Advantages And Disadvantages Of Bioethanol In Brief
Bioethanol advantages
- Exhaust gases of ethanol are much cleaner
- You can use any plant for production of bioethanol, it only has to contain sugar and starch. The best choice is sugar cane, but you can also use potatoes, barley, wheat etc.
- Its is carbon neutral i.e. the carbon dioxide released in the bioethanol production process is the same amount as the one the crops previously absorbed during photosynthesis
- Positive energy balance - Depending to the type of raw stock it can vary from 1.24 to 8. The output of energy during the production is more than the input.
- You can refill bioethanol the same way as petrol. In the US, for example, at the moment there are about 1.5 thousand places where you can you can buy E85.
- The usage of ethanol or fuel-flexible engines will reduce the emission of carbon compounds by 80% and the one of CO2 by 30%
- The factories where you can produce bioethanol are right on the field, because of the high transport expenses of raw material.
Bioethanol disadvantages
- During the production process of bioethanol a huge amount of carbon dioxide is released which makes its ecological effectiveness close to zero.
- The production of ethanol fills the air with greenhouse gases (GHG) in the amounts comparable to the emissions of internal-combustion engines
- The energy content of the petrol is much higher than the one of bioethanol. Burning 1 liter of ethanol gives 34% less energy than burning the same amount of petrol
- The octane number of bioethanol is at around 105. It means that this substance can be burned in the engines with much higher compression ratio. The engines made for working on the new energy are to be in inferior to their petrol or diesel variants.But it is strictly forbidden to fill such engines with petrol – the detonation will immediately destroy it.
- You can not changed the compression ratio only by a button so ethanol is burned ineffectively
- Transportation – ethanol is hygroscopic, it means that it absorbs water from the air and thus has high corrosion aggressiveness. That’s why it is transported only by auto transport or railroad.
- Growing crops for ethanol will affect agriculture. If we use ethanol on 100%. I that order cover 75% of the Earth with the appropriate crops.
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