Biomass is a renewable source of energy from organic matter such as wood, crop residues, and mustard oil. It can be burned to produce heat or electricity. Burning biomass emits fewer greenhouse gases than fossil fuels but still pollutes the air. It has advantages as a renewable resource but also has limitations around land and resource usage and negative environmental impacts such as increased air pollution, soil erosion, and deforestation if not managed properly.

1. Biomass
a new source of energy
• What is biomass energy?
• Which biomass energy source are the most
famous for using and under research?
• How does it work?
• What is the advantages and the
disadvantages of biomass energy?
• What is the limitations of biomass energy?
• How is it affecting the environment
negatively?

2. What is the use of
biomass energy?
• For producing heatFor producing heat
energyenergy
• Anything from the
nature which can burn
to heat.
• E.g. charcoal, wood,
Mustard oil
• For producingFor producing
electricityelectricity
• Using method is same
as oil. Burn it and get
energy either for a
state or a house.
• E.g. wood, crop
residues, Mustard oil

3. The various and famous
examples for biomass
• Crop residues : burn it
in incinerator to
produce energy.
• Burning woods :
burning woods in
order to produce
electricity or heat
energy.
• Mustard oil : used like
oil for electricity or
diesel

4. How does it work? (1)How does it work? (1)
• CROP RESIDUES
-burn in the
incinerator and
produce electricity.
• It produces 10% of
electricity of Hawaii
and Brazil.
• WOOD - burn as feul
to either produce
energy or heat.
• Wood-fired power
plants provide 23% of
the electricity used in
Maine.

5. How does it work? (2)How does it work? (2)
• MUSTARD OIL - burn in the engine as
diesel for vehicle or in power plant to
produce electricity.
• It is under research.

6. The advantages forThe advantages for
biomass energybiomass energy
• Most of them are renewable, e.g., wood,
mustard oil and crop residues.
• Solve energy crisis in the future.
• Some of them are re-using the waste,
e.g.,crop residues, sewage.
• High energy efficiency.
• Generally it does not polluted the
atmosphere as much as oil and coal.

7. The disadvantages of
the using of biomass energy (1)
• More serious air pollution was found when
burning plants matters, e.g., CO2, CO, solid
particulate matter.
• Emission more carcinogens into the air.
• Emission some toxic gases and ash.

8. The disadvantages of
the using of biomas energy (2)
• It takes too much energy to collect, dry and
transport the residues to power plants.
• Reduce soil nutrient replenishment.
• The source of biomass can use fertilize soil,
e.g., crop residues and animal manure.
Cutting too many woods is a kind of
deforestation can cause, soil erosion and
natural disasters

9. The disadvantages of
the using of biomas energy (3)
• Raising the price of food, wood and wood
products indirectly.
• May cause accident.
• It uses large area to grow biomass.

10. The limitations forThe limitations for
using biomass energyusing biomass energy
• Either high technological level or catalytic
combustion is needed.
• Large area is needed to grow plants for
biomass energy use.
• When producing biomass fuel, large amount
of waste will also produced.

11. The environmental problems
are caused by biomass energy
(1)
• It will intensify air
pollution.
• It may cause
saltilization and
decrease to total size
of the arable land.

12. The environmental problems
are caused by biomass energy
(2)
• The source of biomass
can use fertilize soil,
e.g., crop residues and
animal manure.
• Cutting too many
woods is a kind of
deforestation can
cause, soil erosion and
natural disasters