The growth characteristics and biodiesel production of ten algae strains cultivated in anaerobically digested effluent from kitchen waste
2017
Yu, Ze | Song, Mingming | Pei, Haiyan | Han, Fei | Jiang, Liqun | Hou, Qingjie
The growth characteristics and biodiesel production of ten algae strains cultivated in diluted anaerobically digested effluent kitchen waste (KWADE) were studied in this paper. Four microalgae species could tolerate the high NH3-N concentration in KWADE. Based on the results of PROMETHEE-GAIA, all strains cultivated with KWADE attained better biodiesel properties compared to cultivation in BG11. The most suitable strain was Scenedesmus SDEC-8, followed by Chlorella SDEC-18 and Scenedesmus SDEC-13. The best strain, Scenedesmus SDEC-8, achieved an extraordinary lipid content of 33.85% and lipid productivity of 20.27mgL−1d−1, a desirable fatty acid methyl ester profile of 94.03% and satisfactory biodiesel properties in cetane number (59.39), iodine value (51.58gI2/100g fat) and lower cloud point (13.01°C) too. In addition, SDEC-8 also exhibited the highest nitrogen average yield coefficient of 53.1mgg−1, and had an average yield coefficient of 1.8mgg−1 for phosphorous.
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