Culturing of Selenastrum on diluted composting fluids; conversion of waste to valuable algal biomass in presence of bacteria
| Autor: | Silja Kostia, Marika Tossavainen, Kalle Valkonen, Anne Nykänen, Martin Romantschuk, Anne Ojala |
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| Přispěvatelé: | Environmental Sciences, Anne Ojala / Principal Investigator, Viikki Plant Science Centre (ViPS), Ecosystem processes (INAR Forest Sciences), Department of Forest Sciences, Martin Romantschuk / Principal Investigator |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Environmental Engineering INHIBITION Biomass Photobioreactor Bioengineering Selenastrum 010501 environmental sciences Biology Wastewater 01 natural sciences 7. Clean energy 03 medical and health sciences Photobioreactors Chlorophyta Bioreactor Microalgae Chlorella pyrenoidosa Nutrient reduction WATER Leachate Waste Management and Disposal 1183 Plant biology microbiology virology 1172 Environmental sciences 0105 earth and related environmental sciences ACCUMULATION 219 Environmental biotechnology 2. Zero hunger Waste management Bacteria CHLORELLA-PYRENOIDOSA Renewable Energy Sustainability and the Environment 218 Environmental engineering PHOTOSYNTHESIS General Medicine biology.organism_classification Pulp and paper industry Fatty acid 6. Clean water CULTIVATION MICROALGAE-GROWTH 030104 developmental biology ACID Co-culture BIOFUEL PRODUCTION LIPID PRODUCTIVITY Mixotroph |
| Popis: | Growth and fatty acid production of microalga Selenastrum sp. with associated bacteria was studied in lab-scale experiments in three composting leachate liquids. Nutrient reduction in cultures was measured at different initial substrate strengths. A small, pilot-scale photobioreactor (PBR) was used to verify labscale results. Similar growth conditions supported growth of both Selenastrum and bacteria. CO2 feed enhanced the production of biomass and lipids in PBR (2.4 g L-1 and 17% DW) compared to lab-scale (0.1-1.6 g L-1 and 4.0-6.5% DW) experiments. Also prolonged cultivation time increased lipid content in PBR. At both scales, NH4-N with an initial concentration of ca. 40 mg L-1 was completely removed from the biowaste leachate. In lab-scale, maximal COD reduction was over 2000 mg L-1, indicating mixotrophic growth of Selenastrum. Co-cultures are efficient in composting leachate liquid treatment, and conversion of waste to biomass is a promising approach to improve the bioeconomy of composting plants. (C) 2017 The Authors. Published by Elsevier Ltd. |
| Databáze: | OpenAIRE |
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