Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7077447 | Bioresource Technology | 2014 | 20 Pages |
Abstract
Growth and lipid production performance of Scenedesmus sp. under different culture modes were investigated. Under heterotrophic aerobic mode, algal biomass concentration and total lipid content reached 3.42 g Lâ1 and 43.0 wt.%, which were much higher than those in autotrophic aerobic mode (0.55 g Lâ1/20.2 wt.%). The applied light exposure of 7.0 W mâ2 was beneficial to biomass and lipid accumulation. Mixotrophic aerobic mode produced the highest biomass concentration of 3.84 g Lâ1. The biomass was rich in lipids (51.3 wt.%) and low in proteins (17.9 wt.%) and carbohydrates (10.3 wt.%). However, lower algal biomass concentration (2.93 g Lâ1) and total lipid content (36.1 wt.%) were obtained in mixotrophic anaerobic mode. Mixotrophic aerobic mode gave the maximum heat value conversion efficiency of 45.7%. These results indicate that mixotrophic aerobic cultivation was a promising culture mode for lipid production by Scenedesmus sp.
Keywords
Related Topics
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Chemical Engineering
Process Chemistry and Technology
Authors
Hong-Yu Ren, Bing-Feng Liu, Fanying Kong, Lei Zhao, Guo-Jun Xie, Nan-Qi Ren,