A biofuels is a type of fuel whose energy is derived
from biological carbon fixation
In other words, Fuel which produced from renewable
biological resources such as plant biomass and treated
municipal and industrial waste.
7. Why Biofuel?
To Reduce our dependence on fossil fuel
To reduce reliance on foreign oil
To lower emissions of greenhouse gases
To bring business to rural economics
8. Why Biofuel? Are They Green?
Use of Biofuels makes the environment clean:
By regulating carbon dioxide rates in the environment
By maintaining carbon cycle
By making a way to reduce global warming
Biodiesel, an alternative diesel fuel, is made from renewable
biological sources such as edible, non-edible, animal fats
and microalgae through a process known as
Biodiesel has almost similar fuel properties of diesel.
Biodiesel can be used as a pure fuel or blended with diesel
in any ratio.
15. Biodiesel Production methods
Four main production methods
Direct use and blending
Most common production method
Uses vegetable oils and animal fats as
The reaction of a fat or oil with an
alcohol to form esters (biodiesel) and
22. Biodiesel can be Used in Existing Diesel Engines
Pure Biodiesel (B100) or blended with petroleum diesel (B20, BXX).
Rudolf Diesel: peanut oil.
Little or no engine modifications
Use existing fuel distribution network.
23. Benefits of Biodiesel
High cetane number (average 45 to 56)
High flash point (above +100)
Good lubricating property
Absence of sulfur and aromatic hydrocarbons
Low toxicity of emissions
Virtually complete biodegradability (99%)
Zero balance of greenhouse gases
24. Problems Brought by Biodiesel
• Certain biodiesel gels easily under cold temperature
• Problem of storage
• Deforestation for plantation
• NOx emission will be high
• Cost is high
Biodiesel is eco-friendly.
Biodiesel is clean burning alternative fuel.
Biodiesel contain no petroleum, but can be blended with conventional
These fuel can be used in any diesel engine without any modification.
Biodiesel is degradable , non toxic and free from sulphur and lead.
27. What is Bioethanol
Bioethanol is an alcohol made by fermentations, mostly from
carbohydrates produced in sugar or starch crops such as corn or
sugarcane. Cellulosic biomass derived from non-food sources such as
tress and grasses, is also being develop as a feedstock's for ethanol
The principle fuel used as a petrol substitute is bioethanol
IT is mainly produced from sugar or cellulose through fermentation
It is a high octane fuel and has replaced lead as an octane
enhancers in petrol
36. Biogas is a renewable energy source that can be used as a fuel or can be used in
a variety of ways for the production of heat and/ or electricity.
Biogas is predominantly a mixture of methane and cabon dioxide and some
traces of other gases (H2, H2S & N2).