The moisture content of thesewastes is about 70 % and heating value of around 6x106 J/Kg. Rubbish, the another type of solid waste consists of
25% of moisture and 15x106 J/kg of heating value. The examples of rubbish wastes are paper, rubber, leather,
metals, glass, ceramics etc. Dead animals and human wastes are called pathogenic waste containing 85 % of
moisture and 2.5x106 J/Kg heating value. Refuse is very heterogeneous in composition and the geographical,
temporal, and seasonal variations in its composition make it difficult to define a typical refuse. The solid refuse
generated in urban areas contains particles of various sizes and types and consists of dust, vegetable leaves, waste
paper, large paper board cartons, glass bottles, worn out tyres and night soil.