Recycling of Aqueous Phase from Hydrothermal Liquefaction and Municipal Wastewater by Microalgae

The search for alternatives to hydrocarbon fuels remains an actual task. Microalgae (MA) as raw material for the production of biofuel remain an urgent object of research among other types of biomass, and the cultivation of MA is constantly growing. One of the promising technologies for biofuel prod...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2020-06, Vol.877 (1), p.12045
Main Authors: Chernova, N, Kiseleva, S, Vlaskin, M, Grigorenko, A
Format: Article
Language:English
Subjects:
Algae
Alternative fuels
Biodiesel fuels
Biofuels
Biomass
BIOS
Carbohydrates
Chlorella
Cultivation
Energy value
Hydrocarbon fuels
Lipids
Liquefaction
Nutrients
Wastewater
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Summary:The search for alternatives to hydrocarbon fuels remains an actual task. Microalgae (MA) as raw material for the production of biofuel remain an urgent object of research among other types of biomass, and the cultivation of MA is constantly growing. One of the promising technologies for biofuel production from MA is hydrothermal liquefaction (HTL) that allows processing wet biomass and turning all carbon-containing components (lipids, carbohydrates, proteins) into fuel. However, the hydrothermal liquefaction process leads to the formation of a significant amount of the aqueous phase, which is a by-product with low energy value and also needs to be processed. It is important to consider the possibility of using the aqueous phase after HTL, as well as municipal wastewater, for the cultivation of MA in combination with the production of biofuels. The MA strains capable to grow in a dilute aqueous phase after HTL (Galdieria sulphuraria rsemsu G-1, Chlorella vulgaris rsemsu Chv-20/11-Ps, Arthrospira platensis rsemsu Bios) and in wastewater (Arthrospira platensis rsemsu Bios, Chlorella ellipsoidea rsemsu Chl-el) were experimentally selected from collection of RSE Laboratory at LMSU. The article is devoted to the experimental study of the degree of nutrients utilization by MA from wastewater and an HTL-aqueous phase.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/877/1/012045