Other biofuel feedstock sources, including cellulosic biomass, are promising, but technological barriers make their future uncertain.
And unlike
other biofuel feedstocks, algae production has minimal impact on freshwater supplies — especially when it can be undertaken in ocean waters or even wastewater.
Some experts believe that algae is set to eclipse
all other biofuel feedstocks as the cheapest, easiest, and most environmentally friendly way to produce liquid fuel.
Not exact matches
Indirect land - use change refers to the opportunity lost had the
biofuel feedstock acres been set aside for
other uses.
In fact, since the RFS expanded renewable fuel volumes in 2007, over 1/3 of corn production and nearly 1/4 of the oil produced from soybeans have been diverted to
biofuels.1 As the EPA points out, «because many
biofuel feedstocks require land, water, and
other resources, research suggests that
biofuel production may give rise to several undesirable effects.»
Sugar cane is the most economically attractive agricultural
feedstock for liquid
biofuel, while maize and
other cereal and oilseed crops from the Northern Hemisphere are less competitive under market conditions (Figure 16).
Other research has shown that several common
biofuel feedstocks — including corn and rapeseed which have considerably lower yields than oil palm — also have high emissions from direct and indirect land use.
Renewable diesel fuel (
other): Diesel fuel and diesel fuel blending components produced from renewable sources that are coprocessed with petroleum
feedstocks and meet requirements of advanced
biofuels.
The authors of the letter also say that some potential
biofuel feedstock crops — including switchgrass and miscanthus — are perennials that sequester carbon into soil and thrive on land often not suitable for
other crops.
So, more attention and resources are going into the producing of ethanol and
other biofuel types from second - generation
feedstocks, sometimes known as non-food crops.
Biofuels» Emissions Benefits Often Overstated Citing the study, Reuters reports that, «The OECD said that if Brazil's ethanol produced from sugar cane cuts greenhouse gas emissions by around 80 %,
biofuels from
other feedstocks in the United States, the EU or Canada tend to have a far lower environmental benefit.
There is a wide range in the estimated heat - trapping emissions and
other environmental impacts from each
biofuel over its life cycle (i.e., from farm to finished fuel to use in the vehicle), depending on the
feedstock, production process, and model inputs and assumptions.
Ethanol
Biofuel Feedstocks Gain a New Candidate: Kudzu Kudzu Harvesting for the Production of Ethanol, Redux Ethanol: How the Fuel is Produced, Growing Corn and
Other Feedstocks, and More
(1)
Feedstock other than corn; (2) Decentralized network of small advanced
biofuel manufacturing facilities; (3) Variable blending pumps in lieu of splash blending; and (4) Hydrous ethanol.
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other developing technologies.