One of the major criticisms of biofuels is that they compete with food in terms of land use, driving prices up. In order to solve the problem, how about looking to the ocean as a source of biofuel?
Scientists from different departments at Tel Aviv University have discovered that marine macroalgae,
Kelp has a high rate of growth and its decay is quite efficient in yielding methane, as well as sugars that can be converted to ethanol. It has been proposed that large open-ocean kelp farms could serve as a source of renewable energy. Unlike some biofuels such as corn ethanol, kelp energy avoids “food vs