RE: Academic View of Waste to Gas9 Oct 2019 18:56
The argument in this article may be somewhat meaningful as applied to the pyrolysis system, but it is not wholly applicable to the the DMG gasification process:
1. It is just not the case that "more energy has to be put in to treat the waste than can actually be recovered." I believe that the DMG system uses about 15% of the energy to keep the process going, meaning that 85% of the energy is available to create the syngas.
2. "All pyrolysis EfW or ‘plastic to fuels’ products must be combusted to liberate energy, thus releasing the same quantity of carbon dioxide than if the plastic had been incinerated directly." It is true that if the syngas is used as a fuel in a genset to generate electricity, then some CO2 will be released, but not to the extent that it would be released by incineration.
3. "heavy metals and dioxins become concentrated in the resulting products making then unsuitable as fuels, because when combusted they are released to the environment." This statement simply doesn't apply to the DMG system, as far as I am aware.