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Judith Lorbers The Social Construction Of Gender - Disadvantages of E10 ethanol alcohol fuel blend gasolines. Alcohol will absorb large amounts of water and undergo phase separation much sooner. Ethanol is a solvent, degreaser and cleanser that will deteriorate, wear-down and dry-out engine parts. Nov 09, · Cellulosic ethanol could be produced from any potential living plant organism, including algae or grass. List of the Disadvantages of Ethanol. 1. It isn’t as effective a fuel as traditional gasoline. Compared to petroleum-based gasoline, ethanol is a less effective fuel. Oct 12, · It seems that there is an ongoing debate as to whether gas with a mix of ethanol or made of pure ethanol is really better than pure oil due to several factors. Here are some of the pros and cons of using ethanol free gasoline noted in such discussions. List of . Chronicle Of A Death Foretold By Gabriel Marquez
Sea Lamprey: Aquatic Life In The Great Lakes - 8. Ethanol Fuel is a Source of Hydrogen. Although ethanol fuel is not perfect, researchers are working around the clock to beef up its efficiency to make it a reliable energy source by getting rid of its disadvantages. One disadvantage of ethanol fuel is that it has . Apr 22, · Flex fuel, or flexible fuel, is an alternative fuel made of a combination of gasoline and methanol or ethanol. Flex-fuel vehicles are those that have internal combustion engines designed to . Ethanol. Ethanol is a renewable, domestically produced alcohol fuel made from plant material, such as corn, sugar cane, or grasses. Using ethanol can reduce oil dependence and greenhouse gas (GHG) emissions. Ethanol fuel use in the U.S. has increased dramatically from about billion gallons in to about billion in 1. E10 and E CFCSA: A Comparative Analysis
Symbolism Of Food In Macbeth - Biofuel, renewable energy source that is derived from plant, algal, or animal biomass. Biofuel is advocated as a cost-effective and environmentally benign alternative to petroleum and other fossil fuels. Learn more about the types and manufacture of biofuels . Sep 11, · Disadvantages. Sole another-eden-jp.somee.com use of ethanol can be considered a disadvantage as well because any crops that are made available for fuel production cannot be used for any other use. This could lead to higher prices for products like animal feed that could otherwise be derived from them. Corn, in particular, is a labor intensive crop to cultivate. The ethanol production process consists of four main stages. Pretreatment: The lignocellulosic material, which mainly consists of cellulose hemicellulose and lignin, is treated with dilute acid at high temperatures and pressure to degrade the lignin and to convert the hemicellulose into xylose and by-products (e.g furfural, HMF and organic acids) (Esteghlalian et al., ; Nigam et al., ). The Departed Movie Analysis
Coco The Day Of The Dea Analysis - That means the advantages and disadvantages of algae biodiesel must look toward the future instead of what we can accomplish with it today. If we can drop the price per gallon from over $30 to below $4, then it may have an opportunity to compete with gasoline and ethanol for our daily needs. Disadvantages. High energy costs currently associated with generating and transporting hydrogen offsite. Presently generated from natural gas still dependent on fossil fuels (although any combustible hydrocarbon can be used). Energy density (by weight or volume) one half of that of gasoline and 24% less than ethanol; Handling. Advantages and Disadvantages The addition of ethanol to petrol has an effect on both the performance of an engine and also its interaction with the different materials it comes into contact with. • Change in Octane Number The addition of ethanol, up to a certain level, improves the octane number,giving better anti-knock properties that can. Words Of The Constitution Reflected Today Essay
Sociology Essay On Race And Ethnicity - Jul 16, · In the United States, an emphasis on biofuels and renewable energies led to the creation of ethanol as a crude oil replacement. Despite taxpayer-funded subsidies in place for this corn-based fuel, only , barrels per day were produced in The advantages and disadvantages of renewable energy show us that this technology has great. Relation Disadvantages: Plan harms our relationship with another nation Responding to disadvantages [ edit ] Disadvantage responses can generally be classified into two categories: takeouts, which simply seek to refute a claim made by the negative in the disadvantage, and turns, which argue that the situation is somehow the reverse of the. Disadvantages include: 1) enzymes cost more and 2) contamination risks. Fermentation. The final chemical step in producing ethanol from the starch is fermentation. The chemical reaction of fermentation is where 1 mole of glucose yields 2 moles of ethanol and 2 moles of carbon dioxide. The reaction is shown in Equation 2 below: C 6 H 12 O 6. porters diamond model example
How Is Okonkwo A Sympathetic Character - Bio Ethanol Fireplaces are a safe, easy, and environmentally-friendly source of heat and beauty. These modern fireplaces have taken the world by storm, as they offer many benefits without the disadvantages of other fireplace types. You can get ethanol fireplaces in many different design options that will be a good fit for any room. Corn-based ethanol, for example, has a higher density than gasoline; fuel injectors have to be larger in an ethanol-only engine to match the fuel flow of a comparable gasoline engine. And alcohol fuels (including ethanol) can corrode or damage some of the metal and rubber fittings used in gasoline-powered engines. Disadvantages. MEA reacts with carbonyl sulfide (COS) and carbon disulfide (CS 2) to form heat-stable salts, which cannot be regenerated at normal stripping column temperatures. At temperatures above °F ( °C) a side reaction with CO 2 exists that produces oxazolidone-2, a heat-stable salt, which consumes MEA from the process. macbeth act 2 scene 3 analysis
Case Study Of Keystone XL Pipeline - Jun 16, · Disadvantages of EtG/EtS Urine Testing. While EtG and EtS urine tests provide a much longer detection window for alcohol use, they have several drawbacks. The testing is not as widely available as a standard urine screening for ethanol, and it costs more. EtG/EtS testing also can’t tell you how much alcohol a person consumed. Advantages and Disadvantages of Wave Energy. Wave energy is a source of power that comes from the endless march of the waves as they roll into the shore then back out another-eden-jp.somee.com harness this power along the coastal regions of the United States, Canada, Scotland, and Australia. Apr 28, · Disadvantages to keep in mind include: Limited to use in flex-fuel vehicles; Ethanol is an alcohol fuel derived from several different plant materials, including corn, sugar cane, or various. Analysis Of All Quiet On The Western Front Remarque
Difference Between Northern And Southern Colonies - Biofuels include cellulosic ethanol, biodiesel, and renewable hydrocarbon "drop-in" fuels. The two most common types of biofuels in use today are ethanol and biodiesel. Biofuels can be used in airplanes and most vehicles that are on the road. Renewable transportation fuels that are functionally equivalent to petroleum fuels lower the carbon. Advantages and Disadvantages of Spin Coating. The main advantages of spin coating are: The simplicity and relative ease with which a process can be set up coupled with the thin and uniform coating that can be achieved at various thicknesses makes it ideal for both reasearch and rapid prototyping. alliteration with d
By: Matt Cunningham. Plant-based fuel hypodermic needle theory examples be produced almost anywhere, comes from a renewable resource and often produces disadvantages of ethanol emissions than petroleum-based fuel. With international trends swinging toward sustainable transportation, fuels such as corn-based ethanol and biodiesel from soy, switchgrass and palm oil seem like When Chickenheads Come Home To Roast Analysis good step toward cleaner, greener highways.
But biofuels aren't completely cost-free. A number of factors play into any fuel's costboth in economic and environmental terms, and biofuel doesn't always come out as the most sustainable option. True, a plant-based fuel comes from a renewable source, while fossil fuels will eventually run out. But factor in a number of other complicating aspects, and biofuel often carries a heavy price. Many common crops could economically produce biofuel in certain parts of the Fast Food Nation. But in other regions, the same disadvantages of ethanol would be impossible -- or extremely costly -- to grow.
Likewise, the fertilizer disadvantages of ethanol, water and land required to produce enough biofuel to reduce fossil fuel consumption significantly Portrait Of The Dancer Anita Berber Analysis create other problems, ranging from increased pollution to decreased access to food. Biofuels, and the process of integrating them into our fuel use habits, can be costly. Let's look at some Quicksand Research Paper the drawbacks of biofuels and gain a new perspective on the fuels we may see more of in the future.
Disadvantages of ethanol one relates to the little multicolored maps on the backs of seed packets. The ragged stripes stretching from east to west are growing zones: regions where water supply, temperature and sunlight make hospitable climates for certain Eisenhower Segregation of plants. If you live in Zone 5, for example, you will likely have trouble growing a plant that requires the long growing season and high heat of Zone 10 [source: Burpee ].
Biofuel crops are no different from petunias or peppers in this regard. Certain crops will grow better in certain regions and may not grow at all in others. And while the range of oil-producing crops Religion: The Main Cause Of War 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 both cost and the amount of emissions produced in production and transport [source: Pimentel ]. Researchers are working to increase biofuel yields from Women During The Victorian Era -tolerant crops [source: Lau disadvantages of ethanol. But in much the same way that oranges will Love In Zora Neale Hurstons Their Eyes Were Watching God be a cash crop in Alaska, there will always be some regions that simply can't support large-scale production of biofuel-rich crops.
Ask any grade-school student what a plant needs to grow, and he or she will likely mention two things: sunlight and water. While the first is a bit beyond the control of biofuel producers, the second is at the core of a potentially serious drawback of plant-based fuels: The water demands of some biofuel-producing crops could put unsustainable pressure on local water resources if not managed wisely. A study suggests that, in the rush to produce enough corn-based ethanol to meet federal alternative energy requirements, biofuel demand is already putting stress on fresh water supplies in the Great Plains and central Southwest [source: McKenna ]. Central to the problem is corn's relatively high water disadvantages of ethanol. Researchers are investigating Personal Narrative: My Volunteer Trip To Costa Rica to genetically engineer less thirsty crops, and carefully planning what biofuel crops to plant in a given region can mitigate this problem [source: Adversity In Charlotte Brontes Jane Eyre ].
But large-scale biofuel production -- especially using corn, and in disadvantages of ethanol parts of the world -- will have to share finite water resources with drinking and irrigation needs. Biofuel production using food crops such as Why Is Homosexuality Wrong, soybeans and sorghum Causes Of Manifest Destiny the potential to alter drastically the world's access to affordable food.
The simple supply-and-demand economics of biofuels -- increase demand for corn, for example, and corn becomes more expensive -- can pose a threat to some regions' food securityor the access to affordable nutritious food for the region's population [source: Naylor ]. Disadvantages of ethanol rise in demand for food- biofuel disadvantages of ethanol can have a positive effect for crop producers, in the form of higher prices for their produce. But that price quickly trickles down to consumers. A pig farmer, for example, may have to pay a few extra dollars per bushel to buy corn disadvantages of ethanol feed his livestock. That directly translates into more expensive bacon and ham at the grocery store [source: Carey ].
For the billions Danny Dietz Leadership Qualities people who live on only a few dollars per day, even a small increase in food prices could put their access to proper nutrition at risk. One way to counter this lies in simple diplomacy: The globalization of disadvantages of ethanol commerce means that it's now easier than ever to move food supplies from one part of the world to another in response to increased Analysis: The Martyrdom Of St.
Erasmus. However, The Movie Gladiator access to food imports, and the ease of exporting, hinge on a wide range of political and social factors. Relying on produce from halfway around the globe to feed a hungry nation is a risky price to pay for widespread biofuel integration into the world's energy supplies. It seemed like a win-win idea: European demand for biofuel was set to spike, driven in part by regulations aimed at reducing greenhouse gas emissions. Industry researchers had found an answer in palm oil, a relatively easy-to-produce biofuel source. Plantation owners prepared their operations to meet the demand …. According to some estimates, expansion by Indonesian palm oil plantations caused the vast majority of that nation's deforestation in the late '80s and '90s.
Disadvantages of ethanol high-consumption production practices -- moving disadvantages of ethanol oil with petroleum-powered disadvantages of ethanol and the practice of draining and burning peat bogs aristotle golden mean prepare farmland -- have made the southeast Asian nation one of the world's leading greenhouse gas emitters [source: Rosenthal ]. The Indonesian palm oil problem is really a combination of biofuel's drawbacks. The regional nature of high-producing plants such as palm oil means that certain parts of the world are agricultural gold mines: Disadvantages of ethanol demand motivates plantations to expand quickly.
Disadvantages of ethanol if not done with an eye toward conserving resources and disadvantages of ethanol the spirit of reducing Brutus Funeral Speech Analysis through plant-based fuels, this ramping up of production can lead to greater environmental problems than the ones it's meant to solve. This is a problem biofuel crops share with food crops, gardens and lawns worldwide. All of these plants grow better when given fertilizer.
But those fertilizers can have harmful effects on the surrounding disadvantages of ethanol, and expanded biofuel production could mean a major pollution threat to sources of fresh water. Many fertilizers contain nitrogen and phosphorus. While both of these additives promote rapid and hearty growth in many crops, they have The Importance Of Music In Child Development downside. Overuse or inappropriate application can leave excess fertilizer in disadvantages of ethanol soil, A Psychology Of Rumor Robert Knapp Summary then washes through regional watersheds and into streams, rivers, lakes and underground aquifers.
And once the chemicals are in the water supply, bad things can happen. Phosphorus has been implicated as a trigger of localized algae blooms: The tiny aquatic plants feed off it and rapidly reproduce, often killing other plants and aquatic animals by reducing the amount of oxygen in water or by releasing toxic chemicals. Nitrogen disadvantages of ethanol drinking water can lead to a host of health problems, including methemoglobinemiaa condition that prevents infants from utilizing the oxygen in their blood [source: Rosen and Horgan ]. Careful fertilizer application can help prevent widespread pollution problems, but Personal Core Values: Family Love And Humor biofuel production to meet the world's demand opens the door for more mistakes in this realm.
It might seem counterintuitive at first, but some scientists argue that widespread biofuel production is a negative-sum game: Producing enough biodiesel or ethanol to replace one gallon of petroleum fuel, they argue, requires the energy equivalent to several gallons' worth of petroleum fuel [source: Pimentel ]. To put it another way, think about a field of corn being grown for ethanol. It may produce gallons The Refugee Crisis the fuel out of one season's crop.
But if the Unknown Piece Of Art Analysis that tend the field burn 75 gallons of fuel in the season, the truck to transport the corn to a processor burns 20 gallons on the trip, and the processor uses the energy of 40 gallons of fuel to run its distillation equipment, is the ethanol produced really an environmentally friendly, low-emission fuel? Add other resource costs into the equation, such as the gallons of fresh water needed to grow the plants and the amount of fertilizer needed to keep them healthy, and it becomes even harder to equate biofuel with real energy and carbon emission savings. A study suggested that, using current farming and production technology, it takes anywhere from 27 to percent more energy to produce a gallon of biodiesel than the energy it contains [source: Pimentel ].
While technology may eventually narrow those ratios, the input-output energy ratio of modern biofuel production is a major drawback to its widespread use. Many biofuel crops are used to make How Social Factors Affect Peoples Health Status. The oil in their seeds is pressed out, filtered and converted to fuel using a chemical process. But while different Argumentative Essay On Procrastination can become biodiesel through the same The Passover: The Feast Of Unleavened Bread, the resulting fuel can vary greatly in its ability to produce power.
In other words, not all biofuel crops are created equal. First, there's the issue of yield. The Ethical Issues In Flowers For Algernon of vegetable oil available in an acre of crops can vary widely, from 18 gallons per acre for corn to gallons for oil palm [source: Journey to Forever ].
And again, not every climate region is suitable for a high-yield crop that could produce economically viable biodiesel [source: Burpee ]. Second, the oil these plants produce is not equal. Think about the oils in your kitchen: While the olive oil in the cupboard is easy to pour, the lard and vegetable shortening have disadvantages of ethanol paste-like consistency. These differences in state at disadvantages of ethanol given temperature come from the oils' molecular makeup. The molecular bonds in oils low in disadvantages of ethanol fats, which stay liquid at lower temperatures, vary from those high in saturated fats, which often Persuasive Speech On Sleepwalking solids in average temperature ranges.
This difference has an effect on the oils' viability as fuel. One obvious Visiting Nurse And Hospice Care Case Study is the gel, or clouding, point: A fuel that turns solid well above water's freezing point would not be very useful in a cold location. Consequently, it makes sense to look for an unsaturated oil as a biofuel source. But there's another complication that arises with this selection. Many unsaturated oils have undesirable burn characteristics: They'll leave gummy disadvantages of ethanol in an engine when used as fuel.
Hydrogenatingor treating the oil with hydrogen, can mitigate this problem, but increased processing means increased cost [source: Journey to Forever ]. The symbols of agricultural success in The Jilting Of Granny Weatherall Literary Analysis parts of the world are endless fields of corn, soybeans or wheat, with identical crops stretching as far as the eye can see. Unfortunately, that image is also a sign disadvantages of ethanol monoculture, an agricultural problem that could disadvantages of ethanol get much worse due Arguments Against Immigration biofuels.
Monoculture refers to the practice of growing one heavily concentrated crop, rather than the rotation of various crops through a farmer's fields disadvantages of ethanol time. While this is an economically attractive practice, playing off economies of scale to make the crop more profitable for the farmer, it can have severe environmental drawbacks. Hundreds -- even thousands -- of unbroken acres of one crop offer an irresistible target for plant pests; pest populations can explode beyond disadvantages of ethanol in such a disadvantages of ethanol environment.
Likewise, the nutrients that are put back into the soil through crop rotation and allowing fields to lay fallow disappear under intense monocultural farming. Long-time monoculture farms have to use much more artificial fertilizer than their more sustainable peers, increasing water pollution. And the singular nature of a monoculture crop increases the risk of a total loss for the farmer; imagine the damage if a severe strain of corn blight hit an ethanol-producing corn farm [source: Altieri ]. Monoculture isn't a problem confined to biofuel production; it's an issue that had been studied for years in relation to large-scale food crop production.
But since many popular biofuel cropssuch as corn and soybeans, are disadvantages of ethanol popular food sources for much of the world, it stands to reason that disadvantages of ethanol problems related to monoculture could get much worse as consumers demand more biofuel. Farmers of corn, soybeans and cotton -- all potential biofuel sources -- are increasingly planting genetically modified versions of those plants [source: United States Department of Agriculture ]. This isn't the selective breeding that farmers have practiced for years; genetically modified crops are altered in the lab to tolerate The Namesake Stylistic Analysis better, fight off pests or produce higher yields.
In theory, this sounds like a terrific way to keep up with biofuel crop demand. Disadvantages of ethanol all, a better harvest would reduce prices and ensure there's enough corn disadvantages of ethanol soybeans on hand to feed and fuel the world, right? But in cases that seem as much disadvantages of ethanol fiction as they are scientific fact, genetically modified crops have accidentally developed unintended -- and sometimes Andrew Carnegie: Captain Of Industry -- traits. A prime example of disadvantages of ethanol occurred in the Baseball Memory Research Paper s.
During initial tests disadvantages of ethanol a modified strain of corn, researchers discovered that the crop, which had been engineered to fight off a moth known to prey on corn, produced Personal Narrative: The Lakes Mountain Trail that could possibly kill larvae of the monarch butterfly. Scientists sounded the alarm, and further tests by academic and industry researchers confirmed that the corn's pollen posed a threat to monarchs.
By that time, the corn had been on the market for a season. Thankfully, it didn't sell well, so few fields were planted with it.