Optimization of microalgae oil extraction under ultrasound and microwave irradiation
Optimization of microalgae oil extraction under ultrasound and microwave irradiation
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DOI：
10.1002/jctb.4272
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发表时间：
2014-11-01
影响因子：
3.4
通讯作者：
Cravotto, Giancarlo
中科院分区：
文献类型：
--
作者：
Bermudez Menendez, Jose Miguel;Arenillas, Ana;Cravotto, Giancarlo
背景技术背景：微藻是世界上最有前途的生物燃料来源之一;然而，转化过程受到主要与脱水和提取有关的技术和经济问题的阻碍。通过非常规技术如超声波（US）和微波（MW）可以显著提高该过程的效率。扩大规模的可行性与反应器效率、能源消耗、环境影响和总成本密切相关。本文对海洋富油微拟球藻中油脂的提取工艺进行了优化研究。常规的提取程序与氯仿/甲醇混合物和快速US和MW辅助提取与甲醇得到可比的脂肪酸（FA）的w/w%从干微藻。最高的提取率和最低的能量消耗被发现发生在MW照射下，特别是在高温下，在pressure.CONCLUSION：这项研究突出了美国和MW辅助从微藻中提取脂质的优点，无论是在效率和运营成本方面。(C)2013年化学工业协会
BACKGROUND: Microalgae are one of the most promising biofuel sources that the world has to offer; nevertheless the conversion process is hampered by technical and economic problems that are mainly related to de-watering and extraction. The efficiency of the process can be dramatically improved by means of non-conventional techniques such as ultrasound (US) and microwaves (MW). Scaling-up feasibility is strictly linked to reactor efficiency, energy consumption, environmental impact and overall cost. In the present work, the optimization of lipid extraction from Nannochloropsis gaditana microalga is investigated.RESULTS: A series of selected solvent mixtures and procedures have been tested and compared. Conventional extraction procedures with chloroform/methanol mixtures and fast US- and MW-assisted extractions with methanol gave comparable fatty acid (FA) w/w% from dried microalgae. The highest extraction yield and lowest energy consumption was found to occur under MW irradiation, especially at high temperatures and under pressure.CONCLUSION: This study highlights the advantages of US- and MW-assisted lipid extraction from microalgae, both in terms of efficiency and operational costs. (C) 2013 Society of Chemical Industry