Which elements are considered the main combustible chemical components in municipal solid waste (MSW)?

• A. Oxygen, Nitrogen, Carbon
• B. Carbon, Hydrogen, Sulfur
• C. Hydrogen, Nitrogen, Phosphorus
• D. Carbon, Oxygen, Chlorine

Answer: (B)

The main combustible chemical components in municipal solid waste (MSW) are primarily associated with organic materials, which typically consist of carbon and hydrogen. These elements play a critical role in combustion processes, with carbon serving as a primary fuel component and hydrogen contributing to the energy released during combustion.

Sulfur is also included in this group because it can be present in various organic compounds and can contribute to combustion but is not a primary fuel source in the same way that carbon and hydrogen are. The presence of these elements allows for effective combustion, releasing energy while also yielding byproducts such as carbon dioxide and water vapor when combusted completely. This makes options that include other elements like oxygen, nitrogen, phosphorus, or chlorine less relevant when specifically identifying the combustible components essential for the energy generation from MSW.