acti­vated carbon acti­va­tion agri­cul­ture Approval Asso­cia­tion biochar biomass carbon cycle carbo­niz­a­tion carbon sink CCS circular economy climate protec­tion Co-Act CO2 CO2-nega­tive EBC EBI emis­sions Envi­ron­mental Engineering EU ferti­lizer food green carbon green waste IE Expo IFAT manure NET Organic Farming Phos­pho­rous recycling PyCCS PYREG A500 pyro­lysis Re-Direct recy­cling technology regional biomass rese­arch project RWM Sewage sludge sustaina­bi­lity Tech­nical Univer­sity of Bingen Tech­no­logy Solutions Upcy­cling Waste