**5.1. Incineration**

Combustion of wastes materials to achieve waste to energy is called incineration. High-temperature thermal treatment converts wastes into ash, flue gas, and heat. It requires localized combined heat and power facilities to encourage its heating process. Japan, Denmark, Singapore, and Netherlands follow this technique usually to dispose the wastes [40]. This method can reduce wastes up to 90%; but this is one type of waste reduction process rather than the disposal process as it is associated with the fire disaster and production of greenhouse gases [41]. Energy produced as coal could save about 2.26 MT of CO2 eq/year [42].
