Which technology combusts solid waste first and then performs secondary combustion of the resulting gases?

• A. Remediation
• B. Primary Recycling (Closed-Loop Recycling)
• C. Mass Burn
• D. Bioreactor Landfill

Answer: (C)

Mass Burn incineration is built around a two-stage burning process. Waste is fed into a grate-fired primary chamber where it is burned first, reducing volume and releasing heat. The resulting flue gases then move to a secondary combustion zone, where they are exposed to higher temperatures and sufficient residence time to achieve complete oxidation of the gases and destruction of remaining pollutants. This secondary combustion is essential for minimizing emissions and ensuring efficient energy recovery from the waste.

Other options don’t fit this mechanism: remediation is about cleaning up contamination, primary recycling focuses on recovering materials before disposal, and a bioreactor landfill relies on enhanced decomposition rather than burning.