How do landfills differ from incineration?

How do landfills differ from incineration?

• A. Incineration burns waste
• B. Landfills store waste; incineration burns waste
• C. Landfills recycle waste
• D. Incineration melts waste into glass

Answer: (B)

The main difference is what happens to the waste. Landfills store waste by burying it in engineered cells with liners and systems to manage leachate and gas, aiming to contain contaminants over time. Incineration, by contrast, burns waste at high temperatures to reduce its volume and often recover energy in the form of heat or electricity. This contrast between storing waste versus burning it is why the statement “Landfills store waste; incineration burns waste” best captures how the two methods differ. For context, incineration can produce emissions that require control technologies, and landfills can generate landfill gas (like methane) that may be captured for energy, but neither option implies the other’s primary action. The other statements—such as landfills recycling, incineration melting waste into glass, or only noting that incineration burns waste—don’t reflect the fundamental contrast between storing versus burning.

The main difference is what happens to the waste. Landfills store waste by burying it in engineered cells with liners and systems to manage leachate and gas, aiming to contain contaminants over time. Incineration, by contrast, burns waste at high temperatures to reduce its volume and often recover energy in the form of heat or electricity. This contrast between storing waste versus burning it is why the statement “Landfills store waste; incineration burns waste” best captures how the two methods differ.

For context, incineration can produce emissions that require control technologies, and landfills can generate landfill gas (like methane) that may be captured for energy, but neither option implies the other’s primary action. The other statements—such as landfills recycling, incineration melting waste into glass, or only noting that incineration burns waste—don’t reflect the fundamental contrast between storing versus burning.