4.7 Article

What is the gross energy yield of third generation gaseous biofuel sourced from seaweed?

Journal

ENERGY
Volume 81, Issue -, Pages 352-360

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2014.12.048

Keywords

Anaerobic digestion; Biogas; Macro-algae; 3rd generation biofuels

Funding

  1. Science Foundation Ireland (SFI) [11/RFP.1/ENM/3213]
  2. SFI centre MaREI [12/RC/2302]
  3. Teagasc through the Walsh Fellowship

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Seaweed may be a source of third generation gaseous biofuel, in the form of biomethane. The scientific literature is sparse on the relative suitability of different varieties of seaweed to produce biomethane. This paper assesses the BMP (biochemical methane potential), ultimate analysis and theoretical yields of ten species of seaweed which may be found in commercial quantities around the coastline of Ireland. Saccharina latissima reported the highest BMP yield (ca. 342 L CH4 kg VS-1). S. latissima if farmed, may produce 10,250 m(3) CH4 ha(-1) yr(-1) (365 GJ ha(-1) yr(-1)) which is in excess of all land based liquid biofuel systems. (C) 2014 Elsevier Ltd. All rights reserved.

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