The primary fuels include gasoline, diesel, and emerging alternative fuels
such as ethanol, compressed natural gas, and biodiesel.
Use of biofuels
such as ethanol or biodiesel could also play an important role in saving fossil fuels.
The Canadian Renewable Fuels Association (CFRA) is dedicated to promoting the growth of biofuels
such as ethanol and biodiesel as a way to not only reduce greenhouse gas emissions, but channel a largely untapped source for Canadian jobs and local
Federal law mandates that oil companies use 12 billion gallons of renewable fuels
such as ethanol in this year, rising to 15 billion gallons by 2015.
Though solar energy remains expensive, reducing a ton of emissions by generating electricity from essentially carbon - free sources such as nuclear or wind energy is cheaper than reducing a ton of emissions through low - carbon transportation fuels
such as ethanol.
Al - Naimi cited alternative fuels
such as ethanol and Canadian tar sands as reasons for a new oil price floor.
Pursuant to that law, an increasing amount of renewable fuel
such as ethanol — rising to 36 billion gallons in 2022 — must be introduced into the market.
As a cheap, onboard source of hydrogen, a liquid fuel
such as ethanol - water is safe.
Burning renewable fuels,
such as ethanol, can reduce air pollutant emissions, but critics argue that gasoline blended with too much ethanol can interfere with emissions control systems in some automobiles and actually lead to higher emissions.
But the engineers who run the Chinese ship of state are nothing if not good at math, and they have committed to making real changes — building mass - transit systems, introducing alternative fuels
such as ethanol, and promoting fuel efficiency and electric cars.
Also, some would consider subsidies for biofuels,
such as ethanol, as falling within this category of climate - friendly subsidies, but clearly that is a matter of considerable controversy.
Biofuel is bioenergy converted into a liquid fuel
such as ethanol or biodiesel, but biomass can also be converted into gaseous fuels via biological or chemical processes such as digestion and gasification.
The report warned that increasing production of liquid biofuels,
such as ethanol and biodiesel, could increase the price of agricultural commodities with negative economic and social impacts, especially for the world's poor who spend a large proportion of income on food.
[From Green Car Congress:] EPA Administrator Stephen L. Johnson today proposed a Renewable Fuel Standard (RFS) Program designed to double the US use of renewable fuels
such as ethanol and biodiesel.
The Arizona senator is also proposing stiffer fines for automakers who skirt existing fuel - efficiency standards, as well as incentives to increase use of domestic and foreign alcohol - based fuels
such as ethanol.
It's now well - established that large - scale U.S. production of biofuels
such as ethanol from corn has accomplished little or nothing (or even negative) in its stated goals of reducing oil dependence and cutting emissions of greenhouse gases, and has functioned instead as a full - employment program for agribusiness (and a political production racket for Iowa and other corn - growing states).
Crops can be used to produce automotive fuels,
such as ethanol and biodiesel.
It does not involve «flexible - fuel» vehicles, which can run on alternative fuels
such as ethanol or natural gas, or those made after September 1999.
«It can be used in existing engines and transported in existing pipelines,» whereas some current biofuels,
such as ethanol, do not fit as well into today's commercial fuel infrastructure, he said.
Plant - derived biofuels
such as ethanol offer renewable - energy alternatives to fossil fuels.
The team focused on yeast in part because of its important modern - day applications; yeasts are used to convert the sugars of biomass feedstocks into biofuels
such as ethanol and industrial chemicals such as lactic acid, or to break down organic pollutants.
But making that dream a reality could harm local environments and would require developing new technology to harvest, process and convert such plant material into biofuels
such as ethanol.
Moving forward, the team will continue to work on their device to scale up the production of ethylene as well as employ similar systems to produce liquid fuels
such as ethanol and propanol.
«It takes 77 million years to make fossil fuels and 45 minutes to use as a coffee cup,» says Cereplast's Scheer, noting that his industry can use the residue of government - mandated production of biofuels,
such as ethanol from corn.
Examples of indirect use which require energy harvesting are electricity generation through wind turbines or photovoltaic cells, or production of fuels
such as ethanol from biomass.
Solubilities range widely, from infinitely soluble
such as ethanol in water, to poorly soluble, such as silver chloride in water.
Certain substances are soluble in all proportions with a given solvent,
such as ethanol in water.
Scientists have experimented for decades with a class of catalysts known as zeolites that transform alcohols
such as ethanol into higher - grade hydrocarbons.
The process of dissolving, called dissolution, is relatively straightforward for covalent substances
such as ethanol.
The Obama administration seems to agree, granting $ 786 million in 2009 for biofuels research and setting up the Biofuels Interagency Working Group to study how best to meet the renewable fuel standard mandated by Congress that will require increasing the amount of renewable fuels,
such as ethanol, to 36 billion gallons by 2022.
Biofuels from waste avoid the carbon and energy debts incurred by more common examples
such as ethanol from corn or diesel from soy.
Not exact matches
For other recipes beware that extractives (
such as vanilla) are usually extracted in corn - derived
ethanol.
The fermentation may be pure or impure, i.e. the end product may be almost exclusively lactic acid (homofermentative fermentation), or other substances may also be produced,
such as acetic acid, carbon dioxide and
ethanol (heterofermentative fermentation).
«The idea is that a small reduction in alcohol —
such as beer with four per cent
ethanol content versus six per cent — would reduce alcohol intake per drinker even if the same overall amount of beverage is consumed,» says Dr. Jürgen Rehm, lead author and Director of the Institute for Mental Health Policy Research at the Centre for Addiction and Mental Health (CAMH) in Toronto, Canada.
Unlike other solid - to - liquid - fuel processes
such as cornstarch into
ethanol, this one will accept almost any carbon - based feedstock.
Renewable energy,
such as from photovoltaic electricity and
ethanol, today supplies less than 7 percent of U.S. consumption.
By turning crops
such as corn, sugarcane and palm oil into biofuels — whether
ethanol, biodiesel, or something else — proponents hope to reap the benefits of the carbon soaked up
as the plants grow to offset the carbon dioxide (CO2) emitted when the resulting fuel is burned.
Cellulose - loving fungi can cut biofuel costs by enabling existing corn
ethanol plants to process cheaper, woody feedstocks
such as corn stover
Commercial - scale efforts have existed for over a hundred years that convert corn, sugar cane and other plant - based substances into a wide array of products, ranging from fuel
such as corn - based
ethanol to ingredients in many consumer goods,
such as soap and detergents.
The team achieved better hydrogen yields using methanol and
ethanol as starting materials but because glucose can be derived from plant waste
such as wood pulp, straw and leftovers from corn production, the scientists will continue to work on their approach.
Data collection was performed from January to May 2011, and the analyses took place before, during and after a sharp fluctuation in
ethanol prices — owing to macroeconomic factors
such as the international price of sugar (Brazilian
ethanol is made from sugarcane)-- leading consumers to switch motor fuels in São Paulo City.
Standard laboratory DNA isolation methods,
such as sonication, ribonuclease (RNase) treatment, and
ethanol precipitation may reduce the available pool of DNA enough to prevent recovering usable sequences from the oldest samples.
Several US states,
such as California, have laws requiring a 20 % -30 %
ethanol blend in gasoline, which also helps reduce emissions of ultrafine particulate matter.
While both can be obtained from petroleum or natural gas,
ethanol may be the most interesting because many believe it to be a renewable resource, easily obtained from sugar or starch in crops and other agricultural produce
such as grain, sugarcane or even lactose.
«Our method of direct conversion of
ethanol offers a pathway to produce suitable hydrocarbon blend - stock that may be blended at a refinery to yield fuels
such as gasoline, diesel and jet fuel or commodity chemicals,» Narula said.
Jay Keasling, a chemical engineer at the University of California, Berkeley, is one of several investigators trying to make
ethanol and related fuels from plants
such as switchgrass, which grows quickly and resists many pests and diseases.
Enzymes, genetically engineered to avoid sticking to the surfaces of biomass
such as corn stalks, may lower costs in the production of cellulose - based biofuels like
ethanol.
Atalla finds that briefly soaking corn stover (the leftover parts of the plant,
such as husks) in a solution of sodium hydroxide,
ethanol, and water changes the molecular structure of the cellulose, allowing him to convert nearly twice
as much of it
as is possible with existing methods.
Biologists know that compared with flies from tropical Africa, flies from temperate regions
such as Europe survive longer when exposed to
ethanol vapors of high concentrations, and they know it has something to do with enzymes on the flies» second chromosomes, which break down alcohol and are more active in European flies.
In addition to being unusual architectures, these materials are stimuli - responsive: the DNA strands that hold them together change in length when exposed to new environments,
such as solutions of
ethanol that vary in concentration.