Simple Extraction Method of Green Crude from Natural Blue-Green Microalgae by Dimethyl Ether: Extraction Efficiency on Several Species Compared to the Bligh-Dyer’s Method

Hideki Kanda
Energy Engineering Research Laboratory, Central Research Institute of Electric Power Industry, Japan

Peng Li
Energy Engineering Research Laboratory, Central Research Institute of Electric Power Industry, Japan

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp11057530

Ingår i: World Renewable Energy Congress - Sweden; 8-13 May; 2011; Linköping; Sweden

Linköping Electronic Conference Proceedings 57:71, s. 530-536

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Publicerad: 2011-11-03

ISBN: 978-91-7393-070-3

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


We proposed a simple; energy-efficient and environmental friendly method to extract green crude oil from microalgae by using dimethyl ether (DME). In this study; this method was tested on several species of natural blue-green microalgae. Consequently; the green crude was successfully directly extracted from highmoisture microalgae (78.2–93.4 % water content) with an extraction rate ranging from 9.9 to 40.1 % of the dry weight of the microalgae. The extraction yield of total green crude on these species by liquefied DME was compared to the widely-used Bligh-Dyer’s method. The DME method almost achieved an extraction capacity approximately equivalent to the Bligh-Dyer’s method. Furthermore; the dewatering properties of the proposed method on several species of wet microalgae; and the extraction efficiency were also investigated.


Biofuel; Blue-green microalgae; Extraction; Dimethyl ether


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