Tossavainen , M , Nykänen , A , Valkonen , K S , Ojala , A , Silja , K & Romantschuk , M 2017 , ' Culturing of Selenastrum on diluted composting fluids; conversion of waste to valuable algal biomass in presence of bacteria ' , Bioresource Technology , vol. 238 , pp. 205-213 . https://doi.org/10.1016/j.biortech.2017.04.013
Title: | Culturing of Selenastrum on diluted composting fluids; conversion of waste to valuable algal biomass in presence of bacteria |
Author: | Tossavainen, Marika; Nykänen, Anne; Valkonen, Kalle Santeri; Ojala, Anne; Silja, Kostia; Romantschuk, Martin |
Contributor organization: | Environmental Sciences Anne Ojala / Principal Investigator Viikki Plant Science Centre (ViPS) Ecosystem processes (INAR Forest Sciences) Department of Forest Sciences Martin Romantschuk / Principal Investigator |
Date: | 2017-08 |
Language: | eng |
Number of pages: | 9 |
Belongs to series: | Bioresource Technology |
ISSN: | 0960-8524 |
DOI: | https://doi.org/10.1016/j.biortech.2017.04.013 |
URI: | http://hdl.handle.net/10138/205958 |
Abstract: | 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. |
Subject: |
Microalgae
Wastewater Fatty acid Co-culture Nutrient reduction CHLORELLA-PYRENOIDOSA LIPID PRODUCTIVITY BIOFUEL PRODUCTION MICROALGAE-GROWTH WATER CULTIVATION ACID ACCUMULATION PHOTOSYNTHESIS INHIBITION 218 Environmental engineering 219 Environmental biotechnology 1183 Plant biology, microbiology, virology 1172 Environmental sciences |
Peer reviewed: | Yes |
Rights: | cc_by |
Usage restriction: | openAccess |
Self-archived version: | publishedVersion |
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