave extraction, solid-state fermentation). The life cycle inventories were refined by a scale-up procedure to reflect industrial production at i) 0.5t, ii) 100t, and iii) 1000t of OPW weekly. The data were translated per functional unit of 1 tonne OPW. Three electricity mixes and both attributional (average) and consequential (marginal) inventories were compared. Results showed that the environmental performance, in particular for climate change, was essentially dependent upon the electricity input, with 4388 CO2 eq for current electricity mix, 2404 CO2 eq using renewable, and 594 CO2 eq using electricity from wind. Business-as-usual scenarios for OPW (incineration and animal feed) showed better performance in most scenarios, representing-150 CO2 eq (animal feed) and-135 CO2 eq (incineration) in the climate change. Lower impacts are reached due to avoided impacts of fossil fuel use and conventional feed cultivation. Renewable energy had better environmental performance than the current electricity mix, except for eutrophication, due to digestate spreading associated with biogas use, calling for mitigation action. Our results suggest that stopping the biorefinery processes SSF solid-state fermentation TRL technology readiness level RoW Rest of the world

Fichier principal
Vignette du fichier
Teigiserova et al STOTEN 2022.pdf (2.18 Mo) Télécharger le fichier
ScienceDirect_files_02Aug2022_15-04-19.308.zip (7.8 Mo) Télécharger le fichier
Origine Publication financée par une institution
Licence

Dates et versions

hal-03742897 , version 1 (02-08-2022)

Licence

Identifiants

Citer

Dominika Alexa Teigiserova, Lorie Hamelin, Ligia Tiruta-Barna, Aras Ahmadi, Marianne Thomsen. Circular bioeconomy: Life cycle assessment of scaled-up cascading production from orange peel waste under current and future electricity mixes. Science of the Total Environment, 2022, 812, ⟨10.1016/j.scitotenv.2021.152574⟩. ⟨hal-03742897⟩
88 Consultations
410 Téléchargements

Altmetric

Partager

  • More