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The so-called "third-generation biofuels", similar to second-generation biofuels with an emphasize on the use of algae and cyanobacteria as a source of biofuel feedstocks, have an additional advantage as they take up a relatively small fraction of space when compared to first and second-generation biofuel sources, and may also help to reduce seawater eutrophication.
Given ethanol's discount to gasoline and the current value of RINs, retailers offering mid-level ethanol blends like E15 can quickly recoup their investments in infrastructure. Federal, state and local incentives and grant programs are available in most areas, and would further help reduce the cost of equipment and installation.
Using corn as a feedstock to produce either ethanol or butanol seems infeasible without significant technology improvements regarding yields. Currently, about 2.5 US gallons (9.5 L) of butanol can be produced per bushel of corn (373 l/t). [44] Meanwhile, about 2.75 US gallons (10.4 L) of ethanol can be produced per bushel of corn (410 l/t). [45]
Ford, [2] GM, [3] and Chrysler [4] offer the following vehicles in the US that use E85 (different models are available outside the US, depending on the country). For 2018-2025, all Flex Fuel Vehicles available for sale are listed.
Bioethanol is a form of renewable energy that can be produced from agricultural feedstocks. It can be made from very common crops such as hemp, sugarcane, potato, cassava and corn. There has been considerable debate about how useful bioethanol is in replacing gasoline.
The energy content in the global production of bioethanol and biodiesel is 2.2 and 1.8 EJ per year, respectively. [17] Bioethanol is an alcohol made by fermentation, mostly from carbohydrates produced in sugar or starch crops such as maize, sugarcane, or sweet sorghum.
The corn starch and remaining water can be fermented into ethanol through a similar process as dry milling, dried and sold as modified corn starch, or made into corn syrup. The gluten protein and steeping liquor are dried to make a corn gluten meal that is sold to the livestock industry. The heavy steep water is also sold as a feed ingredient ...
The EPA was still studying if older cars can withstand a 15% ethanol blend. [73] [74] In order to adjust to EPA regulations, 2012 and 2013 model year vehicles manufactured by General Motors can use fuel containing up to 15 percent ethanol, as indicated in the vehicle owners' manuals. However, the carmaker warned that for model year 2011 or ...
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