Biofuel is fuel came from the biological matter in a short time and varies from fossil fuels, which require hundreds and thousands of years to be formed.
Two main types of biofuel are biodiesel and bio-ethanol; bio-ethanol is extensively used in the USA and Brazil and is mostly used as a petroleum additive. Conventional vehicles can use 10% to 15% of bio-ethanol in their petrol, without requiring a modification.
Even with the many advantages of biofuels, but these have several disadvantages to energy sources.
1. Energy production
Traditional fuels have higher output energy than Biofuels fuels, and therefore need larger quantities to be used to produce a similar level of energy.
It has run some well-known energy experts to consider that biofuels are not valued the work to convert them to ethanol relatively than electricity.
2. Carbon emissions productions
Grow crops and cutting forests for biofuels increases carbon emissions. Combusting biofuels, which are most produce carbon dioxide, and hydrogen, that adds to global warming.
So, even biofuels may be able to help comfort our needs of energy; they won’t adopt all of our issues.
Produce biofuels,correctly emissions, clike first plants, consume carbon dioxide, grow and get food. So, plants are capable of decreasing the carbon dioxide amount in the environment, and therefore reduce global warming.
From plants, biofuels, when grown, can so balance their carbon dioxide charges, because they adopt the gas during growth that is made when the fuel is combusted.
Energy has to be put into growing the crop; this energy derives in the process of seed planting, cultivating and preparing the ground, and providing nutrients and water. Like mentioned biofuels is its capability to lower Carbon emissions compared to that of fossil fuels.
Carbon dioxide is one of the leading gases of emissions, while the combusting of biofuels crops carbon dioxide emissions the same as that from regular fossil fuels.
The plant’s feedstock used in the making that absorbs carbon dioxide from the atmosphere when it grows.
Through a technique, Plants absorb carbon dioxide that is recognized as photosynthesis, from sunlight, which allows it to store energy in the method of starches and sugars.
3. High price
To improve biofuels to most effective energy productions, and to form the primary engineering plants to growth biofuel quantities.
Intending to refine the biofuels and make them more energy-efficient fuels, it requires building proper infrastructure. It means that you need to spend a considerable amount to create such a setup.
At present, the production of different biofuels costs more than fossil fuels. It may change in the future when the technology is more advanced and less expensive.
4. Food costs
Demand for crops of foods like grows the corn for biofuel production; it increases costs for necessary main food crops.
Another concern of experts and environmental researchers is because of the food cycle. It is when the demand for biofuel will rise; we require more fuel to grow crops for this reason.
In the future, we will grow large quantities of corn not to eat it but to form biofuel. So, the costs of foodstuffs will rise, making it tough for ordinary people to get their food needs.
5. Food shortages
It is also a concern that consuming important cropland to produce fuel crops might have an effect on the price of food and could maybe show scarcity of foods.
6. Use of Water
Lots of quantities of water are necessary for suitable biofuel crops irrigation to produce fuel, which could drain residents and local water resources.
To grow various fuel crops, you require lots of water; the use of biofuels increases the pressure on water resources in two methods.
For biodiesel, manufacturing water is used for the irrigation of crops as feedstocks, and in refineries water use in the production of biofuels, generally for cooling and boiling.
7. Loss of habitat
Biofuel production would be required more land to be cultivated, it is already considered the main issue, as it may effect in a loss of habitat for several species of animals and plants.
8. Contaminated Nitrous oxide production
While it is not adequate carbon dioxide emission that would cause the greenhouse result, however the combusting of materials to create biofuels produces sufficient nitrous oxide to make a greenhouse effect.
9. Limitations in its use in vehicles
Some types of biofuels need modifications to vehicle engines, and they are still used as additives rather than replacement of fossil fuel.
10. Damage of Cultivable Land
The growth of similar crops is used for biofuel production that can effect the output of the land. Monoculture can mark the value of the soil by absorbing all the essential nutrients.
If you substitute crops, it will need to save the active nutrients of the soil. Biofuel discourages the rotation of crops, which will effect the form of the lands and weakens its general strength.
Monoculture term is used to the preparation of growing one heavily concentrated crop, rather than the rotation of many crops through a farmer’s lands over time.
While this is e an attractive preparation, economically best to make the crop more commercial for the farmer, it can have simple ecological disadvantages.
11. Engine design
The modifications are essential to run internal burning engines on biofuel rely on the type of biofuel used, the same as the type of engine used. Such as petrol engines can work deprived of any modification any on biobutanol.
Some modifications are but required to run on biomethanol or bioethanol; diesel engines can work on the concluding fuels, both on cheaper vegetable oils.