Perspective Design of Algae Photobioreactor for Greenhouses-A Comparative Study

0542572 - ÚVGZ 2022 RIV CH eng J - Journal Article
Sukačová, Kateřina - Losak, P. - Brummer, V. - Máša, V. - Vicha, Daniel - Zavřel, Tomáš
Perspective Design of Algae Photobioreactor for Greenhouses-A Comparative Study.
Energies. Roč. 14, č. 5 (2021), č. článku 1338. E-ISSN 1996-1073
R&D Projects: GA MŠMT(CZ) EF16_026/0008413; GA ČR(CZ) GA18-24397S
Research Infrastructure: CzeCOS III - 90123
Institutional support: RVO:86652079
Keywords : microalgae * biomass * photobioreactors * power consumption * Chlorella * power input * sustainability * lipids * temperature stress * photoinhibition
OECD category: Energy and fuels
Impact factor: 3.252, year: 2021
Method of publishing: Open access
https://www.mdpi.com/1996-1073/14/5/1338

The continued growth and evolving lifestyles of the human population require the urgent development of sustainable production in all its aspects. Microalgae have the potential of the sustainable production of various commodities, however, the energetic requirements of algae cultivation still largely contribute to the overall negative balance of many operation plants. Here, we evaluate energetic efficiency of biomass and lipids production by Chlorella pyrenoidosa in multi-tubular, helical-tubular, and flat-panel airlift pilot scale photobioreactors, placed in an indoor environment of greenhouse laboratory in Central Europe. Our results show that the main energy consumption was related to the maintenance of constant light intensity in the flat-panel photobioreactor and the culture circulation in the helical-tubular photobioreactor. The specific power input ranged between 0.79 W L-1 in the multi-tubular photobioreactor and 6.8 W L-1 in the flat-panel photobioreactor. The construction of multi-tubular photobioreactor allowed for the lowest energy requirements but also predetermined the highest temperature sensitivity and led to a significant reduction of Chlorella productivity in extraordinary warm summers 2018 and 2019. To meet the requirements of sustainable yearlong microalgal production in the context of global change, further development towards hybrid microalgal cultivation systems, combining the advantages of open and closed systems, can be expected.
Permanent Link: http://hdl.handle.net/11104/0319958