Which of the following methods is used for energy recovery from solid waste?

Incineration is a method of energy recovery from solid waste through the combustion process. When solid waste is incinerated, it is burned at high temperatures, which not only reduces the volume of waste significantly but also generates heat energy. This heat can be captured and converted into electricity or used for heating purposes, which makes incineration an effective way to recover energy from waste materials.

The process also helps to minimize the amount of material that ends up in landfills, thus addressing two environmental concerns: waste management and energy production. Incineration can also reduce certain pollutants when combined with advanced air quality control systems, but its primary feature concerning energy recovery is the conversion of the heat produced during combustion into usable energy.

Recycling primarily focuses on reprocessing materials for reuse and does not directly generate energy from the waste itself. Air quality control involves mitigation of emissions and pollutants from processes like incineration, but it does not pertain to energy recovery. Collection refers to the process of gathering waste materials for disposal or processing, lacking any energy recovery function.