Cultivo en efluentes urbanos del alga Scenedesmus quadricauda (Sphaeropleales: Scenedesmaceae) y su potencial para biodiesel: perfil de ésteres metílicos de ácidos grasos

Cultivo en efluentes urbanos del alga Scenedesmus quadricauda (Sphaeropleales: Scenedesmaceae) y su potencial para biodiesel: perfil de ésteres metílicos de ácidos grasos

Authors

  • Ruth Salomon Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina
  • Marcela Crevero Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina
  • Enrique Rost Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina
  • Marisa Carstens Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina
  • Ariel Parra Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina
  • Isabel Albarracín CONICET, Rawson, Chubut Argentina

DOI:

https://doi.org/10.22458/urj.v6i2.626

Keywords:

biodiesel, microalgae, Scenedesmus quadricauda, urban effluents, fatty acid methyl esters.

Abstract

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.

Author Biographies

Ruth Salomon, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Laboratorio de Microalgas, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Marcela Crevero, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Laboratorio de Microalgas, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Enrique Rost, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina

Dpto. de Ing. Química, Facultad de Ingeniería, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina

Marisa Carstens, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina

Dpto. de Ing. Química, Facultad de Ingeniería, Universidad Nacional de la Patagonia San Juan Bosco, Comodoro Rivadavia, Chubut. Argentina

Ariel Parra, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Laboratorio de Microalgas, Facultad de Ciencias Naturales, Universidad Nacional de la Patagonia San Juan Bosco, Trelew, Chubut. Argentina

Isabel Albarracín, CONICET, Rawson, Chubut Argentina

Estación de Fotobiología, CONICET, Rawson, Chubut Argentina

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Published

2014-09-03

How to Cite

Salomon, R., Crevero, M., Rost, E., Carstens, M., Parra, A., & Albarracín, I. (2014). Cultivo en efluentes urbanos del alga Scenedesmus quadricauda (Sphaeropleales: Scenedesmaceae) y su potencial para biodiesel: perfil de ésteres metílicos de ácidos grasos. UNED Research Journal, 6(2), 213–221. https://doi.org/10.22458/urj.v6i2.626

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