Catalytic hydrothermal processing of microalgae: Decomposition and upgrading of lipids
Catalytic hydrothermal processing of microalgae: Decomposition and upgrading of lipids
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DOI：
10.1016/j.biortech.2010.12.113
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发表时间：
2011-04-01
影响因子：
11.4
通讯作者：
Ross, A. B.
中科院分区：
文献类型：
--
作者：
Biller, P.;Riley, R.;Ross, A. B.
微藻等高脂原料的水热处理是一种可替代的提油方法，对高水分生物质具有明显的效益。从陆地油籽中提取的一系列微藻和脂肪在350摄氏度、150-200巴的水中进行处理。在某些多相催化剂的存在下，水热液化可以将甘油三酯转化为脂肪酸和烷烃。本研究比较了溶剂萃取法和水热法提取的油脂和游离脂肪酸的组成。最初的分解产物包括游离脂肪酸和甘油，并研究了使用多相催化剂进行脱氧的可能性。结果表明，使用多相催化剂后，微藻液化的生物粗品产量略有增加，但较高的热值(HHV)和脱氧水平提高了10%。(C)2011爱思唯尔有限公司。保留所有权利。
Hydrothermal processing of high lipid feedstock such as microalgae is an alternative method of oil extraction which has obvious benefits for high moisture containing biomass. A range of microalgae and lipids extracted from terrestrial oil seed have been processed at 350 degrees C. at pressures of 150-200 bar in water. Hydrothermal liquefaction is shown to convert the triglycerides to fatty acids and alkanes in the presence of certain heterogeneous catalysts. This investigation has compared the composition of lipids and free fatty acids from solvent extraction to those from hydrothermal processing. The initial decomposition products include free fatty acids and glycerol, and the potential for de-oxygenation using heterogeneous catalysts has been investigated. The results indicate that the bio-crude yields from the liquefaction of microalgae were increased slightly with the use of heterogeneous catalysts but the higher heating value (HHV) and the level of de-oxygenation increased, by up to 10%. (C) 2011 Elsevier Ltd. All rights reserved.