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Calorific values of wastes

A material is auto burning from 10 - 12 GJ per tonne. Here you may find the values of the most frequent wastes and renewable sources. 

Wastes and renewable sources

  net (GJ per tonne) gross (GJ per tonne)
Domestic wood 12,3 13,9
Industrial wood 12,1 13,7
Straw 12,8 15,0
Poultry litter 7,4 8,8
Meat and bone 15,6 18,6
General industrial waste 15,2 16,0
Hospital waste 13,3 14,4
Municipal solid waste 6,7 9,5
Refuse derived waste 13,0 18,5
Short rotation coppice 9,3 11,1
Tyres .. 32

Example: medical waste

A mix of different materials defines the final cv of the waste. Composition of clinical waste determined at one of the clinical waste incinerator plant operating in Malaysia (Source: Jurnal Teknologi, 49(F) Dis. 2008: 455–465, Universiti Teknologi Malaysia)

Material Weight percentage
Plastic 38
Paper 10
Surgery dress 3
Diapers 18
Absorbents 18
Gloves 13
Total 100


General industrial waste
General industrial waste
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Note:
There exist a net and a gross calorific value. The net CV is the calorific value of the waste just like it is. The gross CV, is the calorific value of the dry substance. We always use the net CV for incineration design.


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