The calorific value
of the dried samples was determined with a bomb calorimeter
according to ASTM D 5468-02. 0.9e1 g of each ground waste
sample in an LECO AC-500 calorimeter was burned and the temperature
change was determined to measure enthalpies of combustion.
The heavy metals were also monitored using an ICP-OES
(PerkineElmer). Prior to analysis, 0.2 g of each samplewas digested