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Annexure 1 |
Final destination of waste in Bangalore city
SWM option |
% |
Reuse |
19 |
Recycling |
43 |
Composting |
7 |
Disposal |
31 |
Source: Gerlagh et al., 1999 |
Biogas Composition:
The gas obtained during anaerobic digestion comprises of methane, carbon dioxide, some inert gases and sulfur compounds. Usually 100-200 m 3 of total gas are produced per ton of organic USW digested.
Typical biogas composition:
Methane |
55-70% by vol. |
Carbon dioxide |
30-45% by vol |
Hydrogen sulphide |
200-4000 ppm by vol |
Energy content of gas product |
20-25MJ/standard m3 |
Energy content of CH4 per ton MSW |
167-373MJ/Ton MSW |
Source: Verma, 2002 |