Which of the following is NOT a solid waste?

Which of the following is NOT a solid waste?

• A. Waste used as an ingredient
• B. Waste burned for energy recovery
• C. Material used to produce fuel
• D. Dioxin containing wastes

Answer: (B)

The key idea is that solid waste is material discarded that remains in solid form. When waste is burned for energy recovery, it is converted into energy, and the remaining solid material is greatly reduced to ash. The primary product is energy, not a solid waste stream. So that option is not a solid waste. The other options describe materials that are still part of a waste stream or are hazardous wastes, even if they’re repurposed or used as inputs in processes.

The key idea is that solid waste is material discarded that remains in solid form. When waste is burned for energy recovery, it is converted into energy, and the remaining solid material is greatly reduced to ash. The primary product is energy, not a solid waste stream. So that option is not a solid waste.

The other options describe materials that are still part of a waste stream or are hazardous wastes, even if they’re repurposed or used as inputs in processes.