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Table 4 Environmental impacts of systems without resources recovery

From: Life cycle analysis of potential municipal solid wastes management scenarios in Tanzania: the case of Arusha City

Category Unit SN-1 (RCL_LF) SN-2 (RCL_CP_LF) SN-3 (RCL_AD_LF)
Value Process Value Process Value Process
Fresh water eutrophication kg P eq 4.5 Nutrients (99%) 6.4 × 10 −4 Phosphate (81%) 1.7 × 10 −3 Electricity (64%)
     Diesel (18%)   Phosphate (28%)
Human toxicity kg1,4-DCB eq 10.9 LF of papers (69%) 10.5 LF of papers (71%) 11.2 LF of papers (67%)
   LF of plastics (21%)   LF of plastics (22%)   LF of plastics (21%)
Particulate matter formation kg PM10 0.05 Diesel (80%) 0.44 NH3 (93%) 0.28 NH3 (82%).
Fresh water ecotoxicity kg 1,4-DCB eq 0.86 LF of papers (46.5%) 0.83 LF of papers (48%) 0.86 LF of papers (46%)
   LF of plastics (43.0%)   LF of plastics (45%)   LF of plastics (43%)
Climate change kg CO2 eq 1305 CH4 emission (94%) 91 CH4 emission (93%) 274 CH4 emission (97%)
Terrestrial ecotoxicity kg 1,4-DCB eq 1.1 × 10 −3 Diesel 35%) 8.7 × 10 −4 Transport (36%) 8.9 × 10 −4 Transport (35%)
   Transport (27%)
LF of plastics (24%)
  LF of plastics (32%)   LF of plastics (31%)
Photochemical oxidant formation kg NMVOC eq 0.74 CH4 (76%) 0.14 Diesel (28.5%) 0.3 NO2 (43%)
   Diesel (18%)   NO2 (28.5%)   CH4 emission (40%)
     CH4 emission (21.4%)   Diesel (10%)
Terrestrial acidification kg SO2 eq 0.11 Diesel (64%) 3.18 NH3 emission (98%) 1.86 NH3 emission (94%)
  1. SN Scenario, RCL Recycling, LF Landfilling, CP Composting, AD Anaerobic digestion, DCB Dichlorobenzene, NMVOC Non-methane volatile organic compounds