Biosolids management practices are evaluated based on environmental, economic and social impacts. A consideration of increasing importance is the impact of greenhouse gas (GHG) emissions from biosolids.
In July, 2009, an independent assessment of the GHG impact of a number of biosolids management solutions was undertaken by the federal and provincial governments in Canada. As part of that study, a process that used a version of the Ceres technology was studied. The GHG study concluded that the Ceres technology actually lowered GHG from 0.5 to 1 Tonne of GHG offset for each dry Tonne of biosolids processed.