Comparative evaluation of wet and dry processes for recovering hydrocarbon from Botryococcus Braunii

Kiyotaka Saga, Fumio Hasegawa, Syoko Miyagi, Sueko Atobe, Shigeru Okada, Kenji Imou, Noriko Osaka and Tetsu Yamagishi

Applied Energy, 2015, vol. 141, issue C, 90-95

Abstract: This study aimed to document the material balance and evaluate the energy profit ratios (EPRs) of two processes for recovering hydrocarbon from the green microalgae Botryococcus braunii, which produces hydrocarbon intercellularly, releases it extracellularly, and accumulates it in the extracellular matrix in colony-form. The first is a wet process that elutes an extraction inhibitor through heat, eliminates it through solid–liquid separation, and extracts a hydrocarbon using hexane. The second is a dry process that extracts hydrocarbon by hexane after drying. The EPR of the wet process (3.5) was approximately twice that of the dry process (1.8). Therefore, hydrocarbon can be efficiently recovered from B. braunii without drying.

Keywords: Botryococcus braunii; Biofuel; Thermal pretreatment; Concentrated slurry; Solvent extraction (search for similar items in EconPapers)
Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:141:y:2015:i:c:p:90-95

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DOI: 10.1016/j.apenergy.2014.12.018

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