Journal article
Influence of Exogenous CO2 on Biomass and Lipid Accumulation of Microalgae Auxenochlorella protothecoides Cultivated in Concentrated Municipal Wastewater
Applied biochemistry and biotechnology, Vol.166(7), pp.1661-1673
04/2012
Handle:
https://hdl.handle.net/2376/117603
PMID: 22367636
Abstract
The effects of exogenous CO2 on the growth and lipid accumulation of a local screened facultative heterotrophic microalgae strain Auxenochlorella protothecoides (UMN280) as well as nutrient removal from concentrated municipal wastewater stream (centrate) were examined in this study. A 12-day batch experiment was conducted with CO2 aeration at three levels, namely, 0%, 1%, and 5% (v/v) CO2 mixed with air, under light intensity of 60 μmol/(m2 @@s). A two-stage growth pattern was observed. The first stage (first–fifth day) was dominated by heterotrophic growth in which organic carbon was the main carbon source. The second stage (6th–12th day) was dominated by autotrophic growth in which exogenous CO2 had a positive effect on algal biomass accumulation. The addition of 5% CO2 was better than that of 1% CO2 on the biomass and lipid production. The uptakes of nutrients were similar between injection and no injection of CO2, except on phosphorus removal which was affected by the acidification of CO2.
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Details
- Title
- Influence of Exogenous CO2 on Biomass and Lipid Accumulation of Microalgae Auxenochlorella protothecoides Cultivated in Concentrated Municipal Wastewater
- Creators
- Bing Hu - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAMin Min - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAWenguang Zhou - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAYecong Li - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAMichael Mohr - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAYanling Cheng - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USAHanwu Lei - Biological Systems Engineering Washington State University Richland WA 99354 USAYuhuan Liu - Biomass Energy Center and State Key Laboratory of Food Science Nanchang University Jiangxi 330047 ChinaXiangyang Lin - College of Bioscience and Biotechnology Fuzhou University Fujian 350108 ChinaPaul Chen - Center for Biorefining and Department of Bioproducts and Biosystems Engineering University of Minnesota 1390 Eckles Ave St. Paul MN 55108 USARoger Ruan - Biomass Energy Center and State Key Laboratory of Food Science Nanchang University Jiangxi 330047 China
- Publication Details
- Applied biochemistry and biotechnology, Vol.166(7), pp.1661-1673
- Academic Unit
- Biological Systems Engineering, Department of; Plant Pathology, Department of; Chemical Engineering and Bioengineering, School of
- Publisher
- Springer-Verlag; New York
- Identifiers
- 99900548271701842
- Language
- English
- Resource Type
- Journal article