In transport sector, bioethanol is considered a main alternative fuel and there is significant increase in production from 17 to 86 billion litres over the period 2000-2011 [1]. There is an expectation to exceed over 125 billion litres by 2020 [1, 2]. Normally ethanol is blended with petrol with several percentages, either low 5% (E5), 10% (E10) or high 85% (E85) [1]. Production Methods: There are several technologies in producing bioethanol depending on raw materials, which can be from annual crops (wheat, maize, sugar-beet, and potato), herbaceous perennials (miscanthus, switchgrass and reed canary grass), woody perennials (short rotation coppice and pine) or residues and wastes (forest Residues, straw and organic municipal waste) [3]. …show more content…
After 2009 each scenario shows different amount of emissions reduction. By using 10% of biofuel the first and second scenarios present maximum emission reduction of 2.54 % and 4.1% respectively in 2020. Third and fourth scenarios achieving 6% emissions reduction with 23.8% and 14.6% of market share. [4] Another study conducted by journal of Applied Energy shows well-to-wheel analysis of energy produced from different types of biofuel and their impact on greenhouse gases emissions. As shown in figure 2, ethanol has lower carbon emissions compared to gasoline and diesel. Specifically ethanol is made of sugar-beet or wood has significantly lower gCO2-equevlent/km than petrol fuels, while wheat ethanol produces greater emissions since fertilisers are used in its production process. [3] Other Considerations: In addition to emissions saving, knocking resistance in gasoline engine is another main advantage of bioethanol since it has a higher octane rating [1]. However, there are other main issues that should be considered such as: 1. Land availability: specifying the location of these lands, the current usage and the net energy gain (NEG) per unit area. Furthermore, the consequences of using these lands on food production and water [5]. 2. Emissions reduction percentage: bioethanol emissions percentage reduction is strongly
The racing industry will come to a standstill (Pahl 05). Even at this moment, certain suppliers are selling biodiesel at the same price as diesel fuel but this trend is unlikely to continue in the future. Using biofuels for racing is an impractical alternative at the moment.
Switching from the expensive oil to alternative fuels has moved from a dream to reality. Today, there are dozens of alternatives to oil that are currently available us to be used. One alternative to oil that is being used more today is ethanol. Derived from plant materials, ethanol can be a cheaper, cleaner alternative to the gasoline that our vehicles run off. When going to gas pumps, one will notice that much of the gasoline is up to 10 percent of ethanol. According to our text, most ethanol in the U.S. is made from corn, yet ethanol can be made from any biomes-- including garbage. (Turk & Bensel, 2011)
In the United States, ethanol is primarily used as a blending element in the production of gas and as an alternative fuel. More than 95% of the gasoline sold in the United States contains ethanol. Most of ethanol blending into U.S. motor gasoline occurs to meet the requirements of the 1990 Clean Air Act (RFG Fuel) and the Renewable Fuel Standard set forth in the Energy Independence and Security Act of 2007. (U.S Energy Information Administration)
Mankind has relied on non-renewable resources for thousands of years, and only recently has it started to take its toll on the environment. Chemists have been experimenting with different types of fuels and adding to gasoline to make it more efficient. This is when ethanol made its debut into the fuel industry, as an additive to gasoline. Ethanol is put into gas as a combatant against water, which can find its way into fuel tanks of vehicles. It reduces the effect that this water has on the health of the vehicle, and as a result increases gas mileage, and also increases the amount of complete combustion. Ethanol consumption has severe drawbacks pertaining to its effect on the environment. Production of ethanol increases the formation of
A major source of controversy when it comes to biodiesel and other biofuels such as ethanol is what ingredient are used to make the fuel. When oils from crops are used, a number of problems can arise. For instance, biodiesel and other biofuels are often touted as environmentally friendly since they are typically made from plants, which suck the global warming gas carbon dioxide from the atmosphere to grow. However, the land may be damaged in order to grow these crops as demand for biofuels grow for example, in Indonesia, biodiesel may be causing deforestation, as native forests are destroyed to make way for palm oil plantations, according to the Union of Concerned Scientists. The chemicals from agricultural fertilizers and pesticides may also upset ecosystems.
Initial research has shown that biodiesel, liter for liter, generates about 90 percent of the heat of traditional fossil fuels, and the resulting air emissions are significantly lower in sulphur, carbon monoxide, and hydrocarbons. Burning these fuels also does not contribute to global warming. Fossil fuels increase the amount of carbon in the atmosphere because the carbon they release upon combustion has been locked away for millennia. The carbon released by the combustion of biodiesel first had to be removed from the atmosphere by the plant that produced the oils it was derived from. Thus, no net gain occurs when said carbon is released. Biodiesel is also safer for people and the environment since it is non-toxic and biodegradable. Oil spills will no longer be multi-million dollar environmental catastrophes.
This class is an elective for me, so I didn’t really know much about energy technologies before taking it and I must say my opinions on different sources of energies have changed completely. For the whole semester now I’ve been trying to think about what I wanted to write about for my final paper, but nothing really tickled my fancy until watching the film “Pump”. This film has opened my eyes to different sources of fuel we could use in vehicles, but really one particular one stood out to me the most and that was ethanol. The reason this particular one stood out to me the most was the fact that Brazil, an entire country, has switched over to ethanol gas.
As seen in Figure 1, the blend of ethanol and diesel produces more energy that standard diesel, and also burns ‘cleaner’ than standard diesel. Diesohol may be considered as an alternative fuel for the future, however the production of diesohols is 14% more expensive than the production of regular diesel. Even with the 14% price increase over diesel, the visible reduction in smoke emissions and consumption of the fuel, it could be a fuel considered for the future. However, further research should be undertaken to fully understand the properties and level of sustainability diesohols will present for
A large part of the alternative fuels boom has been a part of civilization for thousands of years: ethanol. The same substance that makes alcoholic beverages intoxicating is also a useful fuel. Ethanol’s potential as a motor fuel has been known since the first internal combustion engines were made; The Ford Model T was able to run on gasoline, ethanol or any mix of the two (Bettelheim 802).
To solve the rigorous threat to earth from global warming, bio-fuels serve as the most feasible source of energy all over the world. The environmental and economical performance of bio-fuel as compared to fossil fuel was analyzed by full Life Cycle Analyses (LCA) in Spain. The Spanish government CIEMAT, carried out two LCA’s so as to compare ethanol-ethanol mixtures with gasoline, and biodiesel-biodiesel mixtures with fuel oil according to ISO 14040-43 standards, these standards evaluate energy and mass balance for two or more objects. It was concluded that carbon dioxide emission during utilization of bio-fuel are lower than fossil fuel and bio-fuel requires less primary energy to be processed than fossil fuels. Bob Dinneen, President and CEO of the Renewable Fuels Association submitted the letter to the editor of The Gazette in which he marked that “On an environmental level, conventional ethanol is reducing greenhouse gas emissions by 34% compared to petroleum, including hypothetical land use change emissions” (qtd. in renewable fuel association). As the raw material for
For over forty years now, scientists and researchers have been tirelessly searching for an alternative to fossil fuels. Biofuels have become an interesting contender in the search for the replacement of the non-renewable energy source. Biofuels have been used throughout history for over thousands of years. There is a large debate over biofuels and its true impact on the environment. Those involved in the discussion debating whether biofuels have any real overwhelming benefits compared to fossil fuels could argue for its usage. According to recent research performed by the University of Michigan, biofuels may not be the best alternative for fossil fuels. Regardless of its impact on the environment, biofuels are becoming more popular particularly when the price of oil rises.
Biobutanol is a more feasible alternative to gasoline. It is a more viable motor fuel substitute to gasoline, as biomass – from which biobutanol is derived from – is readily available for production and more importantly is a renewable resource. Gasoline is a crude oil product derived from petroleum, which is finite and unsustainable as a motor fuel, because it is increasingly being used up faster than it is being produced. It is expected that with continued research, biobutanol could eventually surpass gasoline as the primary motor fuel. Evidence proves that biobutanol is more acceptable environmentally than gasoline and conveniently, biomass is readily available for the steady production of biobutanol. Biobutanol is more advantageous
In the United States biofuel production has grown a lot over the last two decades. In 1995 production was at 500,000 gallons, by 2005 it was 75 million gallons, and by 2006 it was at 224 million gallons [Biofuels ‘13]. The main plant used in the United States biofuel production was the soybean [Biofuels ‘13]. Currently 4 percent of the world’s demand for primary energy comes from biofuels. The more popular and more well-known hydropower only provides 2 percent of the world’s primary energy demand [Maugeri ‘10]. Most modern cars can use up to a 10 percent biofuel mix in their engines without any modifications, though some cars called flex-fuel can use 100 percent biofuel or gasoline [Maugeri ‘10]. One big advantage to using biofuel is that it produces a higher octane rating than gasoline which helps improve engine performance [Maugeri ‘10]. Biofuels currently cost a little more to make compared to gasoline at about a ten to eight ratio respectively [Sanders ‘10]. Hopefully with more farms producing the components for making biofuels hydroponically it can help drive the price down to where it can be competitive with gasoline and one day completely replace it.
Well we all know that the energy system is very unstable because the total energy available on the earth is limited, and man has exploited all the conventional technologies to fulfill his needs. By the use of these conventional technologies, the world also has a disability, with problems such as global warming. Consumption of energy by man increased gradually as his wants also increase. The conventional energy resources mainly include fossil fuels, but research shows that this fuel source will be depleted completely in approximately 20-25 years. This could cause major setbacks around the world. As a result, we need an alternative source of fuel that could keep the world running on its wheel. One possibility is ethanol. Chemically extract
This essay will first discuss the advantages of using corn ethanol as the main source of fuel in the future, such as the renewable features of corn itself, and the benefits of using corn ethanol as an additive of gasoline instead of using gasoline alone. However, everything has its strengths and weaknesses. Therefore, the second part of the essay will discuss some of the weaknesses in applying the fuel into practical usage. For example, corn ethanol currently encounters technical limitations serving itself as a standalone fuel, meaning that corn ethanol can only function by combining itself with a certain amount of gasoline, while gasoline is a kind of fossil fuel. Lastly, this essay will conduct a comparison with other renewable resources in the world, including solar power, other biofuels, and hydrogen fuel.