The main parameter of any combustible matter is its calorific value. Not all waste is suitable for combustion. The waste may be too humid or of low calorific value due to the low concentration of organic fractions. The calorific value for incinerated waste should not fall lower than 6.5
MJ•kg-1 [13]; otherwise, additional fuel is necessary to maintain efficient combustion.
Calculations of calorific values were performed accord- ing to the elemental composition of waste fractions [14]. It was assumed that the fraction of plastics and composites is composed of plastics, packaging composites, and other composites; biodegradable fraction is composed of kitchen and garden wastes; other combustible fraction is composed of textiles, diapers, wood, and leather. The calculated calorific values of various waste fractions are presented in Table 9.