|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|4925997||1363171||2018||9 صفحه PDF||ندارد||دانلود کنید|
â¢Twelve species of microalgae encountered in northeastern Brazil were investigated.â¢The fatty acid profiles and biodiesel properties of the microalgae were determined.â¢D101Z showed high lipid productivity and fuel parameters adequate for biodiesel.â¢Only two species evaluated did not fulfill every biodiesel fuel quality standard.
The present work evaluated the growth potential, lipid productivities and the fatty acids methyl esters profiles of 6 chlorophytes and 6 cyanobacteria isolated from the northeast of Brazil, aiming to predict the quality of the biodiesel that could be produced from these microalgae. Among the chlorophytes, Chlorella sp. (D101Z) stood out as having the greatest daily cell division rate (2.42 dâ1). Among the cyanobacteria examined, the species Synechocystis sp. (M3C) and Synechococcus nidulans (D109WC) showed elevated lipid (54.2 and 93.8Â mgÂ Lâ1Â dâ1 respectively) and biomass productivities (0.39 and 0.69Â gÂ Lâ1Â dâ1 respectively). The lipids produced by the chlorophytes were mainly saturated, monounsaturated, and tri-unsaturated esters, while the cyanobacteria produced high levels of saturated esters and fatty acids with different degrees of unsaturation. Statistical analyses indicated D101Z and D109WC as promising species, as they showed high lipid productivity and the biodiesel produced from their lipids demonstrated low cold filter clogging point values, with a low iodine index for D101Z; the rather high iodine index of D109WC, however, disqualified it for biodiesel production purposes. Among the species studied, only the chlorophyte Monoraphidium contortum (D173WC) and the cyanobacteria D109WC did not meetÂ all of the quality specifications.
Journal: Renewable Energy - Volume 115, January 2018, Pages 1144-1152