Biodiesel production from Spirulina microalgae feedstock using direct transesterification near supercritical methanol condition

Bioresource Technology
Hamed Mohamadzadeh ShiraziCyrus Ghotbi

Abstract

Microalgae as a candidate for production of biodiesel, possesses a hard cell wall that prevents intracellular lipids leaving out from the cells. Direct or in situ supercritical transesterification has the potential for destruction of microalgae hard cell wall and conversion of extracted lipids to biodiesel that consequently reduces the total energy consumption. Response surface methodology combined with central composite design was applied to investigate process parameters including: Temperature, Time, Methanol-to-dry algae, Hexane-to-dry algae, and Moisture content. Thirty-two experiments were designed and performed in a batch reactor, and biodiesel efficiency between 0.44% and 99.32% was obtained. According to fatty acid methyl ester yields, a quadratic experimental model was adjusted and the significance of parameters was evaluated using analysis of variance (ANOVA). Effects of single and interaction parameters were also interpreted. In addition, the effect of supercritical process on the ultrastructure of microalgae cell wall using scanning electron spectrometry (SEM) was surveyed.

Citations

Mar 8, 2018·Critical Reviews in Biotechnology·Jiaxin ChenWenyi Dong
Jun 13, 2019·Critical Reviews in Biotechnology·Nazia Hossain, Teuku Meurah Indra Mahlia
Sep 15, 2019·Applied Biochemistry and Biotechnology·Jessica Hartwig DuarteJorge Alberto Vieira Costa
May 30, 2019·Biotechnology for Biofuels·Nazia HossainR Saidur
Aug 29, 2021·Environmental Science and Pollution Research International·Arun Prasad Arunachalam SivagurulingamSivakumar Pandian

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