Marine biomass as potential energy source. The state of art

The use of biomass to produce biofuels represents an interesting opportunity for the progressive replacement of fossil fuels, without drastic changes for the final users. Some common fuels for terrestrial transports are already a blend of fossil fuels and biofuels. However, the contribution from renewable sources is still marginal. The adoption of biomass is a delicate aspect since some ethical issues should be properly managed. An interesting solution is currently offered by the cultivation of biomass in the seas. The goal of this paper is to assess the current state of art of this sector, depicting the possibilities, critical aspects, and opportunities.