this presentation is based on bio gas production and there production process,how to obtain a product?,and advantages and disadvantages.

1. BIOGAS PRODUCTION
Presented by,
K.K.V.Amrutha,116011101235,
Final yr Biotech,
PMIST,Vallam

2. INTRODUCTION
• Biogas is a clean and efficient fuel.
• Biogas typically refers to a gas produced by the breakdown of organic
matter in the absence of oxygen.
• It is a renewable energy source, like solar and wind energy.
• Can also be produced by different raw material like sugarcane residue
and maize silage.

3. Constituents of BIOGAS

5. PRODUCTION OF BIOGAS
There are two types biogas plants used for production of biogas
• The fixed-dome type biogas plant
• Floating gas holder type of biogas plant

6. FIXED DOME BIOGAS PLANT
• The various forms of biomass are mixed
with an equal quantity of water in the
mixing tank. the forms the slurry.
• The slurry is fed into the digester through
the inlet chamber.
• When the digester is partially filled with
the slurry, the introduction of slurry is
stopped and the plant is left unused for
about two months.
• During these two months anaerobic
bacteria present in the slurry decompose
or ferments the biomass in the presence
of water.
• As a result anaerobic fermentation, biogas
is formed, which starts collecting in the
dome of the digester.

7. FLOATING DOME
• Floating drum plants consist of an
underground digester and a moving
gas-holder.
• The gas-holder floats either directly
on the fermentation slurry or in a
water jacket of its own
• The gas is collected in the gas drum,
which rises or moves down, according
to the amount of gas stored.

8. Processing of biogas
• The scrubbing of the biogas in order to remove impurities that are are generated
during the digestion process such as CO2 and h2s
• Biogas go through a cleaning process, becomes biomethane.
• A simple method for hydrogen sulphide utilizing steel wool in a glass bottle.
• For carbon di oxide removal as well as additional hydrogen removal method of
water spray crossflow can be used.in this method the biogas enters one ends of a
tube and experience water streams flowing in the opposite direction

9. BENEFITS OF BIOGAS
• Renewable source of energy
• Non polluting
• Control pollution
• economical technology
• Reduce landfills

10. Limitations
• Contains impurities.
• Biogas leaks smells like rotten eggs.
• Biogas can be explosive when one part of biogas to 8-20 parts of air.
• Not feasible
• Not attractive on large scale.