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Benefits and detriments of biofuels
Biofuels arrgumentetiv essay
Benefits and detriments of biofuels
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Coal and crude oil are non-renewable resources. They take an extreme amount of time to form and due to that, they cannot be replaced once they have all been used up. However, when it comes to the biofuels, they are produced from plant material and are renewable. There are two types of biofuels: Biodiesel, which is made from rapeseed oil and other plant oils and is used in diesel-powered vehicles without needing any modifications to the engine, and Bioethanol, which is a liquid fuel that burns quite well and is made by fermenting sugars from sugar cane, wheat and other plants. In this essay, whether or not biofuels are becoming an increasingly important alternative to traditional forms of energy under environmental and economic benefits and …show more content…
Monoculture would be an environmental disadvantage; by growing the same crops year after year rather than producing various crops through a farmer’s field, over time, even as this might be economically attractive for farmers, growing the same crop may deprive the soil of nutrients that are put back into the soil through crop rotation. Moreover, the use of fertilizers in order to grow crops better would also be a downside since they can have harmful effects on surrounding environment and may cause water pollution. Fertilizers contain nitrogen and phosphorus. They can definitely be washed away from soil to a nearby lake, river or pond. The amount of land required to meet the world’s energy needs using biofuels is a major concern. Depending on feedstock, the requirements can be massive. Algae would need 68,000 square kilometers to meet the needs of the aviation industry. That is an area roughly the size of all of Ireland. Of course this would put most off of biofuels considering that, even it has been around for a while, it still needs developing. Most believe that there is not enough land currently in use to meet fuel needs. That means forested areas would need to be cleared. This would release vast amounts of carbon. The impacts of biofuels on greenhouse gas emissions were originally measured by only the direct land use changes. However, when indirect land-use changes are …show more content…
A gallon of ethanol contains 80,000 BTU of energy compared with 124,800 BTU for the same amount of gasoline. That means the average person would have to buy 1.56 gallons of ethanol for every gallon of regular gasoline. Some would say that it’s cheaper. However, technically, a gallon of ethanol costs 19.9% less than gas, but since it will have to be filled up more often, the ethanol ends up costing more. Many common crops could economically produce biofuels in certain parts of the world. But in other regions, the same plants would be impossible, or extremely costly, to grow. Certain crops will grow better in certain regions and may not grow at all in others. And while the range of oil-producing crops considered viable for biofuel production is wide enough to fit most growing zones, the most productive crops simply won’t grow everywhere. Consumers living in a low producing region would need to have biofuel trucked or piped to them increasing the cost of production and transport. Nevertheless, researchers are working to increase biofuel yields from weather-tolerant crops, but in much the same way that oranges will never be a cash crop in Alaska, there will always be some regions that simply cannot support large-scale production of biofuel-rich
In conclusion, Corn Ethanol Biofuel has many negative and positive effects. It has a negative effect because it releases greenhouse gases but positive effects as well because it is inexpensive to produce and use, and is a renewable source. The future of corn ethanol is uncertain: “Corn-based ethanol will most likely not be the staple fuel source in the future, as it is only a short term solution and poses problems in the long run. Ethanol contains 33% less energy than gasoline, and corrodes engines that it is used in. Average production and final sales are 62 cents/gal higher than conventional gasoline. Even though political support is waning, Congress will most likely not abandon corn ethanol.” ("Future of Corn Ethanol.) I think corn ethanol
Tyner, Wallace. “The U.S. Ethanol and Biofuels Boom: Its Origins, Current Status, and Future Prospects.” BioScience. August 2008. Vol 58 (7):646
There is a lot of talk about the world’s source of energy going on these days and people are starting to ask questions about our sources of energy. Is it environmentally friendly? Does it make sense economically? For years the world has been highly dependent on fossil fuels that are extracted from the ground. These fuels power things from power plants, cars, plains, and many of the other modern conveniences that we enjoy. There is a lot of energy expended in the extraction and transport of these fuels as well as many negative environmental impacts. Scientists are busy finding alternative ways to power our world that are cost efficient and ecofriendly. One idea that is being explored as an effective replacement is producing oil from algae. Algae have a high content of oil, about 50 percent of its weight, and science is finding a way to use it as a clean fuel source.
Biodiesel is considered an environmentally friendly alternative because it reduces the amount many toxic substances. Plants such as soybeans require carbon dioxide from the air to produce their stems, roots and leaves. During biodiesel production from soybean oil, carbon dioxide is produced and released in the atmosphere. Carbon dioxide is considered a green house gas (GHG). However, this cycle of GHG emission does not neccersarily contribute to the atmospheric carbon dioxide levels. This is because the next soybean crop will reuse the carbon dioxide emitted for its growth. Another important environmental benefit is that biodiesel reduces particulate matter (PM), hydrocarbon (HC) and carbon monoxide (CO) emissions. These benefits occur because biodiesel contains 11% oxygen by weight. Oxygen allows the fuel to burn better, resulting in fewer emissions from unburned fuel. And lastly, biodiesel fuels do not contain any sulfur and does not have an unpleasant smell when it is emitted from vehicles.
The problem today is the gas companies make too much on their products. Shell's profits jumped enormously in only three months. The Company announced an 80% jump in earnings for the last three months, to $3.25 billion (Shell Posts Record Profits). Ethanol would allow these profits to go straight to
In the United States we have been looking into alternative energies to reduce our dependence on oil and help reduce our carbon footprint. One method the EPA has come out in support of is ethanol production. Ethanol is considered a green fuel because it recycles the burned carbon each time new crops are grown. In theory ethanol is a good stepping stone between using gasoline and zero emission power sources. However biofuels are still young technology that has many problems before it can be useful. The EPA is in full support of biofuels and has mandated that by 2020, 36 billion gallons of biofuels are to be produced in America. Currently almost all of America biofuels comes in the form of corn based ethanol which is extremely inefficient and can cause sustainability problems. Due to this reason only 15 billion gallons of the mandated biofuels can be form corn based ethanol. The rest of the biofuel must come from non-corn based alternatives such as cellulosic ethanol which the EPA projects to create all most all of the 21 billion remaining gallons of ethanol. Cellulosic ethanol uses the cellulose that is in all plants matter to create ethanol. Cellulosic ethanol is far more efficient than corn ethanol because you can use the whole plant and it sets no limitation on what type of plant matter can be used. Even though the EPA projects that these number will be achievable, due to current setbacks and efficiencies cellulosic ethanol will not be able to meet this output within the time constraints and a goal of 2034 years would be more realistic in the long run.
When speaking about biofuels Koh and Ghazoul (2008, 2452) stated: “In its simplest analysis, biofuels are considered to be carbon neutral because all CO2 released during biofuel combustion is offset by carbon fixation during plant growth”. Hawaii is perfect for biofuels because according to Tran et al. (2011, 1757), “The Hawaiian Islands have varying agro-climatic regions with a year-round growing season, and relatively large arable lands.” This allows for a variety of fuel crops to be grown in Hawaii. Banagrass, Sugarcane, Eucalyptus, Leuca...
Ethanol production was developed in hopes of severing our ties with fossil fuels in favor of alternative energy, such as biofuels. Although, VOCs emissions are released during production of ethanol in a factory, the quality of air is greatly improved when burning ethanol versus fossil fuels. Burning ethanol instead of fossil fuels reduces the amount of cancer-causing greenhouse gases that go into the atmosphere. Ethanol production ranks at the bottom of industrial water usage, but is still not out of the woods with the abundance of water usage needed in corn feedstock and ethanol manufacturing and processing facilities. Many acres of land are needed to grow corn crops, however, many corn farmers are successful in growing more corn on less acreage.
It is believed that the world's supply of oil will last until about 2040. If you think about it, that’s not too far in the distance future. Oil is running out fast and we need to think of an alternate energy source. When we burn oil, we release carbon dioxide into the air which causes the earth’s climate to warm; a temperature rise of 3.6 degrees Fahrenheit could have serious if not devastating consequences. In the United States alone 60 percent of each person’s carbon footprint comes from the goods they buy, while the other 40 percent comes from their energy use at home, driving, and flying. That totals out to be about 10 billion tons a year. There are other energy sources but let’s think about the environmental and energy benefits of algae biofuel. Algae was first explored as a fuel alternative in 1978. Gas prices had skyrocketed, and the government was looking to help ease the crisis. The Aquatic Species Program run by the National Renewable Energy Laboratory, researched high oil-output algae for biofuel. After testing 3,000 types of algae, the program concluded that the algae, if...
Secondly, the use of biofuels is not a cost effective option as they are more expensive than fossil fuels. According to the County Commissions of the US Department of Agriculture and North Dakota State University, there are around seven biodiesel producers in the US. Biodiesel is the mix of biofuel and diesel in 20:80 ratio, which means that the cost of biodiesel will be around 20$ more ...
Other than pollutions, diseases are also problematic since monocultures are very susceptible to diseases. Outbreaks of disease in shrimp can cause the whole shrimp population in one area to become ill resulting in shutting down of the farm. Not only that, ill shrimps will rise up to the surface and be eaten by the seagulls, spreading the pathogen to other nearby shrimp farms as well.
However, it opens up jobs to many people, and is beneficial to them. We can research organic agriculture with human nutrition in mind, and educate ourselves on how organic agricultural systems work. The downsides to organic agriculture include smaller yields on smaller areas of land compared to conventional agriculture and that most organically grown food costs 10-100% more than conventionally produced food, primarily because organic farming is more labor intensive. Industrialized agriculture has a greater harmful impact on the environment than any other human activity.
Some of the ways we try to combat Climate Change differes from region to region and culure to culture. One of the remedies that seems to be adapting all around the world is the use of biofuels instead of using fossil fuels. People believe that instead of digging up and using oil and petroleum, our best solution to combat greenhouse gases emitted by fossil fuels is to plant soybeans, sugar cane, palm oil and use that as a replacement. More cars are flex fuled, and use ethenol mixed with petroleum to lessen the use of oil since oil prices are only going to increase with the decreasing amount that is
It’s also helpful to consider first generation biofuels in comparison to second generation biofuels. Ethanol pr...
The concept of this essay is to stress that biofuels are a viable and sustainable energy source than fossil fuels, showing its advantages but not ignoring its disadvantages which also enlightens us about the cleaner and renewable natural resources. Biofuels is an alternative source of energy which can end the global dependence on fossil fuels.