期刊
BIORESOURCE TECHNOLOGY
卷 249, 期 -, 页码 992-999出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.10.102
关键词
Microalgal biomass; Lipid-free biomass; Biodiesel; Waste glycerol; Nutrients recycling
资金
- National Science-technology Support Plan Projects of China [2015BAD21B00]
- National Natural Science Funds of China [51676091]
- School of Energy & Power Engineering, Jiangsu University
- Arbeitsgemeinschaft industrieller Forschungsvereinigungen Otto von Guericke e.V. [KF2353701SB9]
In the present work, a novel approach of using growth medium with different substitutions of lipid-free algal hydrolysate (LFAH, 0, 5, 10 and 15%) and/or waste glycerol (WG, 0, 5, 10 and 20 g L-1) for enhanced biodiesel production from Scenedesmus obliquus was studied. Combination of different concentrations of WG with 15% LFAH showed the maximum significant biomass productivity, which represented 27.4, 30.5 and 28.9% over the control at combined 5, 10 and 20 g L-1 WG, respectively. The combinations of different LFAH with 20 g L-1 WG showed the maximum significant lipid accumulation, where lipid productivity showed its maximum significant value of 59.66 mg L-1 d(-1) using LFAH15-WG10. In addition, LFAH15-WG10 significantly enhanced total FAMEs yield by 21.2% over the control. Moreover, it reduced polyunsaturated fatty acids (PUFAs) ratio from 52.1% to 47.8% of total FAMEs, and increased monounsaturated fatty acids (MUFAs) ratio from 26.6% to 31.3% of total FAMEs.
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