There are two main types of biofuels — ethanol and biodiesel . The simplest way to distinguish between the two is to remember ethanol is an alcohol and biodiesel is an oil.
Ethanol is an alcohol formed by fermentation and can be used as a replacement for, or additive to, gasoline whereas biodiesel is produced by extracting naturally occurring oils from plants and seeds in a process called transesterification.
Biodiesel can be combusted in diesel engines. Biofuels are grouped by categories - first generation, second generation, and third generation — based on the type of feedstock the input material used to produce them. Biofuels are not as energy dense as conventional transportation fuels.
Biofuels are currently the only viable replacement to hydrocarbon transportation fuels. Because biofuels can be used in existing combustion engines, minimal changes to infrastructure are required for their implementation  Janaun, J. Perspectives on biodiesel as a sustainable fuel. This is their most prominent advantage as concerns about the environmental impacts of fossil fuels continue to rise.
In regions that do not have hydrocarbon resources but do have suitable agricultural conditions, biofuels provide an alternative to foreign fuel imports. They also come from a wide variety of sources and therefore can be produced in many regions. Concerns about biofuels are usually centered around the fact that they are an agricultural product  Demirbas, A. Biofuels sources, biofuel policy, biofuel economy and global biofuel projections.
One key concern about biofuels is that crops grown for fuel production compete with other natural resources, particularly food and water. First generation biofuels use only edible crops which has led to biofuel crops displacing food sources in some regions. In addition, increased agriculture of any form often comes with concerns of deforestation, water and fertilizer use, which all have their own respective environmental and climate impacts.
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- An essay on the benefits and risks of the biofuel industry and their adequacy for the developing world With the constant rise of energy demands on the global market, the ever-on-the-rise cost of fossil fuel and the damage to the environment done in the last century, the effect we are more and more aware, the demand for alternative energy.
Nowadays, as the problem of greenhouse gases emissions is getting more serious, Carbon-negative biofuels represent the first.
Essay on biofuels - Instead of wasting time in inefficient attempts, receive qualified assistance here witness the advantages of professional writing help available . Free Essay: Types of Biofuels: Top five Biofuels used in the world- 1. Biodiesel Biodiesel is an alternative fuel based on vegetable oils or animal fats.
Biofuels are obtained by biomass like wood and straw, which are released by, direct combustion of dry matter and converts it into a gaseous and liquid fuel. Wet organic matters (like sewage, sludge Here is your short essay on Biofuels. Free Essay: In recent years environmental problems, especially the use of fossil fuels, has become one of the most commonly debated issues. It is widely.