1. BIOGAS By Jenni, Tinh, Ly and Chau

2. Introduction To Biofuel Biofuels are fuels that have been developed from other materials such as plant matter and animal waste matter. Derived from biological carbon fixation Reduced carbon footprint and renewable Important for domestic energy security, Australia currently imports half of its liquid fuel needs and needs its own source of energy supplies Biofuels have been used to replace carbon-based fossil fuels due the effect of pollution to the atmosphere and global warming

3. Introduction To Biogas ‘swamp gas’ or ‘marsh gas’ Produced when animal waste or other organic material rots in the absence of oxygen Can be produced on a large scale

4. Properties Combustible fuel Contains up to 80% methane Mainly consists of CH4,CO2 and H2S

5. How it is made Animal waste or other organic material rots in the absence oxygen Mostly commonly produced via livestock manure Also can be made from biogas digester

6. Impacts Biogas production can reduce the pollution potential in waste water by converting oxygen demanding organic matter that could cause low oxygen levels in the surface waters It has the advantage over wood because it uses less labour to attain the wood and minimises deforestation

7. Usage Can be used as an energy source; generating electricity,light, heat motion and fuel Can be used directly for cooking heating lighting absorption refrigeration Compressed biogas can be used as fuel for vehicles