In situ ethyl ester production from wet algal biomass under microwave-mediated supercritical ethanol conditions
In situ ethyl ester production from wet algal biomass under microwave-mediated supercritical ethanol conditions
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DOI：
10.1016/j.biortech.2013.04.045
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发表时间：
2013-07-01
影响因子：
11.4
通讯作者：
Deng, Shuguang
中科院分区：
文献类型：
--
作者：
Patil, Prafulla D.;Reddy, Harvind;Deng, Shuguang
在微波介导的超临界乙醇条件下，采用原位酯交换法将富含油脂的湿藻（Nannochloropsis sauna）转化为脂肪酸乙酯（FAEE），同时保留藻中的营养成分和其他有价值的成分。这种一步法可以同时有效地从湿藻中提取脂质并将其转化为粗生物柴油。实验运行的设计，以优化工艺参数，并评估其对藻类生物柴油产量的影响。利用FTIR、SEM-EDS、TLC、GC-MS和TEM等分析手段对藻类生物质进行表征和藻类生物柴油分析。在氮气和氧气环境下的热重分析（TGA）也进行了检查的热稳定性和氧化稳定性的乙酯从湿藻产生。这种使用绿色溶剂和无催化剂方法的简单原位酯交换过程可能是藻类生物柴油生产的潜在有效途径。(C)2013爱思唯尔有限公司保留所有权利。
An in situ transesterification approach was demonstrated for converting lipid-rich wet algae (Nannochloropsis sauna) into fatty acid ethyl esters (FAEE) under microwave-mediated supercritical ethanol conditions, while preserving the nutrients and other valuable components in the algae. This single-step process can simultaneously and effectively extract the lipids from wet algae and transesterify them into crude biodiesel. Experimental runs were designed to optimize the process parameters and to evaluate their effects on algal biodiesel yield. The algal biomass characterization and algal biodiesel analysis were carried out by using various analytical instruments such as FTIR, SEM-EDS, TLC, GC-MS and transmission electron microscopy (TEM). The thermogravimetric analysis (TGA) under nitrogen and oxygen environments was also performed to examine the thermal and oxidative stability of ethyl esters produced from wet algae. This simple in situ transesterification process using a green solvent and catalyst-free approach can be a potentially efficient route for algal biodiesel production. (C) 2013 Elsevier Ltd. All rights reserved.