acti­vated carbon acti­va­tion biochar biomass Birmingham carbon cycle carbo­niz­a­tion carbon sink CCS circular economy climate change climate protec­tion CO2 CO2-nega­tive Cornell EBC EBC seal EBI emis­sions Envi­ron­mental Engineering Fach­ver­band Pflanzenkohle fair ferti­lizer food green carbon green waste industry stan­dard miti­gate NET Organic Farming PyCCS PYREG A500 pyro­lysis Recy­cling recy­cling technology regional biomass rese­arch project resource RWM soil carbon storage sustaina­bi­lity Tech­no­logy Solutions Upcy­cling Waste Waste manage­ment