Biodiesel production from Mucor circinelloides using ethanol and heteropolyacid in one and two-step transesterification
Biodiesel production from Mucor circinelloides using ethanol and heteropolyacid in one and two-step transesterification
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DOI：
10.1016/j.fuel.2017.04.063
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发表时间：
2017-08-15
期刊：
影响因子：
7.4
通讯作者：
de Castro, Heizir F.
中科院分区：
文献类型：
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作者：
Carvalho, Ana Karine F.;da Conceicao, Leyvison Rafael V.;de Castro, Heizir F.
以卷枝毛霉（Mucor circinelloides）生物质为原料，采用乙醇提取油脂，然后通过酯交换反应（两步法）制备生物质油脂，并与不经提取直接从生物质中制备生物质油脂（一步法）进行比较。两种方法都在预先设定的条件下（200 ℃下4小时）使用固体杂多酸催化剂（氧化铝（Al 2 O3）上的12-正磷酸（H3 PMo 12 O 40）载体）。无论是一步还是两步工艺都能够以高产率（97%）将微生物脂质转化为乙酯（FAEE），尽管前者由于消除了导致油损失的油提取步骤而简化了生产工艺。此外，为了使脱水所用的能量最小化，该方法也可用于湿M的酯交换。卷枝藻生物量湿生物质的直接酯交换通过消除干燥和油提取步骤大大简化了FAEE生产过程，使其成为可再生和环境友好的过程。(C)2017爱思唯尔有限公司版权所有
Biodiesel production from Mucor circinelloides biomasswas investigated by conventional method involving the lipid extraction using ethanol followed by transesterification (two-step process) in comparison with directly producing from the whole biomass without extraction (one-step process). Both processes used solid heteropolyacid catalyst (12-molybdophosphoric acid (H3PMo12O40) support on alumina (Al2O3) under conditions previously set up (200 degrees C for 4 h). Either one or two-step process was able to convert the microbial lipids into ethyl esters (FAEE) with high yields (97%), though the former simplifies the production process due to the elimination of an oil extraction step that incurs oil loss. Moreover, to minimize the energy used for dewatering, this method can be also used for transesterification of wet M. circinelloides biomass. Direct transesterification of wet biomass greatly simplifies the process of FAEE production by eliminating the drying and oil extraction steps, making this a renewable and environmental friendly process. (C) 2017 Elsevier Ltd. All rights reserved.