Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4996466 | Bioresource Technology | 2017 | 36 Pages |
Abstract
In this study, a carbohydrate-rich microalga Neochloris aquatica CL-M1 was adapted to grow in swine wastewater. The effects of cultivation conditions (i.e., temperature, light intensity or N/P ratio) on COD/nutrients removal and carbohydrate-rich biomass production were investigated. The results indicate that the highest COD removal (81.7%) and NH3-N removal (96.2%) was achieved at 150 µmol mâ2 sâ1 light intensity, 25 °C and N/P ratio = 1.5/1. The highest biomass concentration and carbohydrate content was 6.10 g Lâ1 and 50.46%, respectively, when N/P ratio = 5/1. The resulting carbohydrate-rich microalgal biomass was pretreated and used as a feedstock for butanol fermentation. With the initial sugar concentration of 48.7 g Lâ1 glucose and 3.4 g Lâ1 xylose in the pretreated biomass, the butanol concentration, yield, and productivity were 12.0 g Lâ1, 0.60 mol molâ1 sugar, and 0.89 g Lâ1 hâ1, respectively, indicating the high potential of using Neochloris aquatica CL-M1 for butanol fermentation.
Related Topics
Physical Sciences and Engineering
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Authors
Yue Wang, Shih-Hsin Ho, Chieh-Lun Cheng, Dillirani Nagarajan, Wan-Qian Guo, Chiayi Lin, Shuangfei Li, Nanqi Ren, Jo-Shu Chang,