UPSC » Daily News Analysis ‘Waste-to-Energy (WtE) Technology’ : 2 February

Daily News Analysis ‘Waste-to-Energy (WtE) Technology’ : 2 February

Why in News: 

  • The focus on Waste-to-Energy technology has intensified under the new Solid Waste Management Rules 2026 to reduce landfill dependency and manage non-recyclable waste effectively.
Key Features, Methods, and Status
  • Definition: WtE is a technology that converts non-recyclable waste materials into usable forms of energy, primarily heat or electricity.
  • Key Methods:
    • Incineration: The most common method where trash is burned at high temperatures to boil water; the resulting steam turns turbines to generate power.
    • Gasification: Uses high heat with little oxygen to convert waste into combustible gas.
    • Anaerobic Digestion: Uses bacteria to break down organic waste in the absence of oxygen to produce biogas.
  • Benefits:
    • Volume Reduction: Can reduce waste volume by nearly 90%, significantly extending the lifespan of landfills.
    • Emission Control: Prevents the release of Methane (a potent greenhouse gas) that otherwise generates from decomposing organic waste in landfills.
  • Drawbacks & Concerns:
    • Pollution: Burning waste releases Carbon Dioxide. Poorly controlled plants can emit toxins like dioxins, furans, and heavy metals (though modern scrubbers mitigate this).
    • Recycling Conflict: Critics argue it may discourage sustainable habits like recycling and composting by creating a constant demand for waste fuel.
  • Status in India:
    • Currently, there are 21 WtE plants and 133 biogas facilities operational.
    • Solid Waste Management Rules 2026: These rules mandate strict waste segregation and encourage the use of Refuse-Derived Fuel (RDF) to minimize the burden on landfills.