A new trend is taking over the marine shipping industry. With the aim of bringing down vessels Carbon emission, private companies and organizations are working on more efficient fuels and propulsion systems. Shipping companies have turned to the use of biofuels in the short and medium terms, using these as a gap filler until completely renewable sources will be economically available.
Biofuels have undergone several big changes over the years. Whilst the first generation of eco-friendlier fuels like bioethanol and biodiesel derived from agricultural crops were promising, they used the same raw materials as in the food industry, like corn and vegetable oils.
The second generation of biodiesel, which is where we are right now, uses lignocellulosic feedstocks derived from byproducts of forests, agricultural, used oil, urban wastes and food industries. The materials used in the second generation are all treated and disposed of as wastes.
Third generation, The goal is to integrate the second generation biofuels and possibly completely take over fossil fuels.
In the future, third generation biofuels will be derived from specifically engineered farming, produced in desertic or even sea environments. Promising candidates are algae