I am working on quantification of Short-lived Climate Pollutants (SLCPs) and GHGs from waste sector in life cycle assessment perspective. The main SLCPs include black carbon (BC), methane (CH4) in waste sector. Compost production from waste would contribute for emissions reductions that would otherwise occur in chemical fertilizer production. For this purpose, can anyone suggest me Black Carbon(BC) emission factors for chemical fertilizer production?