Abstract

CHAVEZ-SANDOVAL, Blanca Estela et al. Obtaining Biodiesel by Direct Transesterification of Botryococcus braunii and Coccomyxa subellipsoidea. J. Mex. Chem. Soc [online]. 2021, vol.65, n.3, pp.318-330.  Epub Feb 14, 2022. ISSN 1870-249X.  https://doi.org/10.29356/jmcs.v65i3.1430.

Biofuels have been obtained from vegetable oils, animal fats and recently from microorganisms such as algae, bacteria or yeasts that present a significant content of triacylglycerols through a transesterification reaction. Technical problems with biodiesel or agrodiesel (Term recently used, in this work we will use biodiesel), include oxidative stability, cold flow, and increased NOx emissions. The solution to these problems involves the use of additives on the one hand or modifying the fatty acid composition of the microorganisms alternatively, either through changes in the cultivation temperature, addition of nanomaterials, or through genetic modification, to obtain high-quality biofuels. In this work, two species of microalgae with high fatty acid content were obtained, Botryococcus braunii originating from Cuzco, Peru and Coccomyxa subellipsoidea C-169, from Marble Point, Antarctica, both were cultivated under optimal conditions and later direct transesterification was performed to obtaining biodiesel. The main objective was to develop an economical and viable process that allows it to compete with fossil fuels, based on obtaining biomass and the transesterification method. Here, direct transesterification was effective and allows to significantly reduce the problems associated with the increase in costs of obtaining biodiesel, because reduces critical steps, also the biodiesel thus obtained represents an advance in the development of high-quality biofuels, large-scale and inexpensive.

Keywords : Biodiesel; direct transesterification; microalgae; B. braunii; C. subellipsoidea C-169.

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