Biopolymer production from biomass produced by Nordic microalgae grown in wastewater
| Autor: | Sanjeet Mehariya, Martin Plöhn, Piotr Jablonski, Stefan Stagge, Leif J. Jönsson, Christiane Funk |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: |
Environmental Engineering
Renewable Energy Sustainability and the Environment Biochemistry and Molecular Biology Bioengineering General Medicine Wastewater Bioeconomy Pre-treatment Microbiology Bioplastic Mikrobiologi Nordic microalgae Polyhydroxybutyrate Waste Management and Disposal Biokemi och molekylärbiologi |
| Popis: | Biomass from four different Nordic microalgal species, grown in BG-11 medium or synthetic wastewater (SWW), was explored as inexpensive carbohydrate-rich feedstock for polyhydroxybutyrate (PHB) production via microbial fermentation. Thermochemical pre-treatment (acid treatment followed by autoclavation) with 2% hydrochloric acid or 1% sulphuric acid (v/v) was used to maximize sugar yield prior to fermentation. Pre-treatment resulted in ∼5-fold higher sugar yield compared to the control. The sugar-rich hydrolysate was used as carbon source for the PHB-producing extremophilic bacterium Halomonas halophila. Maximal PHB production was achieved with hydrolysate of Chlorococcum sp. (MC-1) grown on BG-11 medium (0.27 ± 0.05 g PHB/ g DW), followed by hydrolysate derived from Desmodesmus sp. (RUC-2) grown on SWW (0.24 ± 0.05 g PHB/ g DW). Nordic microalgal biomass grown on wastewater therefore can be used as cheap feedstock for sustainable bioplastic production. This research highlights the potential of Nordic microalgae to develop a biobased economy. |
| Databáze: | OpenAIRE |
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