Comparison of Sludge Treatment by Gasification vs Incineration

"Gasification offers significant advantages over incineration, yielding a combustible gaseous product and a solid char product. Gasification has also defined advantages over incineration in terms of the emissions of dioxins, furans, mercury, NOx, N2O, and CO.”
"On the other hand, gasification is a thermal application that offers advantages over incineration. The importance of gasification is the syngas produced that could replace natural gas in the generation of electricity. Cost studies have shown gasification is one of the thermal applications that less consume energy, although, an energy input is necessary to start the process. In addition it has been shown that emissions of dioxins, furans, mercury and other heavy metals, NOx, N2O, and CO are reduced significantly.”

http://www.laccei.org/LACCEI2011-Medellin/StudentPapers/PM022_Fericelli_SP.pdf