title: Screening of biomethane production potential from dominant microalgae.
abstract: The use of microalgae for biomethane production has been considerably increasing during the recent years. In this study, four dominant species belonging to the genera Scenedesmus, Chlorella, Dunaliella and Nostoc were selected. The influence of different genera with several morphological, structural and physicochemical characteristics on methane production was assessed in biochemical methane potential (BMP) tests. The ultimate methane yield values were 332 ± 24, 211 ± 2, 63 ± 17 and 28 ± 10 mL CH4/g VSadded for Scenedesmus obliquus, Chlorella sorokiniana, Dunaliella salina and Nostoc sp., respectively. The highest methane production was achieved by microalga species that had no complex cell wall or wall basically composed by proteins and simple sugars such as in S. obliquus, whereas lower methane yields were found for D. salina and Nostoc sp., due to the salinity effects and cell wall composition in terms of complex polysaccharide and glycolipid layers, respectively. Kinetic constant values obtained in the BMP tests ranged between 1.00 ± 0.08 and 0.097 ± 0.005 days(-1) for D. salina and S. obliquus, respectively.
authors.affiliation: a Food Biotechnology Department, Instituto de la Grasa (C.S.I.C.) , Sevilla , Spain.
authors.forename: Fernando G
authors.initials: FG
authors.lastname: Fermoso
authors.affiliation: a Food Biotechnology Department, Instituto de la Grasa (C.S.I.C.) , Sevilla , Spain.|b Scientific and Technological Bioresource Nucleus, Universidad de La Frontera , Temuco , Chile.
authors.forename: Carolina
authors.initials: C
authors.lastname: Beltran
authors.affiliation: c Department of Physical, Chemical, and Natural Systems , Universidad Pablo de Olavide , Sevilla , Spain.
authors.forename: Antonia
authors.initials: A
authors.lastname: Jimenez
authors.affiliation: a Food Biotechnology Department, Instituto de la Grasa (C.S.I.C.) , Sevilla , Spain.|c Department of Physical, Chemical, and Natural Systems , Universidad Pablo de Olavide , Sevilla , Spain.
authors.forename: María José
authors.initials: MJ
authors.lastname: Fernández
authors.affiliation: a Food Biotechnology Department, Instituto de la Grasa (C.S.I.C.) , Sevilla , Spain.
authors.forename: Bárbara
authors.initials: B
authors.lastname: Rincón
authors.affiliation: a Food Biotechnology Department, Instituto de la Grasa (C.S.I.C.) , Sevilla , Spain.
authors.forename: Rafael
authors.initials: R
authors.lastname: Borja
authors.affiliation: b Scientific and Technological Bioresource Nucleus, Universidad de La Frontera , Temuco , Chile.|d Department of Chemical Engineering , Universidad de La Frontera , Temuco , Chile.
authors.forename: David
authors.initials: D
authors.lastname: Jeison
mesh_terms: D056804:Biofuels; D002708:Chlorella / Q000378:metabolism*; D000460:Chlorophyta / Q000378:metabolism*; D008697:Methane / Q000378:metabolism*; D058086:Microalgae / Q000378:metabolism*; D046937:Nostoc / Q000378:metabolism*; D044444:Scenedesmus / Q000378:metabolism*
chemical_list: D056804:Biofuels; D008697:Methane
keywords: Anaerobic digestion; biomethane; microalga; specific strains