2. WHY RENEWABLE ENERGY?
Increased the demand of energy in developing countries due to fast growing
population, rapid modernization and industrialization.
The reserve will be depleted one day. In addition, the dependency on these
fossil fuels, which are largely been imported, has serious implications on
economy and environment.
Scientist say that up to 2040,all the resources of fossil fuels will be finished.
So for this reason scientist are focus their view on the alternative renewable
energy resource such as solar energy, biogas, biodiesel, wind power, tidal
7. What is Biofuel?
A biofuel is a type of fuel whose energy is
derived from biological carbon fixation.
Fuel which produced from renewable
biological resources such as plant
biomass and treated municipal and
9. Why biofuels?
To reduce our dependence on fossil fuels
To reduce reliance on foreign oil
To lower emissions of greenhouse gases
To bring business to rural economics
11. Advantages of biofuels
There is no emission of hazardous gases
Locally available in every region of the
Friendly with the environment, so they do
not cause global warming
The energy release per unit mass of biofuel
is greater than the energy released from
the unit mass of fossil fuels.
13. Two methods to form biofuel
1. Sugar crops and starch are grown and
through process of fermentation, ethanol
2. Plants are grown naturally to produce oil
like algae. Oils are heated to reduce
viscosity, then directly used as a fuel for
14. Types of Biofuels
• Made from sugar, starch, and vegetable oil.
First generation Biofuel
• Made from non-edible plant materials.
Second generation Biofuel
• Made from algae and microbes.
Third generation Biofuel
Biodiesel is a famous biofuel in Europe
Produced from oils or fats using trans-
esterification after mixing the biomass with
methanol and sodium hydroxide.
methanol and sodium hyrox
Used for car diesel engi
PrProduced after mixing the biomass with methanol and sodium hyroxide
♫ Used for car diesel engines
oduced after mixing the biomass with methanol and sodium hyroxide
♫ Used for car diesel engines
20. Advantages of biodiesel
Biodiesel can be termed clean fuel as it does not
contain carcinogens and its sulphur content is also
lesser than the mineral diesel.
It possesses high biodegradability and lubricating
Improves engine efficiency and operating life cycle.
Readily mixes with petroleum diesel fuel in any ratio
Higher flash point makes it safer in transport and
Greatly reduces particulate matter and carbon
22. Blends of biodiesel
Blends of biodiesel and conventional
hydrocarbon-based diesel are often used
and specified in terms of "B" factor to state
the amount of biodiesel in any fuel mix.
• 100% biodiesel is referred to as B100
• 20% biodiesel, 80% petrodiesel is
• 5% biodiesel, 95% petrodiesel is labeled B5
• 2% biodiesel, 98% petrodiesel is labeled B2
24. Disadvantages of biodiesel
Higher production cost.
The resources like corn,soyabean etc are
extensively used for biodiesel leading to
increase in demand and inturn increasing
the prices of them.
Poor low temperature properties.