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Another Biofuel Entrant: Rice Straw
And Some Observations About Biofuels in General
Japan plans to spin rice straw into biofuel.
Unlike corn, sugarcane and other biofuel sources that remove the eatable portion from the
food supply, rice straw isn't consumed as food and is often thrown away. (It should be noted
that the ethanol in E85 biofuel so far comes from corn; most of the kernel is still available
for use in traditional products such as animal feed.)
To make the rice straw technology commercially viable, the Japanese government seeks total vertical integration of the process, from rounding up the straw to producing and using the resultant fuel. Maybe the Japanese will also take steps to ensure that all its automaker’s engines can burn the fuel, since not all cars, whether Japanese, American, German, Korean, English, etc., can now use ethanol (E85) or any other biofuel. GM and other US automakers each sell a few so-called flex-fuel models that can run on either straight gasoline or E85.
Any flex-fuel vehicle can use a biofuel. Roughly 5 million such models

have been sold over the past decade. For instance, the Jeep Grand Cherokee became E85 compatible in the 2007 model year. If you were unaware, don’t be dismayed. A recent GM study found that roughly 70% of its flex-fuel vehicle owners didn't know they could use E85, and fewer than 10 percent did so. This contributed to GM's decision to launch its "LiveGreenGoYellow" media blitz. A flex-fuel model can burn any combination of E85 and straight gasoline, so owners can fill up with either fuel at any time. Technically, a non-flex fuel model can be modified to run on E85, but it is far from being cost-effective, according to the website, cars.com.
Will a Biofuel Save You Money?
E85 saves you money only when gasoline prices are high because it produces 72% of the energy as gasoline. Cars.com reports, for

Rarely found: The logo for E85
in the United States.
example, that a flex-fuel Chevrolet Impala
equipped with a 3.5-liter V-6 engine gets an EPA-estimated 23/31 mpg (city/highway) on gasoline and 16/21 mpg when burning E85. The acceleration is pretty much the same, but you'll be filling the tank more often when using E85. Do the math and you'll discover that E85 must be priced roughly 28% less than gas just to break even. For example, if gasoline were $3.25 per gallon, E85 would have to be priced below $2.34 per gallon.
How Available Is Biofuel?
On a national level, E85 is hardly widespread. There are currently 1,441 E85 stations providing this biofuel across the United States. (For a complete listing, go to www.E85Refueling.com.) The highest concentration of filling stations is in corn-growing states such as Illinois, Iowa, Wisconsin, Nebraska and Kansas. Minnesota has the most, with more than 300. Availability is poorest in the South and the Northeast. The number of filling stations offering E85 in the U.S. is expected to double within a year's time.
The Energy bill recently passed by Congress and signed by President Bush provides new impetus for the development and use of biofuels. A substantially increased level of biofuel use is mandated as a requirement on the fuel producing industry. Under current law, they are required to produce 5.4 billion gallons in 2008, increasing to 7.5 by 2012. Under the new law, the 2008 target is raised to 9.0 billion gallons in 2008, and then scales upward to 36 billion gallons by 2022. No one is sure how or whether the industry can meet this immediate surge, but there is a provision for EPA to grant a time waiver if it proves impossible. In each year after 2016, all of the increase must come from what are called “advanced biofuels” derived from feedstock other than cornstarch. Specific emphasis is placed on increasing quantities of cellulosic-based product and on biodiesel.
In the earlier versions of the energy bill, Congress had agreed to cut back tax breaks for the petroleum industry and replace them with greener tax breaks, and that may happen in a later tax bill or in the eventual farm bill. What was included was a strong emphasis on biofuel R & D, including specific provisions for algae-based formulations, as well as support for demonstrations and market research to improve understanding of the production, transportation and use of these products. In a classic example of Congressional earmarking, a special provision was included for a University R & D effort with priority to “…universities in low-income and rural communities with proximity to trees dying of disease or insect infestation.
Seemingly contrary to this effort is the fact that the new CAFÉ standards will phase out the current bonus given for flex-fuel vehicles. However, this is likely a response to the fact that automakers have gotten a significant boost out of the exemption without it creating any major incentive to actually use the flex-fuel capacity. If biofuel mixes become more available, as called for, it will create a marketing imperative for the automakers to provide this relatively low cost modification to their vehicles.
Biofuel Benefit?
The best reasons to buy an E85 vehicle are to decrease U.S. dependence on petroleum — which is non-renewable and comes mainly from foreign countries — and to keep more of your money in this country. E85 also has environmental benefits, although the degree is in question, Cars.com states. A flex-fuel car burning E85 has different levels of tailpipe pollutants, but it's not dramatically better overall than gasoline exhaust. Separate from true pollution emissions, E85's output of carbon dioxide — a greenhouse gas — is again comparable to that of gasoline, at the car's tailpipe. The theoretical benefit is that the carbon in ethanol comes from corn plants, which, in a sense, recycle the carbon.
In comparison, petroleum is carbon that was trapped underground for millions of years before being released into the ecosystem. The National Ethanol Vehicle Coalition says E85 reduces CO2 by about 36 to 42 percent versus gas. Still, scientists point out that petroleum is used to plant, fertilize, harvest, process and transport E85.
When it comes to biofuels, the advantages are these:
- Renewable fuel
- Uses up to 85 percent less imported petroleum
- Less money goes overseas
- You don't have to pay a premium for a flex-fuel model
There are disadvantages to biofuels, however:
- - Get fewer miles per gallon than regular gas
- - Environmental benefits unclear
Right now, ethanol alcohol, in the form of E85 (85% ethanol, 15% gasoline) is the biofuel most often seen in the U.S. The gasoline ensures that the engine starts in cold weather, because straight alcohol won't.
What About Prices for Biofuels?
Ethanol prices are already subsidized in some states. Buyers in Illinois pay no sales tax, which brings down the posted price per gallon (tax is included in per-gallon prices for straight gasoline, not added on top of the total). Price hinges on supply and demand and economies of scale. Demand recently jumped when the additive MTBE was found to be polluting groundwater. States that used MTBE are switching to ethanol as an octane booster and oxygenate, which reduces summertime air pollution from gasoline evaporation. Ethanol proponents say an oft-cited study that claimed ethanol takes more energy to produce than it gives back is no longer accurate. According to NEVC, the overall energy advantage over gasoline is 3 to 1. This ratio is expected to reach 9 to 1 when the industry moves away from food crops and toward waste vegetation (e.g., rice straw, switchgrass, and others) and/or plants that are simpler and cheaper to grow, harvest and process. As alternative fuels go, biofuels like ethanol and biodiesel have great advantages in the real world. They can be distributed and dispensed like conventional liquid fuel, and used in vehicles that cost automakers very little in terms of additional cost. The same cannot be said of hybrids, which force consumers to pay a higher sticker price.
KCM, with contributions from MLD
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