Life cycle assessment of hetero- and phototrophic as well as combined cultivations of Galdieria sulphuraria.
Bioeconomy
Biomass
Carbon dioxide exchange
Environmental impact
Oxygen exchange
Journal
Bioresource technology
ISSN: 1873-2976
Titre abrégé: Bioresour Technol
Pays: England
ID NLM: 9889523
Informations de publication
Date de publication:
Sep 2021
Sep 2021
Historique:
received:
19
03
2021
revised:
22
04
2021
accepted:
23
04
2021
pubmed:
17
5
2021
medline:
8
6
2021
entrez:
16
5
2021
Statut:
ppublish
Résumé
Microalgae cultivation for food purposes could have high environmental impacts. The study performed life cycle assessment (LCA) of hypothetical model combining phototrophic and heterotrophic cultivations, exchanging produced gases (carbon dioxide from heterotrophic and oxygen from autotrophic) as a potential strategy to reduce the environmental impact of microalgae cultivation. The LCA indicated that the production of Galdieria sulphuraria in a combined cultivation system has environmental benefits compared with the separate phototrophic cultivation and an almost twice lower carbon footprint than phototrophic cultivation. The benefits are based on the lower volume of culture broth and consequently reduced energy demand as well as less demanding wastewater treatment of the heterotrophic cultivation. Such combination of cultivation activities could be recommended to the producers dealing with phototrophic cultivation as a sustainable strategy for the environmental impact reduction.
Identifiants
pubmed: 33992913
pii: S0960-8524(21)00566-6
doi: 10.1016/j.biortech.2021.125227
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
125227Informations de copyright
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