gasohol, a gasoline extender made from a mixture of gasoline (90%) and ethanol (10%; often obtained by fermenting agricultural crops or crop wastes) or gasoline (97%) and methanol, or wood alcohol (3%).
: a fuel consisting of a blend usually of 10 percent ethanol and 90 percent gasoline.
E10, once commonly known as gasohol, is a fuel mixture of 10 percent ethanol and 90 percent gasoline that can be used in the internal combustion engine of most modern automobiles and light-duty vehicles without need for any modification on the engine or fuel system.
In the United States ethanol biofuel is made primarily from corn (maize) grain, and it is typically blended with gasoline to produce “gasohol,” a fuel that is 10 percent ethanol.
Gasohol gives a higher performance than gasoline, because it has a higher octane rating and more power. This is also one of the automotive alternative fuels which works well in colder climates, because the ethanol prevents the gasoline from freezing in the vehicle.
Power alcohol is a liquid mixture containing 80% petrol, 20% ethanol and a small amount of benzene. It is useful in the field of automobiles to generate energy for its operations.
As nouns the difference between gasoline and gasoholis that gasoline is (uncountable|north america) a flammable liquid consisting of a mixture of refined petroleum hydrocarbons, mainly used as a motor fuel; petrol while gasohol is gasoline mixed with ethyl alcohol.
E20 contains 20% ethanol and 80% gasoline, while E25 contains 25% ethanol. These blends have been widely used in Brazil since the late 1970s. As a response to the 1973 oil crisis, the Brazilian government made mandatory the blend of ethanol fuel with gasoline, fluctuating between 10% to 22% from 1976 until 1992.
Why alcohols cannot be used in CI engines? Explanation: Alcohols have high self-ignition temperature and low latent heat of vaporization. That is why they cannot be used in CI engines. Explanation: Methanol is not used in CI engines because of its high octane number and low cetane number.
The main advantage when using gasohol is that the higher oxygen content of ethanol allows for greater fuel economy and reduction of contaminant emissions [1–3]. Due to the hygroscopic and miscibility properties of ethanol, water can be absorbed from atmosphere and it dilutes the ethanol.
Natural Gas is a smart, low-emission alternative to gasoline and diesel— and it delivers similar horsepower ratings. Premium gasoline is 91 octane, while natural gas has an octane rating of approximately 130. This higher octane allows for the increased engine compression and combustion efficiency of CNG.
Ethanol is a renewable fuel made from various plant materials collectively known as "biomass." More than 98% of U.S. gasoline contains ethanol, typically E10 (10% ethanol, 90% gasoline), to oxygenate the fuel, which reduces air pollution.
Sweden is the leading country in Europe regarding the use of ethanol as fuel, though it has to import most of the ethanol.
Where Does It Come From? Ethanol can be fermented from many sources of starch, including corn, wheat, grain sorghum, barley, and potatoes, and from sugar crops such as sugar cane and sweet sorghum. Because there has been has been an abundant supply of corn, most of the ethanol made in the United States is from corn.
Ethanol is an important industrial chemical; it is used as a solvent, in the synthesis of other organic chemicals, and as an additive to automotive gasoline (forming a mixture known as a gasohol). Ethanol is also the intoxicating ingredient of many alcoholic beverages such as beer, wine, and distilled spirits.
So, an important thing to understand about, ethanol production from corn then, is that this process requires a lot of energy. This is the most energy intensive part of corn ethanol production, is heating up this fermentation slurry of enormous volume of liquid that's mostly water, takes a lot of energy to heat that up.
Ethanol is a domestically produced alternative fuel most commonly made from corn. It is also made from cellulosic feedstocks, such as crop residues and wood—though this is not as common. U.S. ethanol plants are concentrated in the Midwest because of the proximity to corn production.
Ethanol production in Brazil uses sugarcane as feedstock and relies on first-generation technologies based on the use of the sucrose content of sugarcane. There were 378 ethanol plants operating in Brazil by July 2008, 126 dedicated to ethanol production and 252 producing both sugar and ethanol.
Ethanol DistributionEthanol in the U.S. is transported mostly by truck, train, and barge, unlike oil, which is generally transported through pipelines. Unlike oil, ethanol mixes with water.
The United States of America
Six of the best biofuels
- Sugar cane. Sugar can provide high-energy fuel for machines as well as people.
- Palm oil. This is extracted from the fruit of the oil palm tree, which is cultivated in south-east Asia, South America and Africa.
- Oilseed rape.
- Algae.
- Soybeans.
For soybean oil that is converted to biodiesel, the EIA estimates that the cost for 2012/1013 will be about $2.06 per gallon if 50 million gallons are produced about $2.47 per gallon if 200 million gallons are produced.
Biodiesel also releases less air pollutants per net energy gain than ethanol. These advantages of biodiesel over ethanol come from lower agricultural inputs and more efficient conversion of feedstocks to fuel. Neither biofuel can replace much petroleum without impacting food supplies.
Biodiesel is a liquid fuel produced from renewable sources, such as new and used vegetable oils and animal fats and is a cleaner-burning replacement for petroleum-based diesel fuel. Like petroleum-derived diesel, biodiesel is used to fuel compression-ignition (diesel) engines.
Food-based biofuels aren't helping very much. These biofuels offer at best modest GHG reductions compared to gasoline and diesel. At worst, they pollute even more than petroleum. Evidence suggests that cellulosic biofuel from energy crops has much lower land use change emissions than food-based biofuels.
Examples of biofuels include ethanol (often made from corn in the United States and sugarcane in Brazil), biodiesel (sourced from vegetable oils and liquid animal fats), green diesel (derived from algae and other plant sources), and biogas (methane derived from animal manure and other digested organic material).
Biofuels are a renewable energy source, made from organic matter or wastes, that can play a valuable role in reducing carbon dioxide emissions. Biofuels are one of the largest sources of renewable energy in use today. In the transport sector, they are blended with existing fuels such as gasoline and diesel.
The oil industry believes biodiesel is not to blame for problems that car owners are experiencing. Can diesel made from a biodiesel blend be blamed for clogged car filters and nozzles, reduced or lost engine power and costly visits to the garage? No, says the oil industry.
