Screening of biomethane production potential from dominant microalgae

Fernando G. Fermoso, Carolina Beltran, Antonia Jimenez, María José Fernández, Bárbara Rincón, Rafael Borja, DAVID ALEJANDRO JEISON NUÑEZ

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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 CH 4 /g VS added 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.

Original languageEnglish
Pages (from-to)1062-1067
Number of pages6
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume51
Issue number12
DOIs
StatePublished - 14 Oct 2016

Keywords

  • Anaerobic digestion
  • biomethane
  • microalga
  • specific strains

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