 Optimization of the transesterification reaction of microalgal Monoraphidium spJen-Jeng Chen and Yu-Ru Lee Renewable Energy, 2018, vol. 129, issue PB, 717-723 Abstract: This study optimized biodiesel production by Monoraphidium sp. in terms of fatty acid methyl ester (FAME) yield by varying four variables (volume of methanol, reaction temperature, reaction time, and ultrasound power) using a Box-Behnken design (BBD). Within the experimental range, the volume of methanol was found to be the most important factor, having a positive influence on the FAME yield. The test variables affected the FAME yield, and the optimal condition varied between alkali- and acid-catalyzed transesterification. Both types of transesterification reaction occurred at their optimal catalyst concentrations, 0.5% NaOH and 2% H2SO4, respectively, for both dry and wet microalgal biomass. The FAME yield with the acid-catalyzed reaction was better than that with the alkali-catalyzed reaction. The combined alkali-and-acid-catalyzed transesterification reactions enhanced the FAME yield. The microalgae produced fatty acids, comprising mainly palmitic acid (C16:0), oleic acid (C18:1), linoleic acid (C18:2), and linolenic acid (C18:3), with palmitic acid (C16:0) and linoleic acid (C18:2) being the most abundant. Keywords: Biodiesel; Microalgae; Transesterification (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:129:y:2018:i:pb:p:717-723 DOI: 10.1016/j.renene.2017.06.012 Access Statistics for this article Renewable Energy is currently edited by Soteris A. Kalogirou and Paul Christodoulides More articles in Renewable Energy from Elsevier |
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