Cultivo en efluentes urbanos del alga Scenedesmus quadricauda (Sphaeropleales: Scenedesmaceae) y su potencial para biodiesel: perfil de ésteres metílicos de ácidos grasos
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| Autores: | , , , , , |
|---|---|
| 格式: | artículo original |
| 狀態: | Versión publicada |
| Fecha de Publicación: | 2014 |
| 實物特徵: | Microalgae stand as biodiesel feedstock for high productivity and good quality of lipids. This paper presents the fatty acid methyl ester profile of Scenedesmus quadricauda. The culture was grown in Trelew city sewage, Patagonia, Argentina, in 20L at 23±1ºC, 12:12 photoperiod, fluorescent lighting tubes at 33μE m-2s-1 and agitation by air bubbling. Percentage of fatty acid methyl esters was 7,89%, it was determined by Lepage method. The profile was obtained by gas chromatography. Methyl linolenate (C18: 3) and polyunsaturated (≥4 double bonds) ester fractions were 15,06% and 0,83% respectively. The unsaturation index (0,84) was estimated and some biodiesel parameters were calculated through it: kinematic viscosity (4,68mm s -2), iodine value (75,15), cetane number (57,28), cloud point (8,78°C), specific gravity (0,88) and higher heating value (40,01MJ/kg). Linolenic acid ester fraction is above the limit value of EN 14214:2003 (<12%). However, one can modify unsaturation in this strain by varying the temperature. It is also possible to increase the lipid proportion by maintaining the culture at low nitrogen concentration by venting NH3 to increase pH during photosynthesis. |
| País: | Portal de Revistas UNED |
| 機構: | Universidad Estatal a Distancia |
| Repositorio: | Portal de Revistas UNED |
| 語言: | Español |
| OAI Identifier: | oai:revistas.investiga.uned.ac.cr:article/626 |
| 在線閱讀: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/626 |
| Palabra clave: | biodiesel microalgae Scenedesmus quadricauda urban effluents fatty acid methyl esters. microalgas efluentes urbanos ésteres metílicos de ácidos grasos. |