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首页> 外文期刊>African Journal of Biotechnology >Biodiesel production from marine microalgae Nannochloropsis gaditana by in situ transesterification process
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Biodiesel production from marine microalgae Nannochloropsis gaditana by in situ transesterification process

机译：通过原位酯交换工艺从海洋微藻Nannochloropsis gaditana生产生物柴油

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Microalgae is one of the best sources of renewable energy production, such as biofuels. The production of biodiesel from microalgae has several advantages, including the high productivity of lipid and the possibility of cultivating them on marginal land. One of the challanges in using microalgae for biodiesel production is the complexities process of lipids extraction by organic solvents followed by transesterification. The aim of this work is to optimize this process by a single extraction and conversion step. The reaction was carried out for different parameters such as; various oil to methanol ratios, concentration of catalyst, temperature and time reaction. The lipid content of Nannochloropsis gaditana microalgae was 0.19 g/g biomass. The best yield of fatty acid methyl ester (65.6%) was obtained at 150 min duration for algae drying, 60% (wt./wt. oil) H2SO4 as catalyst concentration, and 1:8 algae biomass to methanol ratio (w/v). The algal biodiesel samples were analyzed with gas chromatography mass spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FT-IR). N. gaditana microalgae investigated in this study, proved to be suitable as raw material for biodiesel production, due to their high cetane number (69.68). From the FT-IR result and fatty acid profile, it was implied that marine microalgae, N. gaditana in this study can be considered as potential feedstock for biodiesel production to fight the future energy crisis.
机译：微藻是可再生能源生产的最佳来源之一，例如生物燃料。由微藻类生产生物柴油具有多个优势，包括脂质的高生产率以及在边缘土地上种植它们的可能性。使用微藻生产生物柴油的挑战之一是有机溶剂提取脂质，然后进行酯交换的复杂过程。这项工作的目的是通过单个提取和转换步骤来优化此过程。反应针对不同的参数进行，例如：各种油与甲醇的比例，催化剂的浓度，温度和反应时间。 Nannochloropsis gaditana微藻的脂质含量为0.19 g / g生物量。在150分钟的时间内进行藻类干燥，获得60％（wt./wt.%的油）H2SO4作为催化剂浓度，以及1：8的藻类生物质与甲醇比率（w / v）时，脂肪酸甲酯的最佳收率（65.6％）获得了）。藻类生物柴油样品通过气相色谱质谱（GC-MS）和傅里叶变换红外光谱（FT-IR）进行分析。由于这项研究中十六烷值高（69.68），因此在本研究中研究的N. gaditana微藻被证明是适合作为生物柴油生产的原料。从傅立叶变换红外光谱（FT-IR）结果和脂肪酸谱来看，暗示该研究中的海洋微藻加德纳猪笼草（N. gaditana）可被视为生产生物柴油以应对未来能源危机的潜在原料。

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