Biogas is a
gas mixture which is generated when organic
compounds like livestock manure is processed
in the absence of air (anaerobic fermentation).
This gas mixture is mainly made of methane
gas.
Manure heap left in the open air could also
produce biogas, because inside the heap
there is no air. But in this case, biogas
will be released into the atmosphere, which
gives a bad effect on global environment
as greenhouse effect gas. Also diffused
form of gas is difficult to collect and
utilize.
Therefore, basic idea of anaerobic process
is to carry out anaerobic fermentation in
airtight container and collect biogas to
harness for power generation. |
 |
