Last week the EPA dismissed a petition by the American Petroleum Institute seeking relief from the cellulosic ethanol mandate, which requires that oil refiners blend 8.65 million gallons
of ethanol into the fuel supply by the end of 2012:
As a result, the government of that country has decided to mandate blending 1 percent
of ethanol into gasoline for the first time.
Congress in 2007 required that refiners blend 36 billion gallons
of ethanol into fuel supply by 2022.
Then, Dextre reached into the module, grabbed one of four toaster - size, custom - made, high - tech tools there, and proceeded to snip two safety wires, unscrew two filler caps on the outside of the module and pump a few liters
of ethanol into a small holding tank.
Not exact matches
With the help
of government subsidies, companies are investing in converting wood fibre (known as biomass)
into ethanol and diesel.
The endless fields
of corn and soybeans blur
into the expanses
of the American Middle West, fly - over country, where
ethanol plants and windmill farms have sprouted in recent years but nothing much makes the national news.
Ethanol from alcoholic drinks can move quickly
into breast milk from the mother's bloodstream within an hour
of ingestion.
New machinery developed by Biorefining Inc. in Minnesota precisely breaks kernels
into their constituent elements, which may convert more
of the starch
into ethanol at a lower cost, while also freeing up more
of the valuable coproducts like corn oil.
These can be burned in a turbine, but in the presence
of the right catalyst, they will instead combine
into ethanol.
Finally, the
ethanol — 2.7 gallons from a bushel
of corn — is cooled
into a liquid and denatured with gasoline.
7 So much for recycling: Burials in America deposit 827,060 gallons
of embalming fluid — formaldehyde, methanol, and
ethanol —
into the soil each year.
An even bigger blow has been the U.S. decision to subsidize conversion
of maize
into ethanol to blend with gasoline.
This wrong - headed policy, pushed by an aggressive farm lobby, gives a 51 - cent tax credit for each gallon
of ethanol blended
into gasoline.
(Worse, use
of ethanol instead
of gasoline does little to reduce net carbon emissions once the energy - intensive full cycle
of ethanol production — including the energy - intensive fertilizer and transport needs — is taken
into account.)
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.
She and her colleagues at Helios, a joint project
of U.C. Berkeley and Lawrence Berkeley National Laboratory, want to build an artificial leaf that drips
ethanol, or some other alcohol, which you could pump right
into your gas tank.
Currently more than 40 per cent
of the US corn crop goes
into producing
ethanol, which is mostly mixed with gasoline to fuel conventional cars.
Ethanol is such a small, simple molecule — just two carbon atoms, six hydrogens, and a spare oxygen — that it pours directly out
of the stomach and small intestine
into the bloodstream.
A gadget built around an automotive fuel injector transforms
ethanol, or grain alcohol,
into hydrogen gas, a team
of chemical engineers reports in this week's issue
of Science.
Each day the facility would convert 1,000 tons
of wood chips and waste from Georgia's vast pulp and paper industry
into 274,000 gallons
of ethanol.
This problem can become even bigger for biofuels like corn
ethanol that emit greenhouse gases at every step, from laughing gas emanating from corn fields after fertilization to the CO2 from the fermentation
of kernels
into ethanol.
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.
Together the two plants would produce, at best, 22 million gallons
of ethanol a year by using sulfuric acid to break the lignocellulose bonds and then burning the leftover lignin to power fermentation
of the cellulose
into ethanol.
They then dipped lengths
of electric cable
into solutions
of the chemicals dissolved in
ethanol, and checked whether caged mice gnawed these as much as they did cable dipped in
ethanol alone.
The platform, which uses microbes to glean
ethanol from glycerol and has the added benefit
of cleaning up the wastewater, will allow producers to reincorporate the
ethanol and the water
into the fuel - making process, said Gemma Reguera, MSU microbiologist and one
of the co-authors.
BlueFire has already operated such a plant to convert wood waste
into ethanol in Japan to demonstrate the feasibility
of the technology.
But the U.S. Environmental Protection Agency (and the California Air Resources Board) have noted that turning corn
into ethanol can actually be a significant source
of greenhouse gas emissions and other unintended environmental effects, largely by driving the expansion
of agriculture and its attendant pollution — as evidenced by previous studies published in Science.
«One
of our tasks is to determine the exact sequence
of steps for breaking apart water and CO2
into atoms and piecing them back together to form
ethanol and oxygen,» says William Goddard (PhD» 65), the Charles and Mary Ferkel Professor
of Chemistry, Materials Science, and Applied Physics, who led the Caltech team.
The corn and
ethanol industries already get federal help, before carbon capture money from the Department
of Energy comes
into play, he said.
Turning the food crop
into ethanol would not be the best use
of the energy embedded in the kernels» carbohydrates, according to a new study in Science.
Corn - based
ethanol doesn't meet that test and won't benefit from the new standard, CARB says, because diverting corn
into ethanol production increases deforestation and the clearing
of grasslands.
«The blend - stock can be mixed
into gasoline at higher concentrations than
ethanol's current limit
of 10 percent; plus it can be added to diesel and jet fuel.
Preliminary ORNL analysis in collaboration with the National Renewable Energy Laboratory in Colorado shows the catalytic technology could be retrofitted
into existing bio-alcohol refineries at various stages
of ethanol purification.
Scientists from the University
of Bristol's School
of Chemistry have been working for several years to develop technology that will convert widely - available
ethanol into butanol.
The rest can still be fed
into the corn supply chain to make
ethanol or grits or any
of the other products corn is already used for.
Scientists have experimented for decades with a class
of catalysts known as zeolites that transform alcohols such as
ethanol into higher - grade hydrocarbons.
Previous studies on switchgrass plots suggested that
ethanol made from the plant would yield anywhere from 343 % to 700 %
of the energy put
into growing the crop and processing it
into biofuel.
After crunching the numbers, Vogel and his colleagues found that
ethanol produced from switchgrass yields 540 %
of the energy used to grow, harvest, and process it
into ethanol.
The enzymes convert
ethanol into vinegar, generating a stream
of electricity.
The conversion and commercialization
of cellulose inputs
into fuel
ethanol is a significant technology obstacle to the growth
of the
ethanol industry as a mainstream fuel.
The researchers conducted more than 60 experiments in which about 3.5 ounces
of saline or
ethanol solutions representing the planetary projectile that hit Earth was dropped
into a rectangular tank holding about six gallons
of fluid representing the early Earth.
A key issue is the conversion
of existing corn
ethanol and sugarcane
ethanol facilities
into integrated cellulose / starch / sugar production facilities.
Monroe Energy, a subsidiary
of Delta Air Lines that operates the Trainer refinery complex in Pennsylvania, said the EPA's decision not to cut 2013 biofuel targets did not take
into account that companies might need to carry over some
ethanol credits for use in 2014, when it finalized the 2013 targets.
In the last few years, some refineries began converting the inedible parts
of corn plants
into ethanol, Chundawat said.
Indeed, biofuels aren't really a stretch — humans have been using microorganisms to ferment plants
into ethanol ever since Stone Age people began making beer around 10,000 B.C. Today's work hinges on engineering a perfect microbe that will eat the entirety
of a plant, retain only a little
of this food for itself and spew out the rest as a high - energy fuel.
This is
ethanol country, the center
of the national push to turn carbohydrates
into hydrocarbons.
These findings, which reported in the Neural Regeneration Research, propose new insights
into the mechanisms underlying the role
of ethanol exposure in central nervous system injuries, and provide a new strategy for treating the consequences
of prenatal
ethanol exposure.
When it comes to using plant waste to mitigate climate change, most people think
of turning it
into ethanol or biodiesel for use as a fuel.
So the pathways that spring
into action to increase membrane fluidity in cold flies also appear to contribute to increased
ethanol tolerance, says Montooth, whose team reports its results today in the Journal
of Experimental Biology.
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.