carbon recycling, biofuels, coppiced woodland

1. TO LEARN
1.CARBON CYCLE
2.BIOFUELS -
I) SOURCES
II) ADVANTAGES & DISADVANTAGES
3. ALTERNATE SOURCE OF ENERGY –
4.REFORESTATION
5. A COPPICED WOODLAND
CARBON CYCLE &
BIOFUELS

4. BIOFUELS
 BIOGAS ( methane )
FIREWOOD , COCONUT
HUSK , COWDUNG ,
HAY
ADV : DOES NOT
CONTRIBUTE TO ACID
RAIN , CLEAN FUEL –
NO SOOT , SLUDGE –
USED AS FERTILIZER
DISADV : LOTS OF
SPACE , LARGE LAND
 GASOHOL( mixture of
80% petroleum spirit &
20% ethanol )
 SUGARCANE , MAIZE ,
 ADV : cleaner fuel ,
helps to sustain fossil
fuels
Reduces GW
 DISADV : uneconomical
, monoculture of
sugarcane – increases

6. BIOFUELS
 Recycle CO2 in short
periods of time –
carbon neutral
 Combustion of fossil
fuels release CO2 that
was removed .- carbon
positive fuels
 Carbon gets
accumulated until
more forests are
planted