评估通过水热液化生产生物燃料的微藻生物炼制途径。
Assessing microalgae biorefinery routes for the production of biofuels via hydrothermal liquefaction.
机构信息
Department of Biosystems Engineering, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium.
Centro Interdipartimentale di Ricerca Industriale (CIRI), University of Bologna, via S. Alberto 163, 48123 Ravenna, Italy.
出版信息
Bioresour Technol. 2014 Dec;174:256-65. doi: 10.1016/j.biortech.2014.10.031. Epub 2014 Oct 14.
The interest in third generation biofuels from microalgae has been rising during the past years. Meanwhile, it seems not economically feasible to grow algae just for biofuels. Co-products with a higher value should be produced by extracting a particular algae fraction to improve the economics of an algae biorefinery. The present study aims at analyzing the influence of two main microalgae components (lipids and proteins) on the composition and quantity of biocrude oil obtained via hydrothermal liquefaction of two strains (Nannochloropsis gaditana and Scenedesmus almeriensis). The algae were liquefied as raw biomass, after extracting lipids and after extracting proteins in microautoclave experiments at different temperatures (300-375°C) for 5 and 15min. The results indicate that extracting the proteins from the microalgae prior to HTL may be interesting to improve the economics of the process while at the same time reducing the nitrogen content of the biocrude oil.
近年来，人们对来自微藻的第三代生物燃料的兴趣日益浓厚。然而，仅仅为了生产生物燃料而种植藻类在经济上似乎并不可行。通过提取特定的藻类部分来生产具有更高附加值的副产物，可以改善藻类生物精炼厂的经济性。本研究旨在分析两种主要微藻成分（脂质和蛋白质）对两种藻（Nannochloropsis gaditana 和 Scenedesmus almeriensis）水热液化获得的生物原油组成和数量的影响。在微高压釜实验中，将藻类作为原始生物质、提取脂质后的藻类以及提取蛋白质后的藻类在不同温度（300-375°C）下液化 5 和 15 分钟。结果表明，在 HTL 之前从微藻中提取蛋白质可能有助于提高工艺的经济性，同时降低生物原油中的氮含量。
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