Which statement is NOT listed as a method of energy recovery in landfills?

Which statement is NOT listed as a method of energy recovery in landfills?

• A. Harnessing the heat from incineration to produce steam or electricity.
• B. Extracting fuel from landfill gas.
• C. Converting solid waste into liquid or gaseous fuels by chemical, thermal or biological processes.
• D. Recycling plastics into consumer products.

Answer: (D)

The idea being tested is how energy recovery from waste is defined in landfill contexts. Energy recovery means turning waste or its byproducts into usable energy, not just reclaiming materials. In landfills, you see energy recovery through capturing landfill gas and using it for energy, using heat from waste-to-energy incineration to produce steam or electricity, or converting waste into fuels via chemical, thermal, or biological processes. Recycling plastics into consumer products, on the other hand, is about material recovery—taking the plastic and reusing it as a new product rather than turning its energy content into usable energy. It preserves material value rather than generating energy, so it isn’t an energy-recovery method.

The idea being tested is how energy recovery from waste is defined in landfill contexts. Energy recovery means turning waste or its byproducts into usable energy, not just reclaiming materials. In landfills, you see energy recovery through capturing landfill gas and using it for energy, using heat from waste-to-energy incineration to produce steam or electricity, or converting waste into fuels via chemical, thermal, or biological processes. Recycling plastics into consumer products, on the other hand, is about material recovery—taking the plastic and reusing it as a new product rather than turning its energy content into usable energy. It preserves material value rather than generating energy, so it isn’t an energy-recovery method.