Life cycle assessment of hetero- and phototrophic as well as combined cultivations of Galdieria sulphuraria
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in: Bioresource Technology, Jahrgang 335, 125227, 01.09.2021.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Life cycle assessment of hetero- and phototrophic as well as combined cultivations of Galdieria sulphuraria
AU - Thielemann, Anne Karolin
AU - Smetana, Sergiy
AU - Pleissner, Daniel
N1 - The authors acknowledge the German Federal Ministry of Education and Research (BMBF) for providing funding within the Era-Net Cofund “FACCE SURPLUS” Program (Project UpWaste 031B0934B).
PY - 2021/9/1
Y1 - 2021/9/1
N2 - 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.
AB - 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.
KW - Bioeconomy
KW - Biomass
KW - Carbon dioxide exchange
KW - Environmental impact
KW - Oxygen exchange
KW - Biology
UR - http://www.scopus.com/inward/record.url?scp=85105861480&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2021.125227
DO - 10.1016/j.biortech.2021.125227
M3 - Journal articles
C2 - 33992913
AN - SCOPUS:85105861480
VL - 335
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
M1 - 125227
ER -