What is the difference between incineration with energy recovery and landfill disposal regarding waste management?

What is the difference between incineration with energy recovery and landfill disposal regarding waste management?

• A. Incineration increases waste volume and has no emissions.
• B. Incineration reduces waste volume and can generate energy; landfills store waste and risk methane emissions and leachate, with long-term monitoring.
• C. Landfills run cleaner than incineration.
• D. Both options are equal in environmental impact.

Answer: (B)

The main idea here is how waste treatment methods differ in what they do to volume, energy use, and long‑term environmental impact. Incineration with energy recovery burns waste, so the overall volume drops dramatically and the process can generate electricity or heat, offsetting some energy needs. It does produce emissions, which modern plants control with pollution-cleanup systems, and the remaining ash must be disposed of or reused safely.

Landfills, on the other hand, are a long‑term storage method. Waste sits in engineered cells, and as it decomposes in anaerobic conditions, methane—a potent greenhouse gas—can be released. Leachate can threaten groundwater if not properly managed, and landfills require monitoring and maintenance for many years after closure. This combination means there’s less immediate volume reduction and clear long‑term environmental risk.

So the correct answer reflects these differences: incineration reduces waste volume and can generate energy, while landfills store waste and carry methane and leachate risks with long-term monitoring. The other statements mix up volume outcomes, emissions, or overall environmental impact.