Compiled from NBB
What is Biodiesel?
Biodiesel is the name for a variety of ester-based oxygenated fuels made from
hemp oil, other vegetable oils or animal fats. The concept of using
vegetable oil as an engine fuel dates back to 1895 when Dr. Rudolf Diesel developed the
first diesel engine to run on vegetable oil. Diesel demonstrated his engine at
the World Exhibition in Paris in 1900 using peanut oil as fuel.
Properties of Biodiesel:
Today's diesel engines require a clean-burning, stable fuel that performs well
under a variety of operating conditions. Biodiesel is the only alternative fuel
that can be used directly in any existing, unmodified diesel engine. Because it
has similar properties to petroleum diesel fuel, biodiesel can be blended in any
ratio with petroleum diesel fuel. Many federal and state fleet vehicles are
already using biodiesel blends in their existing diesel engines.
The low emissions of biodiesel make it an ideal fuel for use in marine areas,
national parks and forests, and heavily polluted cities. Biodiesel has many
advantages as a transport fuel. For example, biodiesel can be produced from
domestically grown oilseed plants such as hemp. Producing biodiesel from
hemp and other domestic crops reduces the United States' dependence on
foreign petroleum, increases agricultural revenue, and creates jobs.
Advantages of Biodiesel:
- Biodiesel is the only alternative fuel in the US to complete EPA Tier I Health
Effects Testing under section 211(b) of the Clean Air Act, which provide the most
thorough inventory of environmental and human health effects attributes that
current technology will allow.
- Biodiesel is the only alternative fuel that runs in any conventional,
unmodified diesel engine. It can be stored anywhere that petroleum diesel fuel is
- Biodiesel can be used alone or mixed in any ratio with petroleum diesel fuel.
The most common blend is a mix of 20% biodiesel with 80% petroleum diesel, or
- The lifecycle production and use of biodiesel produces approximately 80% less
carbon dioxide emissions, and almost 100% less sulfur dioxide. Combustion of
biodiesel alone provides over a 90% reduction in total unburned hydrocarbons, and
a 75-90% reduction in aromatic hydrocarbons. Biodiesel further provides
significant reductions in particulates and carbon monoxide than petroleum diesel
fuel. Biodiesel provides a slight increase or decrease in nitrogen oxides
depending on engine family and testing procedures. Based on Ames Mutagenicity
tests, biodiesel provides a 90% reduction in cancer risks.
- Biodiesel is 11% oxygen by weight and contains no sulfur. The use of biodiesel
can extend the life of diesel engines because it is more lubricating than
petroleum diesel fuel, while fuel consumption, auto ignition, power output, and
engine torque are relatively unaffected by biodiesel.
- Biodiesel is safe to handle and transport because it is as biodegradable as
sugar, 10 times less toxic than table salt, and has a high flashpoint of about
300 F compared to petroleum diesel fuel, which has a flash point of 125 F.
- Biodiesel can be made from domestically produced, renewable oilseed crops such
- Biodiesel is a proven fuel with over 30 million successful US road miles, and
over 20 years of use in Europe.
- When burned in a diesel engine, biodiesel replaces the exhaust odor of
petroleum diesel with the pleasant smell of hemp, popcorn or french fries.
- The Congressional Budget Office, Department of Defense, US Department of
Agriculture, and others have determined that biodiesel is the low cost
alternative fuel option for fleets to meet requirements of the Energy Policy Act.
An important factor that is not usually considered when calculating the costs and
benefits of industrial feedstock materials is the macroeconomic effect associated
with domestically produced, renewable energy sources. Economic benefits of a
biodiesel industry in the US would include value added to the feedstock (oilseeds
or animal fats), an increased number of manufacturing jobs, an increased tax base
from plant operations and income taxes, investments in plant and equipment,
improvement of our trade balance, and reductions in health care costs due to
improved air quality and greenhouse gas mitigation.
Biodiesel has positive impacts on the state economy. An Iowa State University
study concluded that three economic benefits would accrue to state from
biodiesel. First, biodiesel expands demand for soybean oil, causing processors to
pay more for soybeans, In addition, soybean farmers near the biodiesel plant
would receive slightly higher prices for soybeans; and third, the presence of a
facility that creates energy from soybeans would add value to the state's
industrial and income base.
Dr. Hayes concluded that, "If the state of Iowa were to mandate the use of a 20
percent biodiesel blend in its state vehicle fleet where feasible, the total
additional cost of this policy would range from $400,000 to $500,000. If it could
be shown that this policy would result in a new five million gallon biodiesel
plant in the state, then the policy would create more new tax revenues than it
would cost and would clearly be in the best interest of the state."
Biodiesel has positive implications for production agriculture. A 1996 economic
study published by the USDA Office of Energy predicted that a modest, sustained
annual market for biodiesel of 100 million gallons in the US would contribute
approximately seven cents to the price of each bushel of soybeans produced in the
US. Based on last years harvested crop, the increase could have resulted in more
than $168 million directly to the use of biodiesel.
Biodiesel has a positive impact on the US balance of trade.A 1998 biodiesel
lifecycle study jointly sponsored by the US Department of Energy and the US
Department of Agriculture concluded that increased use of biodiesel and biodiesel
blended fuels such as B20 would substantially benefit our economy. The report
concluded that national spending to import petroleum sends significant amounts of
dollars out of our domestic economy every year. Biodiesel offers the potential to
shift this spending from foreign imports to domestically produced energy. The
report notes: "With its ability to be used directly in existing diesel engines,
biodiesel offers the immediate potential to reduce our demand for petroleum in
the transportation sector."
Biodiesel contributes jobs to the local economy. Economic work conducted at the
University of Missouri estimated the benefits of producing biodiesel in a
metropolitan region. This study concluded that 100 million gallons of biodiesel
production could generate an estimated $8.34 million increase in personal income
and over 6,000 additional temporary or permanent jobs for the metropolitan