When the organic matter present in a sanitary landfill decomposes, it primarily generates methane gas (CH4). This process occurs under anaerobic conditions, meaning in the absence of oxygen. Along with methane, carbon dioxide (CO2) and small amounts of other gases such as nitrogen, hydrogen sulfide, and volatile organic compounds may also be produced. Additionally, leachate, a liquid containing harmful compounds, can be generated during the decomposition process. The methane gas produced is a potent greenhouse gas, contributing significantly to climate change, with a global warming potential much higher than carbon dioxide. This anaerobic decomposition is a critical environmental concern associated with landfills. In summary:
- Methane is the main gas generated.
- Carbon dioxide and other gases are also produced.
- Leachate, a toxic liquid, can be produced.
- The process is anaerobic decomposition of organic matter.
This reflects the typical decomposition process in sanitary landfills and its environmental implications.
