Renewable fuels refer to energy sources that can be renewed. Examples of renewable fuels include hydrogen fuel and biological fuels. They are in contrast to non-renewable fuels, which are petroleum, natural gas, LPG, and other fossil fuels. They can also include nuclear power. There are many current initiatives to develop renewable fuels, and the technologies required to produce them.
Cellulosic Biofuels
Cellulosic Biofuels are renewable and sustainable energy sources made from biomass. This source of energy is a great resource that can help the US reach energy independence. Since 1995, the National Renewable Energy Laboratory (NREL) has been researching cellulosic ethanol. The National Bioenergy Center, which is a drop-in replacement for gasoline, is managed by this company.
Biodiesel
Biodiesel comes from renewable resources and has a cleaner burn than petroleum diesel. It also has lower emissions than petroleum and is biodegradable (as fast as sugar). It has many advantages for the environment, and the economy. Biodiesel can also be made from locally grown crops. Some projects even make biodiesel from kitchen waste.
Bioethanol
Bioethanol is a renewable fuel that can be produced by fermenting sugars in the presence of oxygen. The process is carried out by yeasts, which are facultative anaerobes that live in sugar-rich environments. You can obtain yeasts for bioethanol production from culture collections or from their natural environments. The best yeasts for bioethanol production are those that are naturally grown. They are more efficient at converting sugars and alcohol.
Biomethane
Although the biomethane renewable fuels industry is very small, there is great potential for growth. It can also be used in existing infrastructure. Policies to decarbonize gas supply will be key to the industry's growth.
Bio-diesel
Bio-diesel, an alternative fuel made from renewable resources, is a form of alternative fuel. It is one of the preferred fuels of the U.S. government, and is also used in the manufacturing and construction industries. As the demand for diesel-powered cars decreases, this renewable fuel is expected grow in popularity. Diesel-powered passenger vehicles account for just 1% of all U.S. vehicle sales.
Bio-ethanol
Ethanol (or carbon-based feedstocks) is a renewable fuel that's made by fermentation. These feedstocks have the ability to harvest sunlight and return nutrients to the earth. These feedstocks include sugar beets (sugar cane), bagasse and sugar beets as well as cellulose sludges.