Regarding the remainder from the separation process, which was referred to as the dry fraction,
incineration was selected as the promising and ultimate technology to treat the dry waste since it can
effectively reduce the volume of the mixed MSW, which has high flexibility for a non-homogeneous
composition. This incineration technology has been commercially used on both small and large scales in
many countries. However, this technology requires energy, normally from fossil fuel, for the combustion
process in order to maintain the desired operating temperature; consequently, there are high operation
costs. Hence, it is suggested that gasification technology be used in combination with incineration
technology to produce producer gas, which can further be supplied in the incineration system as substitute
fuel for fossil fuel. The conceptual design of the overall process for the MSW disposal technology,
focusing on the incineration technology for dry waste, is illustrated in Fig. 2.